Hello,
I have a problem when I try to refresh a plot I create.
The code is shown below:
What I want to do is that when the user initiates a key press the plot is
updated. (If you minimise and maximise then it is done, the problem is the
repainting of the window. I have tried searching on the web but cant find out
how to do it (as well as trying lots of things with show() but alas no luck so
far).
Any help much appreciated.
Thanks
import wximport osimport matplotlib
# either WX or WXAgg can be used here.# matplotlib.use('WX')# from
matplotlib.backends.backend_wxagg import FigureCanvasWx as FigCanvas
matplotlib.use('WXAgg')from matplotlib.backends.backend_wxagg import
FigureCanvasWxAgg as FigCanvas
from matplotlib.figure import Figureimport matplotlib.numerix as numpy
class PlotFrame(wx.Frame):
start_msg = """ Press Any Key to Initiate Plot - well thats the plan...
""" def __init__(self): wx.Frame.__init__(self, None, -1, "Test
Plotting") self.fig = Figure((5.0,3.0), 100) self.canvas=
FigCanvas(self, -1, self.fig) self.axes =
self.fig.add_axes([0.15,0.15,0.75,0.75])
sizer = wx.BoxSizer(wx.VERTICAL) sizer.Add(self.canvas, 1,
wx.LEFT|wx.TOP|wx.GROW) sizer.Add(wx.StaticText(self,-1,
self.start_msg), 0, wx.ALIGN_LEFT|wx.TOP)
self.canvas.Bind(wx.EVT_KEY_DOWN, self.onKeyEvent)
self.SetSizer(sizer) self.Fit() self.Build_Menus()
def Build_Menus(self): """ build menus """ MENU_EXIT =
wx.NewId() MENU_SAVE = wx.NewId()
menuBar = wx.MenuBar()
f0 = wx.Menu() f0.Append(MENU_EXIT, "E&xit", "Exit")
menuBar.Append(f0, "&File");
self.SetMenuBar(menuBar)
self.Bind(wx.EVT_MENU, self.onExit , id=MENU_EXIT) def
onKeyEvent(self,event=None): """ capture , act upon keystroke events"""
print "I plot here" self.Plot_Data() print "but how do i
get it to be drawn?" self.Show()
def onExit(self,event=None): self.Destroy()
def Plot_Data(self): t = numpy.arange(0.0,5.0,0.01) s =
numpy.sin(2.0*numpy.pi*t) c = numpy.cos(0.4*numpy.pi*t)
self.axes.plot(t,s) self.axes.plot(t,c)
if __name__ == '__main__': app = wx.PySimpleApp() fig = PlotFrame()
fig.Show(True) app.MainLoop()
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