move picker from scatter to plot in plot_lines_mass_pos() so checking for...

move picker from scatter to plot in plot_lines_mass_pos() so checking for line2D in plotting_widget's on_pick_event works for masspos

sohstationviewer/view/plotting/plotting_widget/plotting.py

@@ -380,6 +380,7 @@ class Plotting:
             ax.myPlot = ax.plot(x, y,
                                 linestyle='-', linewidth=0.7,
                                 color=self.parent.display_color['sub_basic'],
+                                picker=True, pickradius=3,
                                 zorder=constants.Z_ORDER['LINE'])[0]
             colors = [None] * len(y)
             sizes = [1.5] * len(y)
@@ -397,7 +398,6 @@ class Plotting:
                     prev_v = v
                     count += 1
             ax.scatter(x, y, marker='s', c=colors, s=sizes,
-                       picker=True, pickradius=15,
                        zorder=constants.Z_ORDER['DOT'],)
         ax.x_list = x_list
         ax.y_list = y_list