Formatting and docstring changes

skimage/graph/graph_cut.py

@@ -3,7 +3,7 @@ import numpy as np
 
 
 def threshold_cut(label_image, rag, thresh):
-    """Combines regions seperated by weight less than threshold.
+    """Combine regions seperated by weight less than threshold.
 
     Given an image's labels and its RAG, outputs new labels by
     combining regions whose nodes are seperated by a weight less
@@ -46,7 +46,7 @@ def threshold_cut(label_image, rag, thresh):
 
     comps = nx.connected_components(rag)
 
-    map_array = np.arange(label_image.max()+1, dtype=np.int)
+    map_array = np.arange(label_image.max() + 1, dtype=np.int)
     for i, nodes in enumerate(comps):
         for node in nodes:
             for label in rag.node[node]['labels']:

skimage/graph/rag.py

@@ -96,10 +96,11 @@ def rag_meancolor(image, label_image, connectivity=2):
 
     Parameters
     ----------
-    image : (width, height, 3) or (width, height, depth, 3) ndarray
+    image : ndarray
         Input image.
-    label_image : (width, height) or (width, height, depth) ndarray
-        The array with labels.
+    label_image : ndarray
+        The array with labels. This should have one dimention lesser than
+        `image`
     connectivity : float, optional
         Pixels with a squared distance less than `connectivity`from each other
         are considered adjacent.