Add optional parameter for horizontal ratio

wordfreq.py

@@ -60,6 +60,9 @@ def main():
             help = "the width of canvas")
     parser.add_argument("-y", "--height", type = int, default = 200,
             help = "the height of canvas")
+    parser.add_argument("-r", "--prefer-horizontal", type = float,
+            default = 0.9,
+            help = "the ratio of times to try horizontal fitting")
     args = parser.parse_args()
 
     if not args.jobs is None:
@@ -84,12 +87,14 @@ def main():
         img = Image.open(args.mask).resize((args.width, args.height))
         mask = np.array(img)
 
-    wc = WordCloud(font_path = args.fontpath,
+    wordcloud = WordCloud(font_path = args.fontpath,
             mask = mask,
             contour_width = args.contour,
             contour_color = "steelblue",
             width = args.width,
-            height = args.height).generate_from_frequencies(c)
+            height = args.height,
+            prefer_horizontal = args.prefer_horizontal)
+    wc = wordcloud.generate_from_frequencies(c)
     wc.to_image().save(args.output)
 
 if __name__ == "__main__":