Moved axes_to_array into general utilities

openflexure_microscope/utilities.py

@@ -0,0 +1,18 @@
+import copy
+
+def axes_to_array(coordinate_dictionary, axis_keys=['x', 'y', 'z'], base_array=None):
+    """Takes key-value pairs of a JSON value, and maps onto an array"""
+    # If no base array is given
+    if not base_array:
+        # Create an array of zeros
+        base_array = [0]*len(axis_keys)
+    else:
+        # Create a copy of the passed base_array
+        base_array = copy.copy(base_array)
+
+    # Do the mapping
+    for axis, key in enumerate(axis_keys):
+        if key in coordinate_dictionary:
+            base_array[axis] = coordinate_dictionary[key]
+
+    return base_array