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Hi all,

I'm trying to refresh a map within a gtk application everytime a button 
is pressed. But whatever I do, it doesn't work. Somehow I need to clear 
the axes. But even that doesn't work. A short hint what I'm missing 
would be great.

Here comes the reduced code:

#!/usr/bin/env python
import pygtk
import gtk

from matplotlib.figure import Figure
from matplotlib.backends.backend_gtkagg import FigureCanvasGTKAgg as 
FigureCanvas
from mpl_toolkits.basemap import Basemap

class BGui:
     def destroy(self, widget, data=None):
         gtk.main_quit()

     def change_zoom(self,button,zoom):
     self.plot_map(zoom)

     def __init__(self):
         self.window = gtk.Window(gtk.WINDOW_TOPLEVEL)
         self.window.connect("destroy", self.destroy)
     self.zoom = 1.
         self.table = gtk.Table(2,1,True)
         self.window.add(self.table)
     self.plot_map(self.zoom)
         self.table.attach(self.canvasMap, 0,1,0,1)
         self.button = gtk.Button("Change Zoom")
         self.button.connect("clicked", self.change_zoom, self.zoom+1.)
     self.table.attach(self.button,0,1,1,2)
         self.window.show_all()

     def plot_map(self,zoom):
         print "plot_map called with zoom:" , zoom
         w = 1.2e6/zoom
         h = 1.2e6/zoom
         self.figMap = Figure()
         self.canvasMap = FigureCanvas(self.figMap)  # a gtk.DrawingArea
         self.canvasMap.set_size_request(200, 200)
         self.axMap = self.figMap.add_axes([0.02, 0.02, 0.96, 0.96])
     #if hasattr(self,'map'):
       #print "clearing axes"
       #del(self.map)
         self.map = Basemap(projection='tmerc', resolution='c',\
             lat_0=52., lon_0=9.5, width=w,height=h,ax=self.axMap)
         self.map.fillcontinents(color='green')
         self.canvasMap.draw()
         self.canvasMap.Refresh(True)

if __name__ == "__main__":
     bah = BGui()
     gtk.main()

Thanks in advance.

Cheers

Mario

-- 
Dr. Mario Mech

Institute for Geophysics and Meteorology
University of Cologne
Zuelpicher Str. 49a
50674 Cologne
Germany

t: +49 (0)221 - 470 - 1776
f: +49 (0)221 - 470 - 5198
e: me...@me...
w: http://www.uni-koeln.de/~mmech/

Hi!
I'm having problem with data plotting in matplotlib. Tried versions, 1.2.0
and 1.3.0 too, the same thing occurs except the error message. On 1.2.0 the
error message is Agg complexity exceeded on 1.3.0 it is Allocated too many
blocks.
The data i need to plot is 1M pts long and it's a bit complex (have a lot of
big changes). 

data = []
for a in range(0,1000000):
    data.append(int(random.random()*256))

I can catch the Overflow excepton, and i recover the matplotlib widget by
resetting the renderer, but the memory allocated by the previous plot is
still allocated until i close the app.
Is there a way to find where that memory leaked and how could i free it up?
Tried to clear the variables where i store the data, also cleared the figure
with .clear(), .clf(), .close() the memory is still used.



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Sent from the matplotlib - users mailing list archive at Nabble.com.

> Sourav Chatterjee <mailto:sr...@gm...>
> September 11, 2013 3:48 AM
> I am using 'spstere' for polar stereo graphic projection over 
> Antarctica. The specifications llcrnrlat, llcrnrlon etc are specified 
> in a python module. When I am doing it over north pole it is okay. But 
> in South pole the latitude circles are not appearing. Can anyone tell 
> where is the fault?
>
> Thanks in advance

Sample code please?

-Jeff
>
> -- 
> Sourav Chatterjee
> ------------------------------------------------------------------------------
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I am using 'spstere' for polar stereo graphic projection over Antarctica.
The specifications llcrnrlat, llcrnrlon etc are specified in a python
module. When I am doing it over north pole it is okay. But in South pole
the latitude circles are not appearing. Can anyone tell where is the fault?

Thanks in advance

-- 
Sourav Chatterjee