Add argument slice to `inst_eddies_Aviso.py`

So the script can write to a slice other than 0.

Inst_eddies/Tests/long_tests.json

@@ -83,7 +83,7 @@
 	    "$build_dir/Inst_eddies/inst_eddies_Aviso.py",
 	    "-b", "1.625", "15.625", "-38.375", "-30.375",
 	    "$large_input_dir/dt_global_allsat_phy_l4_20060101_20210726.nc",
-	    "--template=dt_global_allsat_phy_l4_%Y%m%d_20210726.nc", "-l",
+	    "0", "--template=dt_global_allsat_phy_l4_%Y%m%d_20210726.nc", "-l",
 	    "20060115"
 	]
     },
@@ -106,7 +106,7 @@
 	[
             "$build_dir/Inst_eddies/inst_eddies_Aviso.py",
 	    "$large_input_dir/dataset-duacs-global-allsat-phy-2020-01-31.nc",
-	    "--template=dataset-duacs-global-allsat-phy-%Y-%m-%d.nc", "-l",
+	    "0", "--template=dataset-duacs-global-allsat-phy-%Y-%m-%d.nc", "-l",
 	    "20200202"
         ],
 	"description":
@@ -121,7 +121,7 @@
 	    "$build_dir/Inst_eddies/inst_eddies_Aviso.py",
 	    "--template=dt_global_allsat_phy_l4_%Y%m%d_20210726.nc",
 	    "--last_date=1993-03-31", "--bbox", "20", "30", "35", "42",
-	    "$large_input_dir/dt_global_allsat_phy_l4_19930101_20210726.nc"
+	    "$large_input_dir/dt_global_allsat_phy_l4_19930101_20210726.nc", "0"
 	],
         "create_file": ["config_nml.txt", "&config_nml /\n"]
     },
@@ -134,7 +134,7 @@
 	    "--template=dt_global_allsat_phy_l4_%Y%m%d_20210726.nc",
 	    "--last_date=2006-01-15", "--bbox", "0.125", "29.875", "-59.875",
 	    "-15.125",
-	    "$large_input_dir/dt_global_allsat_phy_l4_20060101_20210726.nc"
+	    "$large_input_dir/dt_global_allsat_phy_l4_20060101_20210726.nc", "0"
 	],
         "create_file": ["config_nml.txt", "&config_nml /\n"]
     }

Inst_eddies/Tests/short_tests.json

@@ -420,7 +420,8 @@
 	[
             "$build_dir/Inst_eddies/inst_eddies_Aviso.py",
 	    "--template=huv_region_1_%Y_%m_%d.nc", "-l", "2006-01-04",
-	    "$src_dir/Inst_eddies/Tests/Input/Region_1/huv_region_1_2006_01_01.nc"
+	    "$src_dir/Inst_eddies/Tests/Input/Region_1/huv_region_1_2006_01_01.nc",
+	    "0"
         ],
 	"input": "20454\n"
     },
@@ -521,7 +522,7 @@
 	    "--template=dt_global_allsat_phy_l4_%Y%m%d_20210726.nc",
 	    "--last_date=2006-01-15",
 	    "--bbox", "16.125", "20.875", "-38.875", "-34.125",
-	    "$large_input_dir/dt_global_allsat_phy_l4_20060101_20210726.nc"
+	    "$large_input_dir/dt_global_allsat_phy_l4_20060101_20210726.nc", "0"
 	],
         "create_file": ["config_nml.txt", "&config_nml /\n"]
     }

Inst_eddies/inst_eddies_Aviso.py

@@ -26,6 +26,8 @@ argparser = argparse.ArgumentParser()
 argparser.add_argument("first_file",
                        help = "NetCDF file containing SSH and velocity at a "
                        "single date")
+argparser.add_argument("slice", type = int,
+                       help = "slice number to create")
 argparser.add_argument("--template",
                        help = "template of basename with date.strftime format "
                        "codes, only used for several dates")
@@ -59,4 +61,4 @@ else:
 inst_eddies.loop_inst_eddies(filename_generator(args.first_file, first_date,
                                                 last_date, args.template,
                                                 dirname), args.bbox, d,
-                             my_slice = 0)
+                             my_slice = args.slice)