support empty dash seq for solid linestyle

jdh2358 · jdh2358 · commit 451a015a2677 · 2006-12-20T18:29:18.000Z
svn path=/trunk/matplotlib/; revision=2944
diff --git a/lib/matplotlib/colors.py b/lib/matplotlib/colors.py
@@ -577,6 +577,7 @@ def __call__(self, X, alpha=1.0):
         interval (0.0, 1.0).
         Alpha must be a scalar.
         """
+
         if not self._isinit: self._init()
         alpha = min(alpha, 1.0) # alpha must be between 0 and 1
         alpha = max(alpha, 0.0)
diff --git a/lib/matplotlib/lines.py b/lib/matplotlib/lines.py
@@ -528,11 +528,13 @@ def set_ydata(self, y):
 
     def set_dashes(self, seq):
         """
-        Set the dash sequence, sequence of dashes with on off ink in points
+        Set the dash sequence, sequence of dashes with on off ink in
+        points.  If seq is empty or if seq = (None, None), the
+        linestyle will be set to solid.
 
         ACCEPTS: sequence of on/off ink in points
         """
-        if seq == (None, None):
+        if seq == (None, None) or len(seq)==0:
             self.set_linestyle('-')
         else:
             self.set_linestyle('--')
