Further forward violin plot kwargs.

libcodonusage/libcodonusage.py

@@ -1230,7 +1230,7 @@ def violin_usage_vertical(
 def violin_usage_by_clusters(usage_with_clusters, aa,  # pylint: disable=C0103
                              ylabel_template,
                              cluster_level_template="cluster_{aa}",
-                             vertical=False):
+                             vertical=False, **violin_kwargs):
     """
     Plot a series of violin plots for each cluster of genes.
 
@@ -1252,16 +1252,18 @@ def violin_usage_by_clusters(usage_with_clusters, aa,  # pylint: disable=C0103
             nrows=clusters.ngroups,
             figsize=(18, 6 * clusters.ngroups))
     for ((cluster, usage_table), axis) in zip(clusters, axes):
+        kwargs = {"axis": axis}
+        kwargs.update(violin_kwargs)
         if vertical:
             violin_usage_vertical(
                 usage_table, "codon",
                 ylabel_template.format(aa=aa, cluster=cluster),
-                axis=axis)
+                **kwargs)
         else:
             violin_usage(
                 usage_table, "codon",
                 ylabel_template.format(aa=aa, cluster=cluster),
-                axis=axis)
+                **kwargs)
 
 
 # Based on
@@ -1280,7 +1282,7 @@ def adjacent_values(q0, q1, q3, q4):  # pylint: disable=C0103
 
 
 def violin_with_thresh(data, thresh, ylabel,
-                       facecolor="grey", axis=None):
+                       facecolor="grey", axis=None, **violin_kwargs):
     """
     Draw a violin plot from *data* with a horizontal line at value *thresh*.
 
@@ -1291,7 +1293,9 @@ def violin_with_thresh(data, thresh, ylabel,
     """
     if axis is None:
         _, axis = plt.subplots(figsize=(2, 3.5))
-    violin_parts = axis.violinplot(data, showextrema=False)
+    kwargs = {"showextrema": False}
+    kwargs.update(violin_kwargs)
+    violin_parts = axis.violinplot(data, **kwargs)
     # https://stackoverflow.com/a/26291582/1878788
     [body] = violin_parts["bodies"]
     body.set_facecolor(facecolor)