From af2f6c98d55a9e497f4ed8e93f6ac8369b1ea34e Mon Sep 17 00:00:00 2001
From: Lionel GUEZ <guez@lmd.ens.fr>
Date: Thu, 17 Jun 2021 23:33:13 +0200
Subject: [PATCH] Rename triplet to collection

Rename triplet to collection, `shp_tr` to shpc, shpt to shpc in
comments, identifiers and file names.
---
 Common/derived_types.f90                      |  4 +--
 Common/read_eddy.f90                          |  4 +--
 Common/read_field_indices.f90                 |  4 +--
 Common/read_snapshot.f90                      |  4 +--
 Common/shp_tr_open.f90                        | 31 -----------------
 Common/{shp_tr_close.f90 => shpc_close.f90}   | 12 +++----
 Common/{shp_tr_create.f90 => shpc_create.f90} | 20 +++++------
 Common/shpc_open.f90                          | 31 +++++++++++++++++
 Common/write_eddy.f90                         |  4 +--
 Convert_Matlab/inst_eddies_HDF5.py            | 16 ++++-----
 Inst_eddies/Analysis/triplet_dump.sh          |  4 +--
 Inst_eddies/CMakeLists.txt                    |  4 +--
 Inst_eddies/Tests/CMakeLists.txt              | 18 +++++-----
 Inst_eddies/Tests/test_get_1_outerm.f90       | 12 +++----
 Inst_eddies/Tests/test_nearby_extr.f90        | 12 +++----
 Inst_eddies/Tests/test_set_all_outerm.f90     | 16 ++++-----
 Inst_eddies/Tests/test_set_max_speed.f90      | 23 ++++++-------
 Inst_eddies/config.f90                        | 14 ++++----
 Inst_eddies/inst_eddies.f90                   | 20 +++++------
 Inst_eddies/write_aux.f90                     |  8 ++---
 Overlap/Analysis/plot_traj.py                 | 12 +++----
 Overlap/Analysis/renumber_interp.py           | 12 +++----
 Overlap/Analysis/report_graph.py              |  8 ++---
 Overlap/Analysis/report_graph_int.py          | 10 +++---
 Overlap/CMakeLists.txt                        |  6 ++--
 Overlap/Tests/CMakeLists.txt                  | 34 +++++++++----------
 Overlap/Tests/test_get_dispatch_snap.f90      | 21 ++++++------
 Overlap/Tests/test_overlap.f90                | 27 +++++++--------
 Overlap/Tests/test_read_eddy.f90              | 18 +++++-----
 Overlap/Tests/test_read_snapshot.f90          | 12 +++----
 Overlap/Tests/test_send_recv.f90              | 14 ++++----
 Overlap/Tests/test_write_overlap.f90          | 12 +++----
 Overlap/Tests/write_snapshot.f90              | 12 +++----
 Overlap/eddy_graph.f90                        | 20 +++++------
 Overlap/eddy_graph_in.sh                      |  2 +-
 Overlap/get_snapshot.f90                      |  8 ++---
 Overlap/overlap.f90                           |  6 ++--
 Overlap/write_overlap.f90                     |  4 +--
 38 files changed, 248 insertions(+), 251 deletions(-)
 delete mode 100644 Common/shp_tr_open.f90
 rename Common/{shp_tr_close.f90 => shpc_close.f90} (57%)
 rename Common/{shp_tr_create.f90 => shpc_create.f90} (83%)
 create mode 100644 Common/shpc_open.f90

diff --git a/Common/derived_types.f90 b/Common/derived_types.f90
index d621ba47..bf15e871 100644
--- a/Common/derived_types.f90
+++ b/Common/derived_types.f90
@@ -66,7 +66,7 @@ module derived_types
   real, parameter:: missing_ssh = 1e4 ! flag for undefined SSH
   real, parameter:: missing_speed = 1e4 ! flag for missing max speed
 
-  type shp_tr ! shapefile triplet
+  type shpc ! shapefile collection
      TYPE(shpfileobject) extremum ! shapefile extremum
      TYPE(shpfileobject) outermost ! shapefile outermost_contour
      TYPE(shpfileobject) max_speed ! shapefile max_speed_contour
@@ -77,7 +77,7 @@ module derived_types
      integer out_r_eq_area, out_ssh, out_date, out_eddy_index, out_radius4
      integer max_speed_r_eq_area, max_speed_ssh, max_speed_date, &
           max_speed_eddy_index
-  end type Shp_tr
+  end type Shpc
 
   private shpfileobject
 
diff --git a/Common/read_eddy.f90 b/Common/read_eddy.f90
index 7c2be89c..3bb7486c 100644
--- a/Common/read_eddy.f90
+++ b/Common/read_eddy.f90
@@ -15,7 +15,7 @@ contains
     use shapelib, only: shpobject, shpdestroyobject
     use shapelib_03, only: shp_read_object_03, dbf_read_attribute_03
     
-    use derived_types, only: eddy, shp_tr
+    use derived_types, only: eddy, shpc
 
     type(eddy), intent(out):: e
     ! All components are defined. Components delta_in and delta_out
@@ -23,7 +23,7 @@ contains
     
     integer, intent(out):: d ! date
     integer, intent(out):: i ! eddy index
-    TYPE(shp_tr), intent(in):: hshp
+    TYPE(shpc), intent(in):: hshp
     integer, intent(in):: ishape ! 0-based
 
     ! Local:
diff --git a/Common/read_field_indices.f90 b/Common/read_field_indices.f90
index 34fb80c9..3ff2a9f1 100644
--- a/Common/read_field_indices.f90
+++ b/Common/read_field_indices.f90
@@ -10,9 +10,9 @@ contains
     use ezmpi, only: ezmpi_bcast
     use shapelib_03, only: dbf_get_field_index_03
 
-    use derived_types, only: shp_tr
+    use derived_types, only: shpc
 
-    TYPE(shp_tr), intent(inout):: hshp
+    TYPE(shpc), intent(inout):: hshp
     integer, intent(in):: rank
 
     !---------------------------------------------------------------------
diff --git a/Common/read_snapshot.f90 b/Common/read_snapshot.f90
index 1226d513..cfd08581 100644
--- a/Common/read_snapshot.f90
+++ b/Common/read_snapshot.f90
@@ -13,12 +13,12 @@ contains
     use contour_531, only: convert_to_ind 
     use nr_util, only: assert
 
-    use derived_types, only: snapshot, eddy, shp_tr
+    use derived_types, only: snapshot, eddy, shpc
     use read_eddy_m, only: read_eddy
 
     type(snapshot), intent(out):: s ! completely defined
     integer, intent(in):: k ! date index
-    TYPE(shp_tr), intent(in):: hshp
+    TYPE(shpc), intent(in):: hshp
 
     real, intent(in):: corner(:) ! (2) longitude and latitude of the
     ! corner of the whole grid in input NetCDF, in rad
diff --git a/Common/shp_tr_open.f90 b/Common/shp_tr_open.f90
deleted file mode 100644
index e6032aa1..00000000
--- a/Common/shp_tr_open.f90
+++ /dev/null
@@ -1,31 +0,0 @@
-module shp_tr_open_m
-
-  implicit none
-
-contains
-
-  subroutine shp_tr_open(hshp, shp_tr_dir, rank)
-
-    ! Libraries:
-    use shapelib_03, only: shp_open_03
-
-    use derived_types, only: shp_tr
-    use read_field_indices_m, only: read_field_indices
-
-    TYPE(shp_tr), intent(out):: hshp
-    character(len = *), intent(in):: shp_tr_dir
-    integer, intent(in):: rank
-
-    !--------------------------------------------------------------------
-
-    call shp_open_03(hshp%extremum, shp_tr_dir // "/extremum", &
-         pszaccess = "rb")
-    call shp_open_03(hshp%outermost, shp_tr_dir // "/outermost_contour", &
-         pszaccess = "rb")
-    call shp_open_03(hshp%max_speed, shp_tr_dir // "/max_speed_contour", &
-         pszaccess = "rb")
-    call read_field_indices(hshp, rank)
-
-  end subroutine shp_tr_open
-
-end module shp_tr_open_m
diff --git a/Common/shp_tr_close.f90 b/Common/shpc_close.f90
similarity index 57%
rename from Common/shp_tr_close.f90
rename to Common/shpc_close.f90
index f4b0460e..9ee71014 100644
--- a/Common/shp_tr_close.f90
+++ b/Common/shpc_close.f90
@@ -1,17 +1,17 @@
-module shp_tr_close_m
+module shpc_close_m
 
   implicit none
 
 contains
 
-  subroutine shp_tr_close(hshp)
+  subroutine shpc_close(hshp)
 
     ! Libraries:
     use shapelib, only: shpclose
 
-    use derived_types, only: shp_tr
+    use derived_types, only: shpc
 
-    TYPE(shp_tr), intent(inout):: hshp
+    TYPE(shpc), intent(inout):: hshp
 
     !-------------------------------------------------------------
 
@@ -19,6 +19,6 @@ contains
     CALL shpclose(hshp%outermost)
     CALL shpclose(hshp%max_speed)
 
-  end subroutine shp_tr_close
+  end subroutine shpc_close
   
-end module shp_tr_close_m
+end module shpc_close_m
diff --git a/Common/shp_tr_create.f90 b/Common/shpc_create.f90
similarity index 83%
rename from Common/shp_tr_create.f90
rename to Common/shpc_create.f90
index b23df255..0967bef5 100644
--- a/Common/shp_tr_create.f90
+++ b/Common/shpc_create.f90
@@ -1,23 +1,23 @@
-module shp_tr_create_m
+module shpc_create_m
 
   implicit none
 
 contains
 
-  subroutine shp_tr_create(hshp, shp_tr_dir)
+  subroutine shpc_create(hshp, shpc_dir)
 
     ! Libraries:
     use shapelib, only: shpt_point, shpt_polygon, ftdouble, ftinteger
     use shapelib_03, only: shp_create_03, dbf_add_field_03
 
-    use derived_types, only: shp_tr
+    use derived_types, only: shpc
 
-    TYPE(shp_tr), intent(out):: hshp
-    character(len = *), intent(in):: shp_tr_dir
+    TYPE(shpc), intent(out):: hshp
+    character(len = *), intent(in):: shpc_dir
 
     !---------------------------------------------------------------------
 
-    call shp_create_03(shp_tr_dir // "/extremum", shpt_point, &
+    call shp_create_03(shpc_dir // "/extremum", shpt_point, &
          hshp%extremum)
     call dbf_add_field_03(hshp%extr_ssh, hshp%extremum, 'ssh', ftdouble, &
          nwidth = 13, ndecimals = 6)
@@ -34,7 +34,7 @@ contains
     call dbf_add_field_03(hshp%extr_speed, hshp%extremum, 'speed', ftdouble, &
          nwidth = 13, ndecimals = 6)
 
-    call shp_create_03(shp_tr_dir // "/outermost_contour", shpt_polygon, &
+    call shp_create_03(shpc_dir // "/outermost_contour", shpt_polygon, &
          hshp%outermost)
     call dbf_add_field_03(hshp%out_r_eq_area, hshp%outermost, &
          'r_eq_area', ftdouble, nwidth = 10, ndecimals = 4)
@@ -47,7 +47,7 @@ contains
     call dbf_add_field_03(hshp%out_radius4, hshp%outermost, 'radius4', &
          ftinteger, nwidth = 2, ndecimals = 0)
 
-    call shp_create_03(shp_tr_dir // "/max_speed_contour", shpt_polygon, &
+    call shp_create_03(shpc_dir // "/max_speed_contour", shpt_polygon, &
          hshp%max_speed)
     call dbf_add_field_03(hshp%max_speed_r_eq_area, hshp%max_speed, &
          'r_eq_area', ftdouble, nwidth = 10, ndecimals = 4)
@@ -58,6 +58,6 @@ contains
     call dbf_add_field_03(hshp%max_speed_eddy_index, hshp%max_speed, &
          'eddy_index', ftinteger, nwidth = 5, ndecimals = 0)
 
-  end subroutine shp_tr_create
+  end subroutine shpc_create
 
-end module shp_tr_create_m
+end module shpc_create_m
diff --git a/Common/shpc_open.f90 b/Common/shpc_open.f90
new file mode 100644
index 00000000..a0e5af20
--- /dev/null
+++ b/Common/shpc_open.f90
@@ -0,0 +1,31 @@
+module shpc_open_m
+
+  implicit none
+
+contains
+
+  subroutine shpc_open(hshp, shpc_dir, rank)
+
+    ! Libraries:
+    use shapelib_03, only: shp_open_03
+
+    use derived_types, only: shpc
+    use read_field_indices_m, only: read_field_indices
+
+    TYPE(shpc), intent(out):: hshp
+    character(len = *), intent(in):: shpc_dir
+    integer, intent(in):: rank
+
+    !--------------------------------------------------------------------
+
+    call shp_open_03(hshp%extremum, shpc_dir // "/extremum", &
+         pszaccess = "rb")
+    call shp_open_03(hshp%outermost, shpc_dir // "/outermost_contour", &
+         pszaccess = "rb")
+    call shp_open_03(hshp%max_speed, shpc_dir // "/max_speed_contour", &
+         pszaccess = "rb")
+    call read_field_indices(hshp, rank)
+
+  end subroutine shpc_open
+
+end module shpc_open_m
diff --git a/Common/write_eddy.f90 b/Common/write_eddy.f90
index 41e01d20..841fc8d9 100644
--- a/Common/write_eddy.f90
+++ b/Common/write_eddy.f90
@@ -14,10 +14,10 @@ contains
     use shapelib_03, only: shp_append_point_03, dbf_write_attribute_03, &
          shp_append_object_03, shp_append_null_03
 
-    use derived_types, only: eddy, missing_speed, shp_tr
+    use derived_types, only: eddy, missing_speed, shpc
 
     type(eddy), intent(in):: e
-    TYPE(shp_tr), intent(in):: hshp
+    TYPE(shpc), intent(in):: hshp
     integer, intent(in):: days_1950 ! date
     integer, intent(in):: i ! eddy index
 
diff --git a/Convert_Matlab/inst_eddies_HDF5.py b/Convert_Matlab/inst_eddies_HDF5.py
index b46a962e..9b0dd1a6 100755
--- a/Convert_Matlab/inst_eddies_HDF5.py
+++ b/Convert_Matlab/inst_eddies_HDF5.py
@@ -1,6 +1,6 @@
 #!/usr/bin/env python3
 
-"""Converts adt_YYYY-MM-DD.mat files to a triplet of shapefiles. The
+"""Converts adt_YYYY-MM-DD.mat files to a collection of shapefiles. The
     mat files should be in HDF5 format. The data in each input file is
     the set of detected instantaneous eddies at a given date.
 
@@ -96,24 +96,24 @@ else:
     final_date = my_date
 
 factories = [dict(writers = {}, cell_name = "Anticyclonic_Cell",
-                  cyclone = False, SHP_triplet = "Snapshot_anti"),
+                  cyclone = False, SHPC = "Snapshot_anti"),
              dict(writers = {}, cell_name = "Cyclonic_Cell", cyclone = True,
-                  SHP_triplet = "Snapshot_cyclo")]
+                  SHPC = "Snapshot_cyclo")]
 
 for f in factories:
-    file = path.join(f["SHP_triplet"], "extremum")
+    file = path.join(f["SHPC"], "extremum")
     f["writers"]["extr"] = shapefile.Writer(file, shapeType = shapefile.POINT)
     
-    file = path.join(f["SHP_triplet"], "outermost_contour")
+    file = path.join(f["SHPC"], "outermost_contour")
     f["writers"]["outer"] = shapefile.Writer(file,
                                              shapeType = shapefile.POLYGON)
     
-    file = path.join(f["SHP_triplet"], "max_speed_contour")
+    file = path.join(f["SHPC"], "max_speed_contour")
     f["writers"]["max_speed"] = shapefile.Writer(file,
                                                  shapeType = shapefile.POLYGON)
     
     define_fields(f["writers"])
-    file = path.join(f["SHP_triplet"], "ishape_last.txt")
+    file = path.join(f["SHPC"], "ishape_last.txt")
     f["writers"]["ishape_last"] = open(file, "w")
     
 # First date, get X and Y:
@@ -142,5 +142,5 @@ nml = f90nml.Namelist()
 nml["grid_nml"] = dict(corner_deg = [X[0], Y[0]], nlon = X.size, nlat = Y.size)
 
 for f in factories:
-    nml.write(path.join(f["SHP_triplet"], "grid_nml.txt"), force = True)
+    nml.write(path.join(f["SHPC"], "grid_nml.txt"), force = True)
     for k, v in f["writers"].items(): v.close()
diff --git a/Inst_eddies/Analysis/triplet_dump.sh b/Inst_eddies/Analysis/triplet_dump.sh
index 9cef069f..567db996 100755
--- a/Inst_eddies/Analysis/triplet_dump.sh
+++ b/Inst_eddies/Analysis/triplet_dump.sh
@@ -1,8 +1,8 @@
-# Dumps the content of a triplet of shapefiles, dbf and shp.
+# Dumps the content of a collection of shapefiles, dbf and shp.
 
 if (($# != 1))
 then
-    echo "Required argument: directory containing triplet of shapefiles"
+    echo "Required argument: directory containing collection of shapefiles"
     exit 1
 fi
 
diff --git a/Inst_eddies/CMakeLists.txt b/Inst_eddies/CMakeLists.txt
index 3864345b..b67461b0 100644
--- a/Inst_eddies/CMakeLists.txt
+++ b/Inst_eddies/CMakeLists.txt
@@ -4,8 +4,8 @@ add_executable(inst_eddies inst_eddies.f90
   good_contour.f90 ${CMAKE_SOURCE_DIR}/Common/spher_polyline_area.f90
   mean_speed.f90 inside_4.f90 set_all_outerm.f90
   ${CMAKE_SOURCE_DIR}/Common/derived_types.f90
-  ${CMAKE_SOURCE_DIR}/Common/shp_tr_create.f90 nearby_extr.f90 get_var.f90
-  ${CMAKE_SOURCE_DIR}/Common/shp_tr_close.f90 write_aux.f90 config.f90)
+  ${CMAKE_SOURCE_DIR}/Common/shpc_create.f90 nearby_extr.f90 get_var.f90
+  ${CMAKE_SOURCE_DIR}/Common/shpc_close.f90 write_aux.f90 config.f90)
 
 target_include_directories(inst_eddies PRIVATE ${fortrangis_INCLUDE_DIR})
 
diff --git a/Inst_eddies/Tests/CMakeLists.txt b/Inst_eddies/Tests/CMakeLists.txt
index c5d7a4f5..49229f54 100644
--- a/Inst_eddies/Tests/CMakeLists.txt
+++ b/Inst_eddies/Tests/CMakeLists.txt
@@ -4,9 +4,9 @@ add_executable(test_get_1_outerm good_contour.f90
   ${CMAKE_SOURCE_DIR}/Common/derived_types.f90 get_1_outerm.f90
   ${CMAKE_SOURCE_DIR}/Common/spher_polyline_area.f90
   ${CMAKE_CURRENT_LIST_DIR}/test_get_1_outerm.f90
-  ${CMAKE_SOURCE_DIR}/Common/shp_tr_create.f90
+  ${CMAKE_SOURCE_DIR}/Common/shpc_create.f90
   ${CMAKE_SOURCE_DIR}/Common/write_eddy.f90
-  ${CMAKE_SOURCE_DIR}/Common/shp_tr_close.f90)
+  ${CMAKE_SOURCE_DIR}/Common/shpc_close.f90)
 
 target_link_libraries(test_get_1_outerm geometry NetCDF95::netcdf95 shapelib_03
   contour_531 nr_util jumble NetCDF_Fortran::NetCDF_Fortran)
@@ -21,9 +21,9 @@ add_executable(test_set_all_outerm
   local_extrema.f90 get_1_outerm.f90 good_contour.f90
   ${CMAKE_SOURCE_DIR}/Common/spher_polyline_area.f90 nearby_extr.f90
   get_var.f90 ${CMAKE_CURRENT_LIST_DIR}/test_set_all_outerm.f90
-  config.f90 ${CMAKE_SOURCE_DIR}/Common/shp_tr_create.f90
+  config.f90 ${CMAKE_SOURCE_DIR}/Common/shpc_create.f90
   ${CMAKE_SOURCE_DIR}/Common/write_eddy.f90
-  ${CMAKE_SOURCE_DIR}/Common/shp_tr_close.f90)
+  ${CMAKE_SOURCE_DIR}/Common/shpc_close.f90)
 
 target_link_libraries(test_set_all_outerm geometry NetCDF95::netcdf95
   numer_rec_95 shapelib_03 contour_531 jumble nr_util
@@ -83,8 +83,8 @@ add_executable(test_nearby_extr nearby_extr.f90
   ${CMAKE_SOURCE_DIR}/Common/read_snapshot.f90
   ${CMAKE_SOURCE_DIR}/Common/read_eddy.f90
   ${CMAKE_SOURCE_DIR}/Common/read_field_indices.f90
-  ${CMAKE_SOURCE_DIR}/Common/shp_tr_open.f90
-  ${CMAKE_SOURCE_DIR}/Common/shp_tr_close.f90)
+  ${CMAKE_SOURCE_DIR}/Common/shpc_open.f90
+  ${CMAKE_SOURCE_DIR}/Common/shpc_close.f90)
 
 target_link_libraries(test_nearby_extr NetCDF95::netcdf95 shapelib_03
   contour_531 jumble nr_util NetCDF_Fortran::NetCDF_Fortran ezmpi
@@ -109,11 +109,11 @@ add_executable(test_set_max_speed
   good_contour.f90 max_speed_contour_ssh.f90 mean_speed.f90
   ${CMAKE_SOURCE_DIR}/Common/spher_polyline_area.f90 inside_4.f90
   ${CMAKE_CURRENT_LIST_DIR}/test_set_max_speed.f90
-  ${CMAKE_SOURCE_DIR}/Common/shp_tr_open.f90
-  ${CMAKE_SOURCE_DIR}/Common/shp_tr_close.f90
+  ${CMAKE_SOURCE_DIR}/Common/shpc_open.f90
+  ${CMAKE_SOURCE_DIR}/Common/shpc_close.f90
   ${CMAKE_SOURCE_DIR}/Common/read_field_indices.f90
   ${CMAKE_SOURCE_DIR}/Common/read_eddy.f90
-  ${CMAKE_SOURCE_DIR}/Common/shp_tr_create.f90
+  ${CMAKE_SOURCE_DIR}/Common/shpc_create.f90
   ${CMAKE_SOURCE_DIR}/Common/write_eddy.f90)
 
 target_link_libraries(test_set_max_speed geometry numer_rec_95
diff --git a/Inst_eddies/Tests/test_get_1_outerm.f90 b/Inst_eddies/Tests/test_get_1_outerm.f90
index dedc8fbd..18ac59bb 100644
--- a/Inst_eddies/Tests/test_get_1_outerm.f90
+++ b/Inst_eddies/Tests/test_get_1_outerm.f90
@@ -9,10 +9,10 @@ program test_get_1_outerm
        nf95_gw_var, find_coord, nf95_get_att
   use nr_util, only: deg_to_rad, assert
 
-  use derived_types, only: eddy, shp_tr, null_ssh_contour, missing_speed
+  use derived_types, only: eddy, shpc, null_ssh_contour, missing_speed
   use get_1_outerm_m, only: get_1_outerm
-  use shp_tr_close_m, only: shp_tr_close
-  use shp_tr_create_m, only: shp_tr_create
+  use shpc_close_m, only: shpc_close
+  use shpc_create_m, only: shpc_create
   use write_eddy_m, only: write_eddy
 
   implicit none
@@ -30,7 +30,7 @@ program test_get_1_outerm
   ! level of innermost contour, for each extremum
   
   logical:: cyclone = .true.
-  TYPE(shp_tr) hshp
+  TYPE(shpc) hshp
   character(len = 30) time_unit
   real time
   type(eddy) e
@@ -110,9 +110,9 @@ program test_get_1_outerm
      e%radius4 = - 1
      e%valid = .true.
      e%interpolated = .false.
-     call shp_tr_create(hshp, shp_tr_dir = "SHPC")
+     call shpc_create(hshp, shpc_dir = "SHPC")
      call write_eddy(e, hshp, days_1950, i = 1)
-     CALL shp_tr_close(hshp)
+     CALL shpc_close(hshp)
      print *, 'Created "SHPC".'
   else
      print *, "Could not find an outermost contour."
diff --git a/Inst_eddies/Tests/test_nearby_extr.f90 b/Inst_eddies/Tests/test_nearby_extr.f90
index 84ff33d7..11f00354 100644
--- a/Inst_eddies/Tests/test_nearby_extr.f90
+++ b/Inst_eddies/Tests/test_nearby_extr.f90
@@ -6,17 +6,17 @@ program test_nearby_extr
   use nr_util, only: deg_to_rad, assert, rad_to_deg
   use shapelib_03, only: dbf_read_attribute_03
 
-  use derived_types, only: snapshot, shp_tr
+  use derived_types, only: snapshot, shpc
   use nearby_extr_m, only: nearby_extr
   use read_snapshot_m, only: read_snapshot
-  use shp_tr_close_m, only: shp_tr_close
-  use shp_tr_open_m, only: shp_tr_open
+  use shpc_close_m, only: shpc_close
+  use shpc_open_m, only: shpc_open
 
   implicit none
 
   character(len = :), allocatable:: shpc_dir
   type(snapshot) s
-  TYPE(shp_tr) hshp
+  TYPE(shpc) hshp
   integer k1, unit, ishape_last, l
 
   real corner_deg(2)
@@ -50,12 +50,12 @@ program test_nearby_extr
   read(unit, fmt = *) ishape_last ! first date
   close(unit)
 
-  call shp_tr_open(hshp, trim(shpc_dir), rank = 0)
+  call shpc_open(hshp, trim(shpc_dir), rank = 0)
   call dbf_read_attribute_03(k1, hshp%extremum, hshp%extr_date, ishape = 0)
   call read_snapshot(s, k1, hshp, corner_deg * deg_to_rad, &
        step_deg * deg_to_rad, nlon, nlat, copy = 0, k1 = k1, &
        ishape_last = [ishape_last])
-  CALL shp_tr_close(hshp)
+  CALL shpc_close(hshp)
 
   nearby = nearby_extr(s%extr_map, s%list_vis, i = 4)
   print *, "nearby:"
diff --git a/Inst_eddies/Tests/test_set_all_outerm.f90 b/Inst_eddies/Tests/test_set_all_outerm.f90
index 474ab404..2aab08d8 100644
--- a/Inst_eddies/Tests/test_set_all_outerm.f90
+++ b/Inst_eddies/Tests/test_set_all_outerm.f90
@@ -10,11 +10,11 @@ program test_set_all_outerm
   use nr_util, only: pi, assert, deg_to_rad, rad_to_deg, twopi
 
   use config_m, only: config, max_radius_deg, min_radius
-  use derived_types, only: snapshot, shp_tr, null_ssh_contour, missing_speed
+  use derived_types, only: snapshot, shpc, null_ssh_contour, missing_speed
   use get_var_m, only: get_var
   use set_all_outerm_m, only: set_all_outerm
-  use shp_tr_close_m, only: shp_tr_close
-  use shp_tr_create_m, only: shp_tr_create
+  use shpc_close_m, only: shpc_close
+  use shpc_create_m, only: shpc_create
   use write_eddy_m, only: write_eddy
 
   implicit none
@@ -35,7 +35,7 @@ program test_set_all_outerm
 
   real step_deg(2), step(2) ! longitude and latitude steps, in degrees and rad
   logical periodic ! grid is periodic in longitude
-  TYPE(shp_tr) hshp_cyclo, hshp_anti
+  TYPE(shpc) hshp_cyclo, hshp_anti
 
   !--------------------------------------------------------------
 
@@ -88,8 +88,8 @@ program test_set_all_outerm
      s%list_vis(i)%radius4 = 0
   end do
 
-  call shp_tr_create(hshp_cyclo, shp_tr_dir = "SHPC_cyclo")
-  call shp_tr_create(hshp_anti, shp_tr_dir = "SHPC_anti")
+  call shpc_create(hshp_cyclo, shpc_dir = "SHPC_cyclo")
+  call shpc_create(hshp_anti, shpc_dir = "SHPC_anti")
   n_cyclo = 0
   n_anti = 0
 
@@ -105,8 +105,8 @@ program test_set_all_outerm
 
   print *, "s%number_vis_extr = ", s%number_vis_extr
 
-  CALL shp_tr_close(hshp_cyclo)
-  CALL shp_tr_close(hshp_anti)
+  CALL shpc_close(hshp_cyclo)
+  CALL shpc_close(hshp_anti)
   print *, 'Created shapefile collections in SHPC_cyclo and SHPC_anti.'
   print *, "Average number of points per outermost contour: ", &
        sum(s%list_vis%out_cont%n_points) / real(s%number_vis_extr)
diff --git a/Inst_eddies/Tests/test_set_max_speed.f90 b/Inst_eddies/Tests/test_set_max_speed.f90
index 65cb02d1..39f5dfc2 100644
--- a/Inst_eddies/Tests/test_set_max_speed.f90
+++ b/Inst_eddies/Tests/test_set_max_speed.f90
@@ -11,12 +11,12 @@ program test_set_max_speed
        find_coord, nf95_inquire_dimension
   use nr_util, only: deg_to_rad
 
-  use derived_types, only: eddy, shp_tr
+  use derived_types, only: eddy, shpc
   use read_eddy_m, only: read_eddy
   use set_max_speed_m, only: set_max_speed
-  use shp_tr_close_m, only: shp_tr_close
-  use shp_tr_create_m, only: shp_tr_create
-  use shp_tr_open_m, only: shp_tr_open
+  use shpc_close_m, only: shpc_close
+  use shpc_create_m, only: shpc_create
+  use shpc_open_m, only: shpc_open
   use write_eddy_m, only: write_eddy
 
   implicit none
@@ -27,8 +27,8 @@ program test_set_max_speed
   real, allocatable:: u(:, :), v(:, :) ! (nlon, nlat) wind, in m s-1
   type(eddy) e
   real corner(2), step(2) ! in rad
-  TYPE(shp_tr) hshp
-  character(len = :), allocatable:: shp_tr_dir
+  TYPE(shpc) hshp
+  character(len = :), allocatable:: shpc_dir
 
   real, allocatable:: outside_points(:, :) ! (2, :) longitude and
   ! latitude, in rad, of all the extrema except the target extremum
@@ -44,8 +44,7 @@ program test_set_max_speed
      call mpi_abort(MPI_Comm_world, errorcode = 1)
   end if
 
-  call get_command_arg_dyn(1, shp_tr_dir, &
-       "Required argument: SHP-triplet-directory")
+  call get_command_arg_dyn(1, shpc_dir, "Required argument: SHPC-directory")
   print *, "Reading from h.nc..."
   call nf95_open("h.nc", nf90_nowrite, ncid)
 
@@ -81,9 +80,9 @@ program test_set_max_speed
   call nf95_close(ncid)
 
   print *, "Reading from shapefiles..."
-  call shp_tr_open(hshp, shp_tr_dir, rank = 0)
+  call shpc_open(hshp, shpc_dir, rank = 0)
   call read_eddy(e, d, i, hshp, ishape = 0)
-  CALL shp_tr_close(hshp)
+  CALL shpc_close(hshp)
 
   print *, "Reading from outside_points.csv..."
   call new_unit(unit)
@@ -105,9 +104,9 @@ program test_set_max_speed
   step = 0.25  * deg_to_rad
   call set_max_speed(e, nint((e%coord_extr - corner) / step) + 1, &
        outside_points, ssh, u, v, corner, step)
-  call shp_tr_create(hshp, shp_tr_dir = "SHPC")
+  call shpc_create(hshp, shpc_dir = "SHPC")
   call write_eddy(e, hshp, d, i)
-  CALL shp_tr_close(hshp)
+  CALL shpc_close(hshp)
   print *, 'Created "SHPC".'
   call mpi_finalize
 
diff --git a/Inst_eddies/config.f90 b/Inst_eddies/config.f90
index 9cb8351b..df075558 100644
--- a/Inst_eddies/config.f90
+++ b/Inst_eddies/config.f90
@@ -26,21 +26,21 @@ contains
     write(unit = error_unit, nml = main_nml)
     write(unit = error_unit, fmt = *) "config: Enter namelist main_nml."
     read(unit = *, nml = main_nml)
-    call write_nml(shp_tr_dir = "SHPC_cyclo")
-    call write_nml(shp_tr_dir = "SHPC_anti")
+    call write_nml(shpc_dir = "SHPC_cyclo")
+    call write_nml(shpc_dir = "SHPC_anti")
 
   end subroutine config
 
   !*********************************************************************
 
-  subroutine write_nml(shp_tr_dir)
+  subroutine write_nml(shpc_dir)
 
     use, intrinsic:: ISO_FORTRAN_ENV
 
     ! Libraries:
     use jumble, only: new_unit
 
-    character(len = *), intent(in):: shp_tr_dir
+    character(len = *), intent(in):: shpc_dir
 
     ! Local:
     integer unit, iostat
@@ -49,14 +49,14 @@ contains
     !----------------------------------------------------------------------
 
     call new_unit(unit)
-    open(unit, file = shp_tr_dir // "/used_nml.txt", status = "replace", &
+    open(unit, file = shpc_dir // "/used_nml.txt", status = "replace", &
          action = "write", iostat = iostat, iomsg = iomsg)
-    ! (This also allows us to verify that the directory shp_tr_dir exists.)
+    ! (This also allows us to verify that the directory shpc_dir exists.)
 
     if (iostat /= 0) then
        write(unit = error_unit, fmt = *) "write_nml: ", trim(iomsg)
        write(unit = error_unit, fmt = *) 'write_nml: ', &
-            'Have you created the directory "', shp_tr_dir, '"?'
+            'Have you created the directory "', shpc_dir, '"?'
        stop 1
     end if
 
diff --git a/Inst_eddies/inst_eddies.f90 b/Inst_eddies/inst_eddies.f90
index 0403b0cc..2b7e9587 100644
--- a/Inst_eddies/inst_eddies.f90
+++ b/Inst_eddies/inst_eddies.f90
@@ -11,20 +11,20 @@ program inst_eddies
   use nr_util, only: assert, deg_to_rad, twopi, pi
 
   use config_m, only: config, max_radius_deg, min_radius
-  use derived_types, only: snapshot, null_ssh_contour, missing_speed, shp_tr
+  use derived_types, only: snapshot, null_ssh_contour, missing_speed, shpc
   use get_var_m, only: get_var
   use nearby_extr_m, only: nearby_extr
   use set_all_outerm_m, only: set_all_outerm
   use set_max_speed_m, only: set_max_speed
-  use shp_tr_close_m, only: shp_tr_close
-  use shp_tr_create_m, only: shp_tr_create
+  use shpc_close_m, only: shpc_close
+  use shpc_create_m, only: shpc_create
   use write_aux_m, only: write_aux
   use write_eddy_m, only: write_eddy
 
   implicit none
 
   type(snapshot) s
-  TYPE(shp_tr) hshp_cyclo, hshp_anti
+  TYPE(shpc) hshp_cyclo, hshp_anti
   integer i, days_1950, n_cyclo, n_anti
 
   integer ncid, dimid, varid, copy
@@ -177,8 +177,8 @@ program inst_eddies
 
   ! Write snapshot:
 
-  call shp_tr_create(hshp_cyclo, shp_tr_dir = "SHPC_cyclo")
-  call shp_tr_create(hshp_anti, shp_tr_dir = "SHPC_anti")
+  call shpc_create(hshp_cyclo, shpc_dir = "SHPC_cyclo")
+  call shpc_create(hshp_anti, shpc_dir = "SHPC_anti")
   n_cyclo = 0
   n_anti = 0
 
@@ -192,13 +192,13 @@ program inst_eddies
      end if
   end do
 
-  CALL shp_tr_close(hshp_cyclo)
-  CALL shp_tr_close(hshp_anti)
+  CALL shpc_close(hshp_cyclo)
+  CALL shpc_close(hshp_anti)
   print *, 'inst_eddies: Created shapefile collections in SHPC_cyclo and ', &
        'SHPC_anti.'
   call write_aux(corner_deg, step_deg, nlon, nlat, n_cyclo, &
-       shp_tr_dir = "SHPC_cyclo")
+       shpc_dir = "SHPC_cyclo")
   call write_aux(corner_deg, step_deg, nlon, nlat, n_anti, &
-       shp_tr_dir = "SHPC_anti")
+       shpc_dir = "SHPC_anti")
 
 end program inst_eddies
diff --git a/Inst_eddies/write_aux.f90 b/Inst_eddies/write_aux.f90
index a4c831ca..373ce935 100644
--- a/Inst_eddies/write_aux.f90
+++ b/Inst_eddies/write_aux.f90
@@ -4,7 +4,7 @@ module write_aux_m
 
 contains
 
-  subroutine write_aux(corner_deg, step_deg, nlon, nlat, n_shapes, shp_tr_dir)
+  subroutine write_aux(corner_deg, step_deg, nlon, nlat, n_shapes, shpc_dir)
 
     ! Write auxiliary files "grid_nml.txt" and "ishape_last.txt".
 
@@ -27,7 +27,7 @@ contains
     ! the grid is global
 
     integer, intent(in):: n_shapes
-    character(len = *), intent(in):: shp_tr_dir
+    character(len = *), intent(in):: shpc_dir
 
     ! Local:
     namelist /grid_nml/ corner_deg, step_deg, nlon, nlat
@@ -36,12 +36,12 @@ contains
     !--------------------------------------------------------------------
 
     call new_unit(unit)
-    open(unit, file = shp_tr_dir // "/grid_nml.txt", status = "replace", &
+    open(unit, file = shpc_dir // "/grid_nml.txt", status = "replace", &
          action = "write")
     write(unit, nml = grid_nml)
     close(unit)
 
-    open(unit, file = shp_tr_dir // "/ishape_last.txt", status = "replace", &
+    open(unit, file = shpc_dir // "/ishape_last.txt", status = "replace", &
          action = "write")
     write(unit, fmt = *) n_shapes - 1
     close(unit)
diff --git a/Overlap/Analysis/plot_traj.py b/Overlap/Analysis/plot_traj.py
index d79f6269..42c9d41a 100755
--- a/Overlap/Analysis/plot_traj.py
+++ b/Overlap/Analysis/plot_traj.py
@@ -1,6 +1,6 @@
 #!/usr/bin/env python3
 
-"""Must be run from directory containing edgelist.csv and SHP-triplet
+"""Must be run from directory containing edgelist.csv and SHPC
 directory for interpolated eddies.
 
 """
@@ -102,8 +102,8 @@ if __name__ == "__main__":
     import time
     
     parser = argparse.ArgumentParser(description = __doc__)
-    parser.add_argument("shp_tr_dir", help = "directory containing triplet of "
-                        "shapefiles, with visible eddies at all dates")
+    parser.add_argument("shpc_dir", help = "directory containing SHPC, with "
+                        "visible eddies at all dates")
     parser.add_argument("-l", "--label",
                         choices = ["root", "leaf", "split", "merge"])
     parser.add_argument("-s", "--save", metavar = "format",
@@ -129,7 +129,7 @@ if __name__ == "__main__":
             print("Reading edge list in current directory...")
             t0 = time.perf_counter()
             
-        G = report_graph.read_eddy_graph("edgelist.csv", args.shp_tr_dir)
+        G = report_graph.read_eddy_graph("edgelist.csv", args.shpc_dir)
 
         if args.time:
             t1 = time.perf_counter()
@@ -157,7 +157,7 @@ if __name__ == "__main__":
             print("Reading edge list in current directory...")
             t0 = time.perf_counter()
             
-        G = report_graph.read_eddy_graph("edgelist.csv", args.shp_tr_dir)
+        G = report_graph.read_eddy_graph("edgelist.csv", args.shpc_dir)
 
         if args.time:
             t1 = time.perf_counter()
@@ -180,7 +180,7 @@ if __name__ == "__main__":
             print("Reading edge lists in current directory...")
             t0 = time.perf_counter()
             
-        G = report_graph.read_eddy_graph("edgelist.csv", args.shp_tr_dir)
+        G = report_graph.read_eddy_graph("edgelist.csv", args.shpc_dir)
 
         if args.time:
             t1 = time.perf_counter()
diff --git a/Overlap/Analysis/renumber_interp.py b/Overlap/Analysis/renumber_interp.py
index 04af8107..45f17e8d 100755
--- a/Overlap/Analysis/renumber_interp.py
+++ b/Overlap/Analysis/renumber_interp.py
@@ -20,7 +20,7 @@ import shutil
 
 parser = argparse.ArgumentParser()
 parser.add_argument("input_dir",
-                    help = "containing the shpt of interpolated eddies and "
+                    help = "containing the SHPC of interpolated eddies and "
                     "edge list")
 args = parser.parse_args()
 
@@ -41,7 +41,7 @@ lon = []
 lat = []
 date_index = []
 eddy_index_old = []
-my_input = path.join(args.input_dir, "SHP_triplet")
+my_input = path.join(args.input_dir, "SHPC")
 
 with fiona.open(my_input, layer = "extremum") as extremum:
     for record in extremum:
@@ -71,7 +71,7 @@ for ishape in ind:
 
 for layer in fiona.listlayers(my_input):
     with fiona.open(my_input, layer = layer) as src:
-        with fiona.open("SHP_triplet", "w", layer = layer, **src.meta) as sink:
+        with fiona.open("SHPC", "w", layer = layer, **src.meta) as sink:
             for ishape in ind:
                 record = src[int(ishape)]
 
@@ -90,9 +90,9 @@ i = np.searchsorted(ishape_last, 0)
 # (Ensure that the first line corresponds to the first date present in
 # interpolated eddies.)
 
-np.savetxt("SHP_triplet/ishape_last.txt", ishape_last[i:], fmt = "%d")
-my_input = path.join(args.input_dir, "SHP_triplet/grid_nml.txt")
-shutil.copy(my_input, "SHP_triplet")
+np.savetxt("SHPC/ishape_last.txt", ishape_last[i:], fmt = "%d")
+my_input = path.join(args.input_dir, "SHPC/grid_nml.txt")
+shutil.copy(my_input, "SHPC")
 
 for orientation in ["cyclo", "anti"]:
     my_input = path.join(args.input_dir, f"edgelist_{orientation}.csv")
diff --git a/Overlap/Analysis/report_graph.py b/Overlap/Analysis/report_graph.py
index 406a82d2..7890368f 100755
--- a/Overlap/Analysis/report_graph.py
+++ b/Overlap/Analysis/report_graph.py
@@ -11,8 +11,8 @@ from os import path
 from networkx import nx_agraph
 import os
 
-def read_eddy_graph(edgelist, shp_tr_dir = None, read_interp = True):
-    """shp_tr_dir is for visible eddies."""
+def read_eddy_graph(edgelist, shpc_dir = None, read_interp = True):
+    """shpc_dir is for visible eddies."""
 
     G = nx.DiGraph()
 
@@ -49,9 +49,9 @@ def read_eddy_graph(edgelist, shp_tr_dir = None, read_interp = True):
                 print("Trying to read data on interpolated eddies but ",
                       f"{extr_file} is not readable")
 
-        if shp_tr_dir is not None:
+        if shpc_dir is not None:
             # Read and set attributes of Visible eddies:
-            extr_file = path.join(shp_tr_dir, "extremum")
+            extr_file = path.join(shpc_dir, "extremum")
             set_attribute(G, extr_file)
     else:
         print(edgelist, "not readable")
diff --git a/Overlap/Analysis/report_graph_int.py b/Overlap/Analysis/report_graph_int.py
index b6921270..9c273ce1 100755
--- a/Overlap/Analysis/report_graph_int.py
+++ b/Overlap/Analysis/report_graph_int.py
@@ -29,8 +29,8 @@ def date_eddy_to_node(d, eddy_index, e_overestim, d_init):
     """
     return (d- d_init) * e_overestim + eddy_index
 
-def read_eddy_graph(edgelist, shp_tr_dir = None, read_interp = True):
-    """shp_tr_dir is for visible eddies."""
+def read_eddy_graph(edgelist, shpc_dir = None, read_interp = True):
+    """shpc_dir is for visible eddies."""
     
     if os.access(edgelist, os.R_OK):
         G = nx.read_edgelist(edgelist, create_using = nx.DiGraph,
@@ -46,7 +46,7 @@ def read_eddy_graph(edgelist, shp_tr_dir = None, read_interp = True):
 
             # Assuming that the directory containing the interpolated
             # eddies is in the same location as edgelist:
-            extr_file = path.join(dir_edgelist, "SHP_triplet", "extremum.shp")
+            extr_file = path.join(dir_edgelist, "SHPC", "extremum.shp")
 
             if os.access(extr_file, os.R_OK):
                 set_attribute(G, extr_file)
@@ -54,9 +54,9 @@ def read_eddy_graph(edgelist, shp_tr_dir = None, read_interp = True):
                 print("Trying to read data on interpolated eddies but ",
                       f"{extr_file} is not readable")
 
-        if shp_tr_dir is not None:
+        if shpc_dir is not None:
             # Read and set attributes of Visible eddies:
-            extr_file = path.join(shp_tr_dir, "extremum")
+            extr_file = path.join(shpc_dir, "extremum")
             set_attribute(G, extr_file)
     else:
         print(edgelist, "not readable")
diff --git a/Overlap/CMakeLists.txt b/Overlap/CMakeLists.txt
index 25225fc6..c67dcd98 100644
--- a/Overlap/CMakeLists.txt
+++ b/Overlap/CMakeLists.txt
@@ -1,8 +1,8 @@
 add_executable(eddy_graph eddy_graph.f90
-  ${CMAKE_SOURCE_DIR}/Common/shp_tr_open.f90
-  ${CMAKE_SOURCE_DIR}/Common/shp_tr_create.f90 get_snapshot.f90
+  ${CMAKE_SOURCE_DIR}/Common/shpc_open.f90
+  ${CMAKE_SOURCE_DIR}/Common/shpc_create.f90 get_snapshot.f90
   overlap.f90 dispatch_snapshot.f90
-  ${CMAKE_SOURCE_DIR}/Common/shp_tr_close.f90
+  ${CMAKE_SOURCE_DIR}/Common/shpc_close.f90
   ${CMAKE_SOURCE_DIR}/Common/read_field_indices.f90
   ${CMAKE_SOURCE_DIR}/Common/read_snapshot.f90 recv_snapshot.f90
   candidate_overlap.f90 spher_polygon_area.f90
diff --git a/Overlap/Tests/CMakeLists.txt b/Overlap/Tests/CMakeLists.txt
index 91afd320..46eb1020 100644
--- a/Overlap/Tests/CMakeLists.txt
+++ b/Overlap/Tests/CMakeLists.txt
@@ -7,10 +7,10 @@ add_executable(test_overlap
   ${CMAKE_SOURCE_DIR}/Common/read_eddy.f90
   ${CMAKE_SOURCE_DIR}/Common/read_field_indices.f90
   candidate_overlap.f90 ${CMAKE_SOURCE_DIR}/Common/write_eddy.f90
-  ${CMAKE_SOURCE_DIR}/Common/shp_tr_create.f90 write_overlap.f90
+  ${CMAKE_SOURCE_DIR}/Common/shpc_create.f90 write_overlap.f90
   ${CMAKE_CURRENT_LIST_DIR}/test_overlap.f90
-  ${CMAKE_SOURCE_DIR}/Common/shp_tr_open.f90
-  ${CMAKE_SOURCE_DIR}/Common/shp_tr_close.f90 unit_edge_m.f90)
+  ${CMAKE_SOURCE_DIR}/Common/shpc_open.f90
+  ${CMAKE_SOURCE_DIR}/Common/shpc_close.f90 unit_edge_m.f90)
 
 target_link_libraries(test_overlap shapelib_03 geometry contour_531
   gpc_f ezmpi nr_util jumble MPI::MPI_Fortran)
@@ -21,7 +21,7 @@ target_include_directories(test_overlap PRIVATE ${fortrangis_INCLUDE_DIR})
 
 add_executable(test_read_snapshot
   ${CMAKE_SOURCE_DIR}/Common/derived_types.f90
-  ${CMAKE_SOURCE_DIR}/Common/shp_tr_create.f90
+  ${CMAKE_SOURCE_DIR}/Common/shpc_create.f90
   ${CMAKE_SOURCE_DIR}/Common/read_snapshot.f90
   ${CMAKE_SOURCE_DIR}/Common/write_eddy.f90
   ${CMAKE_SOURCE_DIR}/Common/read_eddy.f90
@@ -29,8 +29,8 @@ add_executable(test_read_snapshot
   ${CMAKE_CURRENT_LIST_DIR}/test_read_snapshot.f90
   ${CMAKE_SOURCE_DIR}/Tests/write_extr_map.f90
   ${CMAKE_CURRENT_LIST_DIR}/write_snapshot.f90
-  ${CMAKE_SOURCE_DIR}/Common/shp_tr_open.f90
-  ${CMAKE_SOURCE_DIR}/Common/shp_tr_close.f90)
+  ${CMAKE_SOURCE_DIR}/Common/shpc_open.f90
+  ${CMAKE_SOURCE_DIR}/Common/shpc_close.f90)
 
 target_link_libraries(test_read_snapshot NetCDF95::netcdf95
   shapelib_03 contour_531 gpc_f ezmpi nr_util jumble
@@ -64,13 +64,13 @@ target_include_directories(test_weight PRIVATE ${fortrangis_INCLUDE_DIR})
 
 add_executable(test_read_eddy
   ${CMAKE_SOURCE_DIR}/Common/derived_types.f90
-  ${CMAKE_SOURCE_DIR}/Common/shp_tr_create.f90
+  ${CMAKE_SOURCE_DIR}/Common/shpc_create.f90
   ${CMAKE_SOURCE_DIR}/Common/read_eddy.f90
   ${CMAKE_SOURCE_DIR}/Common/write_eddy.f90
   ${CMAKE_SOURCE_DIR}/Common/read_field_indices.f90
   ${CMAKE_CURRENT_LIST_DIR}/test_read_eddy.f90
-  ${CMAKE_SOURCE_DIR}/Common/shp_tr_open.f90
-  ${CMAKE_SOURCE_DIR}/Common/shp_tr_close.f90)
+  ${CMAKE_SOURCE_DIR}/Common/shpc_open.f90
+  ${CMAKE_SOURCE_DIR}/Common/shpc_close.f90)
 
 target_link_libraries(test_read_eddy shapelib_03 contour_531 gpc_f
   ezmpi nr_util MPI::MPI_Fortran)
@@ -81,10 +81,10 @@ target_include_directories(test_read_eddy PRIVATE ${fortrangis_INCLUDE_DIR})
 
 add_executable(test_write_overlap
   ${CMAKE_SOURCE_DIR}/Common/derived_types.f90
-  ${CMAKE_SOURCE_DIR}/Common/shp_tr_create.f90
+  ${CMAKE_SOURCE_DIR}/Common/shpc_create.f90
   ${CMAKE_SOURCE_DIR}/Common/write_eddy.f90 write_overlap.f90
   ${CMAKE_CURRENT_LIST_DIR}/test_write_overlap.f90
-  ${CMAKE_SOURCE_DIR}/Common/shp_tr_close.f90 unit_edge_m.f90)
+  ${CMAKE_SOURCE_DIR}/Common/shpc_close.f90 unit_edge_m.f90)
 
 target_link_libraries(test_write_overlap shapelib_03 contour_531 nr_util jumble)
 target_include_directories(test_write_overlap PRIVATE ${fortrangis_INCLUDE_DIR})
@@ -96,13 +96,13 @@ add_executable(test_send_recv
   recv_snapshot.f90 ${CMAKE_SOURCE_DIR}/Common/read_field_indices.f90
   ${CMAKE_SOURCE_DIR}/Common/read_snapshot.f90
   ${CMAKE_SOURCE_DIR}/Common/write_eddy.f90
-  ${CMAKE_SOURCE_DIR}/Common/shp_tr_create.f90
+  ${CMAKE_SOURCE_DIR}/Common/shpc_create.f90
   ${CMAKE_SOURCE_DIR}/Common/read_eddy.f90
   ${CMAKE_CURRENT_LIST_DIR}/write_snapshot.f90
   ${CMAKE_SOURCE_DIR}/Tests/write_extr_map.f90
   ${CMAKE_SOURCE_DIR}/Common/derived_types.f90
-  ${CMAKE_SOURCE_DIR}/Common/shp_tr_open.f90
-  ${CMAKE_SOURCE_DIR}/Common/shp_tr_close.f90)
+  ${CMAKE_SOURCE_DIR}/Common/shpc_open.f90
+  ${CMAKE_SOURCE_DIR}/Common/shpc_close.f90)
 
 target_link_libraries(test_send_recv PRIVATE MPI::MPI_Fortran
   shapelib_03 ezmpi nr_util contour_531 gpc_f NetCDF95::netcdf95
@@ -119,13 +119,13 @@ add_executable(test_get_dispatch_snap
   ${CMAKE_SOURCE_DIR}/Common/read_field_indices.f90
   ${CMAKE_CURRENT_LIST_DIR}/write_snapshot.f90
   ${CMAKE_SOURCE_DIR}/Common/read_snapshot.f90 recv_snapshot.f90
-  ${CMAKE_SOURCE_DIR}/Common/shp_tr_create.f90
+  ${CMAKE_SOURCE_DIR}/Common/shpc_create.f90
   ${CMAKE_SOURCE_DIR}/Common/write_eddy.f90
   ${CMAKE_SOURCE_DIR}/Tests/write_extr_map.f90
   ${CMAKE_SOURCE_DIR}/Common/read_eddy.f90 send_snapshot.f90
   ${CMAKE_SOURCE_DIR}/Common/derived_types.f90
-  ${CMAKE_SOURCE_DIR}/Common/shp_tr_open.f90
-  ${CMAKE_SOURCE_DIR}/Common/shp_tr_close.f90)
+  ${CMAKE_SOURCE_DIR}/Common/shpc_open.f90
+  ${CMAKE_SOURCE_DIR}/Common/shpc_close.f90)
 
 target_link_libraries(test_get_dispatch_snap shapelib_03 jumble
   contour_531 ezmpi NetCDF95::netcdf95 gpc_f nr_util
diff --git a/Overlap/Tests/test_get_dispatch_snap.f90 b/Overlap/Tests/test_get_dispatch_snap.f90
index 388e5269..9aebed2a 100644
--- a/Overlap/Tests/test_get_dispatch_snap.f90
+++ b/Overlap/Tests/test_get_dispatch_snap.f90
@@ -10,19 +10,19 @@ program test_get_dispatch_snap
   use nr_util, only: assert, deg_to_rad
   use shapelib_03, only: dbf_read_attribute_03
 
-  use derived_types, only: snapshot, shp_tr
+  use derived_types, only: snapshot, shpc
   use dispatch_snapshot_m, only: dispatch_snapshot
   use get_snapshot_m, only: get_snapshot
   use send_snapshot_m, only: send_snapshot
-  use shp_tr_close_m, only: shp_tr_close
-  use shp_tr_open_m, only: shp_tr_open
+  use shpc_close_m, only: shpc_close
+  use shpc_open_m, only: shpc_open
   use write_snapshot_m, only: write_snapshot
 
   implicit none
 
-  character(len = :), allocatable:: shp_tr_dir
+  character(len = :), allocatable:: shpc_dir
   type(snapshot) s
-  TYPE(shp_tr) hshp
+  TYPE(shpc) hshp
   integer k_begin, k1, copy, rank, n_proc, k_end, n_dates
   integer unit_isolated, unit_number_eddies
 
@@ -44,7 +44,7 @@ program test_get_dispatch_snap
   integer:: k = - 1
 
   integer, allocatable:: ishape_last(:)
-  ! shape index (0-based) in the triplet of shapefiles of the last
+  ! shape index (0-based) in the collection of shapefiles of the last
   ! shape at a given date index
 
   namelist /main_nml/ corner, step, nlon, nlat, dist_lim, k
@@ -60,8 +60,7 @@ program test_get_dispatch_snap
      call mpi_abort(MPI_Comm_world, errorcode = 1)
   end if
 
-  call get_command_arg_dyn(1, shp_tr_dir, &
-       "Required argument: SHP-triplet-directory")
+  call get_command_arg_dyn(1, shpc_dir, "Required argument: SHPC-directory")
 
   if (rank == 0) then
      write(unit = error_unit, nml = main_nml)
@@ -77,7 +76,7 @@ program test_get_dispatch_snap
           "test_get_dispatch_snap dist_lim")
      copy = merge(dist_lim, 0, periodic)
      call read_column(ishape_last, &
-          file = trim(shp_tr_dir) // "/ishape_last.txt")
+          file = trim(shpc_dir) // "/ishape_last.txt")
      n_dates = size(ishape_last)
      call new_unit(unit_isolated)
      open(unit_isolated, file = "isolated_nodes.txt", status = "replace", &
@@ -96,7 +95,7 @@ program test_get_dispatch_snap
   call ezmpi_bcast(n_dates, root = 0)
   if (rank /= 0) allocate(ishape_last(n_dates))
   call ezmpi_bcast(ishape_last, root = 0)
-  call shp_tr_open(hshp, trim(shp_tr_dir), rank)
+  call shpc_open(hshp, trim(shpc_dir), rank)
   if (rank == 0) call dbf_read_attribute_03(k1, hshp%extremum, hshp%extr_date, &
        ishape = 0)
   call ezmpi_bcast(k1, root = 0)
@@ -110,7 +109,7 @@ program test_get_dispatch_snap
   
   call get_snapshot(s, nlon, nlat, ishape_last, corner * deg_to_rad, &
        step * deg_to_rad, copy, hshp, k1, k, k_end, rank, n_proc, max_delta = 1)
-  CALL shp_tr_close(hshp)
+  CALL shpc_close(hshp)
   call dispatch_snapshot(s, unit_isolated, unit_number_eddies, rank, k_begin, &
        max_delta = 1, k = k)
 
diff --git a/Overlap/Tests/test_overlap.f90 b/Overlap/Tests/test_overlap.f90
index 9ee40908..72fdf9fd 100644
--- a/Overlap/Tests/test_overlap.f90
+++ b/Overlap/Tests/test_overlap.f90
@@ -9,24 +9,24 @@ program test_overlap
   use nr_util, only: deg_to_rad, assert
   use shapelib_03, only: dbf_read_attribute_03
 
-  use derived_types, only: snapshot, shp_tr
+  use derived_types, only: snapshot, shpc
   use overlap_m, only: overlap
   use read_snapshot_m, only: read_snapshot
-  use shp_tr_close_m, only: shp_tr_close
-  use shp_tr_create_m, only: shp_tr_create
-  use shp_tr_open_m, only: shp_tr_open
+  use shpc_close_m, only: shpc_close
+  use shpc_create_m, only: shpc_create
+  use shpc_open_m, only: shpc_open
   use unit_edge_m, only: open_edge_file, unit_edge
   use write_overlap_m, only: init_interpolated_eddy
 
   implicit none
 
-  character(len = :), allocatable:: shp_tr_dir
+  character(len = :), allocatable:: shpc_dir
   integer k1
   integer:: k_test_1 = 20454, k_test_2 = 20455
   integer unit, i, copy, rank, n_proc
   integer, allocatable:: ishape_last(:)
   type(snapshot), allocatable:: flow(:) ! (max_delta + 1)
-  TYPE(shp_tr) hshp
+  TYPE(shpc) hshp
 
   real:: corner_deg(2) = [huge(0.), huge(0.)], corner(2)
   ! longitude and latitude of the corner of the whole grid, in degrees
@@ -56,10 +56,9 @@ program test_overlap
      call mpi_abort(MPI_Comm_world, errorcode = 1)
   end if
 
-  call get_command_arg_dyn(1, shp_tr_dir, &
-       "Required argument: SHP-triplet-directory")
+  call get_command_arg_dyn(1, shpc_dir, "Required argument: SHPC-directory")
   call new_unit(unit)
-  open(unit, file = shp_tr_dir // "/grid_nml.txt", status = "old", &
+  open(unit, file = shpc_dir // "/grid_nml.txt", status = "old", &
        action = "read", position = "rewind")
   read(unit, nml = grid_nml)
   close(unit)
@@ -80,14 +79,14 @@ program test_overlap
   step = step_deg * deg_to_rad
   allocate(flow(max_delta + 1))
   call read_column(ishape_last, &
-       file = trim(shp_tr_dir) // "/ishape_last.txt")
-  call shp_tr_open(hshp, trim(shp_tr_dir), rank = 0)
+       file = trim(shpc_dir) // "/ishape_last.txt")
+  call shpc_open(hshp, trim(shpc_dir), rank = 0)
   call dbf_read_attribute_03(k1, hshp%extremum, hshp%extr_date, ishape = 0)
   call read_snapshot(flow(1), k_test_1, hshp, corner, step, nlon, nlat, copy, &
        k1, ishape_last)
   call read_snapshot(flow(max_delta + 1), k_test_2, hshp, corner, step, nlon, &
        nlat, copy, k1, ishape_last)
-  CALL shp_tr_close(hshp)
+  CALL shpc_close(hshp)
   print *, "Enter flow(1)%list_vis%delta_out (array with ", &
        flow(1)%number_vis_extr, " values):"
   read *, flow(1)%list_vis%delta_out
@@ -103,13 +102,13 @@ program test_overlap
        // '"successor eddy subscript"'
   write(unit_edge, fmt = *) "k1 i1 k2 i2 weight"
 
-  call shp_tr_create(hshp, shp_tr_dir = "SHPC")
+  call shpc_create(hshp, shpc_dir = "SHPC")
   call init_interpolated_eddy
   call overlap(flow, nlon, nlat, periodic, dist_lim, hshp, k = k_test_2, &
        delta = max_delta, j = max_delta + 1)
   close(unit_edge)
   print *, 'Created file "edgelist.csv".'
-  CALL shp_tr_close(hshp)
+  CALL shpc_close(hshp)
   print *, 'Created shapefiles for interpolated eddies in SHPC.'
 
   print *, k_test_1, ":"
diff --git a/Overlap/Tests/test_read_eddy.f90 b/Overlap/Tests/test_read_eddy.f90
index d3d628b4..0f84f54a 100644
--- a/Overlap/Tests/test_read_eddy.f90
+++ b/Overlap/Tests/test_read_eddy.f90
@@ -3,29 +3,29 @@ program test_read_eddy
   ! Libraries:
   use mpi_f08, only: mpi_init, mpi_finalize
 
-  use derived_types, only: eddy, shp_tr
+  use derived_types, only: eddy, shpc
   use read_eddy_m, only: read_eddy
-  use shp_tr_close_m, only: shp_tr_close
-  use shp_tr_create_m, only: shp_tr_create
-  use shp_tr_open_m, only: shp_tr_open
+  use shpc_close_m, only: shpc_close
+  use shpc_create_m, only: shpc_create
+  use shpc_open_m, only: shpc_open
   use write_eddy_m, only: write_eddy
 
   implicit none
 
   type(eddy) e
   integer k, i
-  TYPE(shp_tr) hshp
+  TYPE(shpc) hshp
 
   !-------------------------------------------------------------------------
 
   call mpi_init
-  call shp_tr_open(hshp, "SHPC_old", rank = 0)
+  call shpc_open(hshp, "SHPC_old", rank = 0)
   call read_eddy(e, k, i, hshp, ishape = 0)
-  CALL shp_tr_close(hshp)
+  CALL shpc_close(hshp)
 
-  call shp_tr_create(hshp, shp_tr_dir = "SHPC")
+  call shpc_create(hshp, shpc_dir = "SHPC")
   call write_eddy(e, hshp, k, i)
-  CALL shp_tr_close(hshp)
+  CALL shpc_close(hshp)
   print *, 'Created shapefiles in SHPC.'
   call mpi_finalize
 
diff --git a/Overlap/Tests/test_read_snapshot.f90 b/Overlap/Tests/test_read_snapshot.f90
index 1c04ee32..81aac67f 100644
--- a/Overlap/Tests/test_read_snapshot.f90
+++ b/Overlap/Tests/test_read_snapshot.f90
@@ -8,17 +8,17 @@ program test_read_snapshot
   use nr_util, only: deg_to_rad, assert
   use shapelib_03, only: dbf_read_attribute_03
 
-  use derived_types, only: snapshot, shp_tr
+  use derived_types, only: snapshot, shpc
   use read_snapshot_m, only: read_snapshot
-  use shp_tr_close_m, only: shp_tr_close
-  use shp_tr_open_m, only: shp_tr_open
+  use shpc_close_m, only: shpc_close
+  use shpc_open_m, only: shpc_open
   use write_snapshot_m, only: write_snapshot
 
   implicit none
 
   character(len = :), allocatable:: shpc_dir
   type(snapshot) s
-  TYPE(shp_tr) hshp
+  TYPE(shpc) hshp
   integer k1, copy, unit, ishape_last
 
   real:: corner_deg(2) = [0.125, - 59.875]
@@ -68,11 +68,11 @@ program test_read_snapshot
   read(unit, fmt = *) ishape_last ! first date
   close(unit)
 
-  call shp_tr_open(hshp, trim(shpc_dir), rank = 0)
+  call shpc_open(hshp, trim(shpc_dir), rank = 0)
   call dbf_read_attribute_03(k1, hshp%extremum, hshp%extr_date, ishape = 0)
   call read_snapshot(s, k1, hshp, corner_deg * deg_to_rad, &
        step_deg * deg_to_rad, nlon, nlat, copy, k1, [ishape_last])
-  CALL shp_tr_close(hshp)
+  CALL shpc_close(hshp)
 
   call write_snapshot(s, corner_deg, step_deg, nlon, nlat, copy, k1)
   call mpi_finalize
diff --git a/Overlap/Tests/test_send_recv.f90 b/Overlap/Tests/test_send_recv.f90
index fd1de1da..a7a4f0be 100644
--- a/Overlap/Tests/test_send_recv.f90
+++ b/Overlap/Tests/test_send_recv.f90
@@ -11,12 +11,12 @@ program test_send_recv
   use nr_util, only: deg_to_rad, assert
   use shapelib_03, only: dbf_read_attribute_03
 
-  use derived_types, only: snapshot, shp_tr
+  use derived_types, only: snapshot, shpc
   use read_snapshot_m, only: read_snapshot
   use recv_snapshot_m, only: recv_snapshot
   use send_snapshot_m, only: send_snapshot
-  use shp_tr_close_m, only: shp_tr_close
-  use shp_tr_open_m, only: shp_tr_open
+  use shpc_close_m, only: shpc_close
+  use shpc_open_m, only: shpc_open
   use write_eddy_m, only: write_eddy
   use write_snapshot_m, only: write_snapshot
 
@@ -41,10 +41,10 @@ program test_send_recv
   namelist /main_nml/ dist_lim
   namelist /grid_nml/ corner_deg, step_deg, nlon, nlat
   logical periodic ! grid is periodic in longitude
-  TYPE(shp_tr) hshp
+  TYPE(shpc) hshp
 
   integer, allocatable:: ishape_last(:)
-  ! shape index (0-based) in the triplet of shapefiles of the last
+  ! shape index (0-based) in the collection of shapefiles of the last
   ! shape at a given date index
 
   !---------------------------------------------------------------------
@@ -98,13 +98,13 @@ program test_send_recv
   if (rank == 1) allocate(ishape_last(n_dates))
   call ezmpi_bcast(ishape_last, root = 0)
 
-  call shp_tr_open(hshp, trim(shpc_dir), rank)
+  call shpc_open(hshp, trim(shpc_dir), rank)
   if (rank == 0) call dbf_read_attribute_03(k1, hshp%extremum, hshp%extr_date, &
        ishape = 0)
   call ezmpi_bcast(k1, root = 0)
   if (rank == 1) call read_snapshot(s, k1, hshp, corner_deg * deg_to_rad, &
        step_deg * deg_to_rad, nlon, nlat, copy, k1, ishape_last)
-  CALL shp_tr_close(hshp)
+  CALL shpc_close(hshp)
 
   if (rank == 1) then
      call send_snapshot(s, dest = 0, tag = k1)
diff --git a/Overlap/Tests/test_write_overlap.f90 b/Overlap/Tests/test_write_overlap.f90
index 86b9bf0f..3f1ae908 100644
--- a/Overlap/Tests/test_write_overlap.f90
+++ b/Overlap/Tests/test_write_overlap.f90
@@ -2,9 +2,9 @@ program test_write_overlap
 
   use, intrinsic:: ISO_FORTRAN_ENV
 
-  use derived_types, only: shp_tr
-  use shp_tr_close_m, only: shp_tr_close
-  use shp_tr_create_m, only: shp_tr_create
+  use derived_types, only: shpc
+  use shpc_close_m, only: shpc_close
+  use shpc_create_m, only: shpc_create
   use unit_edge_m, only: open_edge_file, unit_edge
   use write_overlap_m, only: write_overlap, init_interpolated_eddy
 
@@ -14,7 +14,7 @@ program test_write_overlap
   integer:: k = 2, delta = 1, m = 0
   real:: coord_extr_1(2) = [0., 0.], coord_extr_2(2) = [0., 0.] ! in rad
   real:: ssh_extr_1 = 0., ssh_extr_2 = 0.
-  TYPE(shp_tr) hshp
+  TYPE(shpc) hshp
   namelist /main_nml/ k, delta, m, coord_extr_1, ssh_extr_1, coord_extr_2, &
        ssh_extr_2
 
@@ -33,7 +33,7 @@ program test_write_overlap
        // '"successor eddy subscript"'
   write(unit_edge, fmt = *) "k1 i1 k2 i2 weight"
   
-  call shp_tr_create(hshp, shp_tr_dir = "SHPC")
+  call shpc_create(hshp, shpc_dir = "SHPC")
   call init_interpolated_eddy
   call write_overlap(hshp, k, delta, i1 = 1, i2 = 2, m = m, &
        i_interp = 10 + [(j_interp, j_interp = 1, delta - 1)], &
@@ -41,7 +41,7 @@ program test_write_overlap
        coord_extr_2 = coord_extr_2, ssh_extr_2 = ssh_extr_2, w = 0.)
   close(unit_edge)
   print *, 'Created file "edgelist.csv".'
-  CALL shp_tr_close(hshp)
+  CALL shpc_close(hshp)
   print *, 'Created shapefiles in SHPC.'
 
 end program test_write_overlap
diff --git a/Overlap/Tests/write_snapshot.f90 b/Overlap/Tests/write_snapshot.f90
index 01cdb108..9f22fcf5 100644
--- a/Overlap/Tests/write_snapshot.f90
+++ b/Overlap/Tests/write_snapshot.f90
@@ -9,9 +9,9 @@ contains
     ! Libraries:
     use nr_util, only: arth
 
-    use derived_types, only: snapshot, shp_tr
-    use shp_tr_close_m, only: shp_tr_close
-    use shp_tr_create_m, only: shp_tr_create
+    use derived_types, only: snapshot, shpc
+    use shpc_close_m, only: shpc_close
+    use shpc_create_m, only: shpc_create
     use write_eddy_m, only: write_eddy
     use write_extr_map_m, only: write_extr_map
 
@@ -30,19 +30,19 @@ contains
     integer, intent(in):: copy, k
 
     ! Local:
-    TYPE(shp_tr) hshp
+    TYPE(shpc) hshp
     integer i
 
     !-----------------------------------------------------------------
 
-    call shp_tr_create(hshp, shp_tr_dir = "SHPC")
+    call shpc_create(hshp, shpc_dir = "SHPC")
 
     ! Write snapshot:
     do i = 1, s%number_vis_extr
        call write_eddy(s%list_vis(i), hshp, k, i)
     end do
 
-    CALL shp_tr_close(hshp)
+    CALL shpc_close(hshp)
     print *, 'Created shapefiles in SHPC.'
 
     print *, "Number of extrema:", s%number_vis_extr
diff --git a/Overlap/eddy_graph.f90 b/Overlap/eddy_graph.f90
index 927ef7c5..996eb050 100644
--- a/Overlap/eddy_graph.f90
+++ b/Overlap/eddy_graph.f90
@@ -10,14 +10,14 @@ program eddy_graph
   use nr_util, only: assert, deg_to_rad
   use shapelib_03, only: dbf_read_attribute_03
 
-  use derived_types, only: snapshot, shp_tr
+  use derived_types, only: snapshot, shpc
   use dispatch_snapshot_m, only: dispatch_snapshot
   use get_snapshot_m, only: get_snapshot
   use overlap_m, only: overlap
   use unit_edge_m, only: open_edge_file, unit_edge
-  use shp_tr_open_m, only: shp_tr_open
-  use shp_tr_close_m, only: shp_tr_close
-  use shp_tr_create_m, only: shp_tr_create
+  use shpc_open_m, only: shpc_open
+  use shpc_close_m, only: shpc_close
+  use shpc_create_m, only: shpc_create
   use write_overlap_m, only: init_interpolated_eddy
   
   implicit none
@@ -56,8 +56,8 @@ program eddy_graph
   ! shape at a given date index
 
   integer unit_isolated, unit_number_eddies, unit
-  TYPE(shp_tr) hshp
-  TYPE(shp_tr) hshp_interp ! for interpolated eddies  
+  TYPE(shpc) hshp
+  TYPE(shpc) hshp_interp ! for interpolated eddies
   type(snapshot), allocatable:: flow(:)
   character(len = 30) file
 
@@ -115,7 +115,7 @@ program eddy_graph
   if (rank /= 0) allocate(ishape_last(n_dates))
   call ezmpi_bcast(ishape_last, root = 0)
 
-  call shp_tr_open(hshp, trim(shpc_dir), rank)
+  call shpc_open(hshp, trim(shpc_dir), rank)
   if (rank == 0) call dbf_read_attribute_03(k1, hshp%extremum, hshp%extr_date, &
        ishape = 0)
   call ezmpi_bcast(k1, root = 0)
@@ -135,7 +135,7 @@ program eddy_graph
   ! We do not write the title line. That will be handled by eddy_graph.sh.
 
   write(unit = file, fmt = '("SHPC_", i0)') rank
-  call shp_tr_create(hshp_interp, shp_tr_dir = trim(file))
+  call shpc_create(hshp_interp, shpc_dir = trim(file))
   call init_interpolated_eddy
 
   k_begin = k1 + (rank * n_dates) / n_proc
@@ -203,8 +203,8 @@ program eddy_graph
 
   ! 5. Back matter
 
-  CALL shp_tr_close(hshp_interp)
-  CALL shp_tr_close(hshp)
+  CALL shpc_close(hshp_interp)
+  CALL shpc_close(hshp)
   close(unit_isolated)
   close(unit_number_eddies)
   close(unit_edge)
diff --git a/Overlap/eddy_graph_in.sh b/Overlap/eddy_graph_in.sh
index c38bb357..dcd7096f 100755
--- a/Overlap/eddy_graph_in.sh
+++ b/Overlap/eddy_graph_in.sh
@@ -7,7 +7,7 @@
 
 if (($# != 2))
 then
-    echo "Usage: eddy_graph.sh N_PROC INPUT_SHP_TRIPLET"
+    echo "Usage: eddy_graph.sh N_PROC INPUT_SHPC"
     exit 1
 fi
 
diff --git a/Overlap/get_snapshot.f90 b/Overlap/get_snapshot.f90
index 518a2d25..fc04c173 100644
--- a/Overlap/get_snapshot.f90
+++ b/Overlap/get_snapshot.f90
@@ -7,7 +7,7 @@ contains
   subroutine get_snapshot(s, nlon, nlat, ishape_last, corner, step, copy, &
        hshp, k1, k, k_end, rank, n_proc, max_delta)
 
-    use derived_types, only: snapshot, shp_tr
+    use derived_types, only: snapshot, shpc
     use read_snapshot_m, only: read_snapshot
     use recv_snapshot_m, only: recv_snapshot
 
@@ -15,7 +15,7 @@ contains
     integer, intent(in):: nlon, nlat
     
     integer, intent(in):: ishape_last(:)
-    ! shape index (0-based) in the triplet of shapefiles of the last
+    ! shape index (0-based) in the collection of shapefiles of the last
     ! shape at a given date index
 
     real, intent(in):: corner(:) ! (2) longitude and latitude of the
@@ -23,8 +23,8 @@ contains
 
     real, intent(in):: step(:) ! (2) longitude and latitude steps, in rad
     integer, intent(in):: copy
-    TYPE(shp_tr), intent(in):: hshp
-    integer, intent(in):: k1 ! first date index in the triplet of shapefiles
+    TYPE(shpc), intent(in):: hshp
+    integer, intent(in):: k1 ! first date index in the collection of shapefiles
     integer, intent(in):: k ! date index
     integer, intent(in):: k_end ! last date index analyzed by this MPI process
     integer, intent(in):: rank ! of MPI process
diff --git a/Overlap/overlap.f90 b/Overlap/overlap.f90
index 9c1aec61..da2433e5 100644
--- a/Overlap/overlap.f90
+++ b/Overlap/overlap.f90
@@ -19,7 +19,7 @@ contains
     use nr_util, only: twopi
 
     use candidate_overlap_m, only: candidate_overlap
-    use derived_types, only: snapshot, shp_tr
+    use derived_types, only: snapshot, shpc
     use spher_polygon_area_m, only: spher_polygon_area
     use spher_polyline_area_m, only: spher_polyline_area
     use weight_m, only: weight
@@ -33,8 +33,8 @@ contains
     ! We look for an overlapping eddy at dist_lim (in grid points) of
     ! the extremum of a given eddy.
 
-    ! Triplet of shapefiles to which any interpolated eddy will be written:
-    TYPE(shp_tr), intent(in):: hshp_interp
+    ! Collection of shapefiles to which any interpolated eddy will be written:
+    TYPE(shpc), intent(in):: hshp_interp
 
     integer, intent(in):: k ! date index
     integer, intent(in):: delta ! between 1 and max_delta
diff --git a/Overlap/write_overlap.f90 b/Overlap/write_overlap.f90
index 6df325e8..5d5a793c 100644
--- a/Overlap/write_overlap.f90
+++ b/Overlap/write_overlap.f90
@@ -18,11 +18,11 @@ contains
     ! Libraries:
     use nr_util, only: twopi
 
-    use derived_types, only: shp_tr
+    use derived_types, only: shpc
     use unit_edge_m, only: unit_edge
     use write_eddy_m, only: write_eddy
 
-    TYPE(shp_tr), intent(in):: hshp_interp
+    TYPE(shpc), intent(in):: hshp_interp
     integer, intent(in):: k ! date index
     integer, intent(in):: delta, i1, i2, m
     integer, intent(in):: i_interp(:) ! (delta - 1)
-- 
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