Added fix and test for write_scan_raw with omited low values for rowIndex or columnIndex

src/pye57/e57.py

@@ -376,9 +376,9 @@ def write_scan_raw(self, data: Dict, *, name=None, rotation=None, translation=No
             max_row = np.max(data["rowIndex"])
             min_col = np.min(data["columnIndex"])
             max_col = np.max(data["columnIndex"])
-            points_prototype.set("rowIndex", libe57.IntegerNode(self.image_file, 0, min_row, max_row))
+            points_prototype.set("rowIndex", libe57.IntegerNode(self.image_file, min_row, min_row, max_row))
             field_names.append("rowIndex")
-            points_prototype.set("columnIndex", libe57.IntegerNode(self.image_file, 0, min_col, max_col))
+            points_prototype.set("columnIndex", libe57.IntegerNode(self.image_file, min_col, min_col, max_col))
             field_names.append("columnIndex")
 
         if "cartesianInvalidState" in data:

tests/test_main.py

@@ -419,3 +419,24 @@ def test_clone_e57(e57_with_data_and_images_path, temp_e57_write):
 
     in_image.close()
     out_image.close()
+
+
+def test_write_e57_with_rowindex_and_columnindex_omiting_low_values(temp_e57_write):
+
+    with pye57.E57(temp_e57_write, mode='w') as e57:
+        # set some test points with missing row and column 0 (so np.min of it in write_scan_raw is larger than 0)
+        data_raw = {}
+        data_raw["cartesianX"] = np.array([0, 1, 2, 3]).astype(float)
+        data_raw["cartesianY"] = np.array([0, 1, 2, 3]).astype(float)
+        data_raw["cartesianZ"] = np.array([0, 1, 2, 3]).astype(float)
+        data_raw["rowIndex"] = np.array([1, 1, 2, 3])
+        data_raw["columnIndex"] = np.array([1, 1, 2, 3])
+
+        try:
+            # the next line will throw without the suggested fix
+            e57.write_scan_raw(data_raw, name='test_output_with_row_and_column')
+        except pye57.libe57.E57Exception as ex:
+            print(ex)
+            assert False
+
+    assert os.path.isfile(temp_e57_write)