Add scatter label option for cursor

Author: mp-007

example_cursor_scatter_experimental/graph_widget.py

@@ -90,6 +90,7 @@ def __init__(self, **kwargs):
 
         self.lines=[]
         self.scatters=[]
+        self.scatter_label = None
 
         self.bind(size=self._onSize)
 
@@ -314,7 +315,10 @@ def hover(self, event) -> None:
                 self.vertical_line.set_xdata(x)
 
                 #x y label
-                self.text.set_text(f"x={x}, y={y}")
+                if self.scatter_label  and idx_best > len(good_line)-1:                                 
+                    self.text.set_text(f"pt{self.scatter_label [good_index_scatter[idx_best]]} x={x}, y={y}")
+                else:
+                    self.text.set_text(f"x={x}, y={y}")
 
                 #blit method (always use because same visual effect as draw)
                 self.axes.draw_artist(self.axes.patch)

example_cursor_scatter_experimental/main.py

@@ -47,6 +47,7 @@ def on_start(self, *args):
         mygraph = GraphGenerator()
 
         self.screen.figure_wgt.figure = mygraph.fig
+        self.screen.figure_wgt.scatter_label  = mygraph.ptid
         self.screen.figure_wgt.axes = mygraph.ax1
         self.screen.figure_wgt.xmin = mygraph.xmin
         self.screen.figure_wgt.xmax = mygraph.xmax