wxpython, updating plot (wx.lib.plot)

[dazzler]

Hi! I just moved using wxpython so I'm a quite newbie.

I was wondering how to update plotcanvas?
In my code I made button with event to update plotcanvas with new results, but how to properly do it? because now when I press button it makes new "layer" into my GUI and doesn't delete the old plot. Should I first delete the old one and then create new plot, or just update old one, well either way I don't know how to do it... =/

[code="python"]
#!/usr/bin/env python
# -*- coding: UTF-8 -*-

import wx
import wx.lib.plot as plot

class MyFrame(wx.Fram e):
def __init__(self):
self.frame1 = wx.Frame(None, title="test", id=-1, size=(500, 300))
self.panel1 = wx.Panel(self.f rame1)
self.panel1.Set BackgroundColou r("white")

Button1 = wx.Button(self. panel1, -1, "Update", (200,220))
Button1.Bind(wx .EVT_BUTTON, self.redraw)

plotter = plot.PlotCanvas (self.panel1)
plotter.SetInit ialSize(size=(5 00, 200))

data = [[1, 10], [2, 5], [3, 10], [4, 5]]
line = plot.PolyLine(d ata, colour='red', width=1)

gc = plot.PlotGraphi cs([line], 'Test', 'x', 'y')
plotter.Draw(gc )

self.frame1.Sho w(True)


def redraw(self, event):
plotter = plot.PlotCanvas (self.panel1)
plotter.SetInit ialSize(size=(5 00, 200))

data2 = [[1, 20], [2, 15], [3, 20], [4, -10]]
line = plot.PolyLine(d ata2, colour='red', width=1)

gc = plot.PlotGraphi cs([line], 'Test', 'x', 'y')
plotter.Draw(gc )

app = wx.PySimpleApp( )
f = MyFrame()
app.MainLoop()
[/code]

[jlm699]

plotter.Clear() should take care of clearing the canvas.

I've only used matplotlib before; and I know that in order to get a dynamic plot up and running I had to use clear before every new plot. I assume it would be similar with wx.lib.plot