Added script to convert from roff to grdecl ascii format

tests/jobs/localisation/example_case/scripts/roff_to_grdecl.py

@@ -0,0 +1,51 @@
+#!/usr/bin/env python
+"""
+Script converting a grid parameter file from ROFF to GRDECL
+"""
+
+import sys
+from pathlib import PurePath
+
+import xtgeo
+
+
+def main(argv):
+    """
+    Convert a grid parameter file from ROFF to GRDECL
+    and can also take as input a GRDECL file and write
+    to another GRDECL file with fixed format
+    """
+    input_file = argv[1]
+    output_file = argv[2]
+    grid_file = argv[3]
+    param_name = "FIELDPAR"
+    grid_obj = xtgeo.grid_from_file(grid_file, fformat="egrid")
+    # Check extension to find input format
+    suffix = PurePath(input_file).suffix
+    if suffix.upper() == ".ROFF":
+        print(f"Read file: {input_file} in ROFF format")
+        field_obj = xtgeo.gridproperty_from_file(
+            input_file, fformat="roff", name=param_name, grid=grid_obj
+        )
+        print(f"Write file: {output_file} in GRDECL format")
+        field_obj.to_file(output_file, fformat="grdecl", fmt="%8.4f")
+    elif suffix.upper() == ".GRDECL":
+        # Ensure the grdecl file use a fixed format for the values
+        # to more easily compare it with a reference
+        print(f"Read file: {input_file} in GRDECL format")
+        field_obj = xtgeo.gridproperty_from_file(
+            input_file, fformat="grdecl", name=param_name, grid=grid_obj
+        )
+        print(f"Write file: {output_file} in GRDECL format")
+        field_obj.to_file(output_file, fformat="grdecl", fmt="%8.4f")
+
+
+if __name__ == "__main__":
+    args = sys.argv
+    if len(args) < 4:
+        print(
+            "Usage: roff_to_grdecl.py  <input_roff_file or input grdecl_file> "
+            "<output_grdecl_file>  <grid_file EGRID format> "
+        )
+    else:
+        main(args)