add MAVelocity.py

python/MAError.py

@@ -51,12 +51,13 @@ class MPLCanvasErr(FigureCanvas):
     ax=self.ax
     errx,erry,err=err
     hl = []
-    hl = ax.plot(errx, 'g-',label='x-error')
-    hl = ax.plot(erry, 'y-',label='y-error')
-    hl = ax.plot(err, 'r-',label='error')
+    hl += ax.plot(errx, 'g-',label='x-error')
+    hl += ax.plot(erry, 'y-',label='y-error')
+    hl += ax.plot(err, 'r-',label='error')
     ax.xaxis.set_label_text('time (10x servo cycle)')
     ax.yaxis.set_label_text('pos-error um')
     legend = ax.legend(loc='upper right', shadow=True)
+    ax.plot([.5,.5],[0.01, 0.99],'k',transform=ax.transAxes)
     self.ax = ax
     self.hl = hl
 
@@ -168,7 +169,7 @@ class MAErrorFrame(wx.Frame):
 
   def OnUpdate(self, msg, usrData):
     # this is the model-view-control update function
-    print 'OnUpdate',self, msg, usrData
+    #print 'OnUpdate',self, msg, usrData
     # for message description s.a. class MADoc
     if msg == 0:
       canvas = self.canvas