add numpy mean and median vector functionsexamples

snippets/math/mean_vector_from_list.py

@@ -0,0 +1,13 @@
+from numpy import as np
+
+def mean_vector(vec_list):
+    '''Get mean vector from a list of vectors
+    e.g: mean_vector([ob.matrix_world @ co for co in ob_coordinates])
+    '''
+    return Vector(np.mean(vec_list, axis=0))
+
+    ## Without numpy
+    # n = Vector()
+    # for v in vec_list:
+    #     n += v
+    # return n / len(vec_list)

snippets/math/median_vector_from_list.py

@@ -0,0 +1,7 @@
+from numpy import as np
+
+def median_vector(vec_list):
+    '''Get median vector from a list of vectors
+    e.g: median_vector([ob.matrix_world @ co for co in ob_coordinates])
+    '''
+    return Vector(np.median(vec_list, axis=0))