import from Neper

python/damask/_grid.py

@@ -249,6 +249,30 @@ class Grid:
         return Grid(material.reshape(cells,order='F'),size,origin,comments)
 
 
+    @staticmethod
+    def load_Neper(fname):
+        """
+        Load from Neper VTK file.
+
+        Parameters
+        ----------
+        fname : str, pathlib.Path, or file handle
+            Geometry file to read.
+
+        Returns
+        -------
+        loaded : damask.Grid
+            Grid-based geometry from file.
+
+        """
+        v = VTK.load(fname,'vtkImageData')
+        cells = np.array(v.vtk_data.GetDimensions())-1
+        bbox  = np.array(v.vtk_data.GetBounds()).reshape(3,2).T
+
+        return Grid(v.get('MaterialId').reshape(cells,order='F') - 1, bbox[1] - bbox[0], bbox[0],
+                    util.execution_stamp('Grid','load_Neper'))
+
+
     @staticmethod
     def load_DREAM3D(fname,
                      feature_IDs=None,cell_data=None,

python/damask/_vtk.py

@@ -199,7 +199,7 @@ class VTK:
                 raise TypeError('Dataset type for *.vtk file not given.')
             elif dataset_type.lower().endswith(('imagedata','image_data')):
                 reader.Update()
-                vtk_data = reader.GetImageDataOutput()
+                vtk_data = reader.GetStructuredPointsOutput()
             elif dataset_type.lower().endswith(('rectilineargrid','rectilinear_grid')):
                 reader.Update()
                 vtk_data = reader.GetRectilinearGridOutput()