Names of NetCDF variables in AVISO files are changed: u to ugos, v to

vgos, lon to longitude, lat to latitude.

Add a test for successive_overlap with periodic grid.

Add snapshot for region 4 at a different date, in input files, for a
new test of successive_overlap.

Analysis/plot_snapshot.py

@@ -58,8 +58,8 @@ else:
     m_s_iterShapes = reader_m_s.iterShapes()
 
 with netCDF4.Dataset("h.nc") as f:
-    longitude = f.variables["lon"][:]
-    latitude = f.variables["lat"][:]
+    longitude = f.variables["longitude"][:]
+    latitude = f.variables["latitude"][:]
     
 if args.window:
     l = input("llcrnrlon, llcrnrlat, urcrnrlon, urcrnrlat = ? ")\

Tests/Input/Region_4/2006_01_02/extraction_eddies_stdout.txt

+ &MAIN_NML
+ MIN_AMP = 1.0000000E-03  ,
+ MAX_RADIUS      = 2*20,
+ MIN_RADIUS      = 25.00000       
+ /
+ periodic =  F
+ Number of extrema: 6
+ Created shapefile "extremum".
+ Created shapefile "outermost_contour".
+ Created shapefile "max_speed_contour".