Merge pull request #1864 from leejjoon/fix-legend-expand

fix legend w/ 'expand' mode which fails for a single item.
matplotlib · Apr 1, 2013 · bf81d2b · bf81d2b
2 parents b062b50 + eb3ecb2
commit bf81d2b
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diff --git a/lib/matplotlib/offsetbox.py b/lib/matplotlib/offsetbox.py
@@ -73,7 +73,10 @@ def _get_packed_offsets(wd_list, total, sep, mode="fixed"):
         return total, offsets
 
     elif mode == "expand":
-        sep = (total - sum(w_list)) / (len(w_list) - 1.)
+        if len(w_list) > 1:
+            sep = (total - sum(w_list)) / (len(w_list) - 1.)
+        else:
+            sep = 0.
         offsets_ = np.add.accumulate([0] + [w + sep for w in w_list])
         offsets = offsets_[:-1]
 

diff --git a/lib/matplotlib/tests/baseline_images/test_legend/legend_expand.pdf b/lib/matplotlib/tests/baseline_images/test_legend/legend_expand.pdf
diff --git a/lib/matplotlib/tests/baseline_images/test_legend/legend_expand.png b/lib/matplotlib/tests/baseline_images/test_legend/legend_expand.png