x and ylabel problem when embedding in wx

Hi, (I'm sending again because email was probably

    > filtered?)

    > I have problem with xlabel and ylabel when embedding in
    > wx. See snapshot :
    > http://emmanuelfavrenicolin.free.fr/Public/Divers/Snapshots1/wx_snap.png
    > Do I need twiking and/or understand better wxpython ?
    > Anyone can help me?

It's not about wx or wxpython, it's a matplotlib issue. Whether you
consider it a feature or a bug, mpl doesn't try to resize your Axes to
make sure your axis labels fit. But it makes it easy for you to do
so. Try something like

  fig.subplots_adjust(left=0.15, bottom=0.15)

which will move your left border to the right and your bottom border
up and make more room for your text labels.


Le Vendredi 10 Novembre 2006 00:50, vous avez écrit :

    > It's not about wx or wxpython, it's a matplotlib issue.

Let me add some color to that statement -- when I took a look at your
screenshot, I realized you are using the WX backend and not the WXAgg
backend. If you don't understand the difference, peruse
http://matplotlib.sf.net/backends.html . WXAgg may have the same
problem (and the same solution from my last post) but will give you
more consistent rendering and layout.


Thank you John!!

In fact WXAgg does not have the same problems. I mean, there is no problem
with WXAgg and fig.subplots_adjust(left=0.15, bottom=0.15) is even not
needed! It looks much nicer :


It means that WXAgg is to be the "recommend" way for embedding in wxpython?
Just for reference, a "sample" code derived from dynamic_image_wxagg.py :

#!/usr/bin/env python
import sys, time, os, gc

import matplotlib

from matplotlib import rcParams
rcParams['numerix'] = 'numarray'

import matplotlib.cm as cm

from matplotlib.backends.backend_wxagg import Toolbar, FigureCanvasWxAgg

from matplotlib.figure import Figure
import matplotlib.numerix as numpy
from wxPython.wx import *

TIMER_ID = wxNewId()

class PlotFigure(wxFrame):

    def __init__(self):
        wxFrame.__init__(self, None, -1, "Test embedded wxFigure")

        self.fig = Figure((7,5), 75)
        #self.fig.subplots_adjust(left=0.15, bottom=0.15)
        self.canvas = FigureCanvasWxAgg(self, -1, self.fig)
        self.toolbar = Toolbar(self.canvas)

        # On Windows, default frame size behaviour is incorrect
        # you don't need this under Linux
        tw, th = self.toolbar.GetSizeTuple()
        fw, fh = self.canvas.GetSizeTuple()
        self.toolbar.SetSize(wxSize(fw, th))

        # Create a figure manager to manage things

        # Now put all into a sizer
        sizer = wxBoxSizer(wxVERTICAL)
        # This way of adding to sizer allows resizing
        sizer.Add(self.canvas, 1, wxLEFT|wxTOP|wxGROW)
        # Best to allow the toolbar to resize!
        sizer.Add(self.toolbar, 0, wxGROW)
        EVT_TIMER(self, TIMER_ID, self.onTimer)

    def init_plot_data(self):
        # jdh you can add a subplot directly from the fig rather than
        # the fig manager
        a = self.fig.add_subplot(111)
        a.set_xlabel('Xaxis [u.a.]')
        a.set_ylabel('Yaxis [u.a.]')
        self.ind = numpy.arange(60)
        tmp = []
        for i in range(60):
        self.X = numpy.array(tmp)
        self.lines = a.plot(self.X[:,0],'o')
        self.count = 0

    def GetToolBar(self):
        # You will need to override GetToolBar if you are using an
        # unmanaged toolbar in your frame
        return self.toolbar

    def onTimer(self, evt):
        self.count += 1
        if self.count >= 60: self.count = 0
        self.lines[0].set_data(self.ind, self.X[:,self.count])
        #self.canvas.gui_repaint() # jdh wxagg_draw calls this already

    def onEraseBackground(self, evt):
        # this is supposed to prevent redraw flicker on some X servers...
if __name__ == '__main__':
    app = wxPySimpleApp()
    frame = PlotFigure()
    # Initialise the timer - wxPython requires this to be connected to
    # the receiving event handler
    t = wxTimer(frame, TIMER_ID)