Fix : click and drag bug outside lines

add:	print  Fractal coefficient of the segments on line mode exit

crmsfig.py

@@ -98,6 +98,11 @@ class Crms_fig(fig.Figure):
             if len(self.vertices) >0:
                 self.line.set_marker("")    # no marker
                 self.redraw_line()
+            for p in self.vertices:
+                print(p)
+            for ind in range(len(self.vertices)-1):
+                print("2alpha", 2 *(np.log(self.vertices[ind+1][1])-np.log(self.vertices[ind][1]))/
+                    (np.log(self.vertices[ind+1][0])-np.log(self.vertices[ind][0])))
             self.lineedit=False
             self.canvas.set_cursor(1)
 
@@ -156,6 +161,8 @@ class Crms_fig(fig.Figure):
                         self.vertices.insert(index,(event.xdata,event.ydata))
                         x,y=zip(*self.vertices)
                         self.line.set_data(list(x),list(y))
+                    else:
+                        return
                 self.index=index
                 self.mvcid = self.canvas.mpl_connect('motion_notify_event', self.on_mouse_move)
                 self.brcid = self.canvas.mpl_connect('button_release_event', self.on_button_release)