Adds axis.labelAngle functionality

Author: palnabarun

mplaltair/_axis.py

@@ -30,6 +30,19 @@ def _set_label_visibility(ax, enc, spec):
     elif enc == 'y':
         ax.tick_param(labelleft=labels, labelright=labels)
 
+def _set_label_angle(ax, enc, spec):
+    label_angle = spec.get('axis').get('labelAngle')
+    
+    if label_angle is None:
+        return
+    
+    if enc == 'x':
+        for label in ax.get_xticklables():
+            label.set_rotation(-1*label_angle)
+    elif enc == 'y':
+        for label in ax.get_yticklables():
+            label.set_rotation(-1*label_angle)
+
 def _set_ticks(ax, enc, spec):
     pass
 
@@ -62,5 +75,6 @@ def convert_axis(ax, chart):
         if enc_channel in ['x', 'y']:
             _set_title(ax, enc_channel, enc_spec)
             _set_label_visibility(ax, enc_channel, enc_spec)
+            _set_label_angle(ax, enc_channel, enc_spec)
             _set_ticks(ax, enc_channel, enc_spec)
             _set_locators(ax, enc_channel, enc_spec)