[io][utils] Add function to read nexus file with components

darfix/io/utils.py

@@ -72,6 +72,23 @@ def advancement_display(iteration, total, prefix='', suffix='', decimals=1, leng
         print()
 
 
+def read_process(h5_file):
+    with h5py.File(h5_file, "r") as nx:
+        # find the default NXentry group
+        nx_entry = nx[nx.attrs["default"]]
+        # find the default NXdata group
+        nx_process = nx_entry["process_1"]
+        input_data = nx_process["input"]
+        dimensions = {}
+        for key in input_data.keys():
+            dimensions[key] = numpy.array(list(input_data[key]))
+        results = nx_process["results"]
+        components = numpy.array(list(results["components"]))
+        W = numpy.array(list(results["W"]))
+
+    return dimensions, components, W
+
+
 def write_process(h5_file, entry, dimensions, W, data, processing_order,
                   data_path='/', overwrite=True):
     """