Stano Paška wrote:
> Hi,
> I am using matplotlib first time and I am wonder how to free resources
>
> I have this script
>
> # coding: utf-8
>
> import matplotlib
> matplotlib.use('Agg')
>
> import pylab
>
> class Graph:
>
> def __init__(self):
> # sirka stlpcov
> self.width = 0.5
> self.font = {'fontname':'Tahoma', 'fontsize':10}
>
> def setTitle(self, title):
> """Nastavi nadpis grafu
> """
> self.title = title
>
> def setXLabel(self, label):
> self.x_label = label
>
> def setYLabel(self, label):
> self.y_label = label
>
> def setYValues(self, values):
> """Nastavi y-ove hodnoty
> """
> self.y_values = values
> # vypocitame lave spodne rohy stlpcov
> self.x_values = [x + self.width / 2 for x in
> range(len(self.y_values))]
> # vypocitame stred stlpcov (znacky na x-ovej osi)
> self.x_ticks = [x + self.width for x in range(len(self.y_values))]
>
> def setXTickLabels(self, labels):
> """Nastavi popisky pre ciarky na x-ovej osi
> """
> self.x_ticksLabels = labels
>
> def makeGraph(self):
> self.fig = pylab.figure()
> self.fig.set_dpi(72)
> self.fig.set_figheight(3)
> self.fig.set_figwidth(5)
>
> self.fig.subplots_adjust(bottom=0.15)
>
> self.ax = self.fig.add_subplot(111)
>
> self.ax.bar(left=self.x_values, height=self.y_values,
> width=self.width, color='#f00000')
> self.ax.set_xticks(self.x_ticks)
> self.ax.set_xticklabels(self.x_ticksLabels)
>
> self.ax.set_xlabel(self.x_label, **self.font)
> self.ax.set_ylabel(self.y_label, **self.font)
> self.ax.set_title(self.title, **self.font)
>
> def saveGraph(self, path):
> self.fig.savefig(path, format='png')
>
> def __del__(self):
> self.fig.delaxes(self.ax)
> del self.fig
> del self.ax
>
> if __name__ == '__main__':
> import random
> import gc
> for i in range(5000):
> g = Graph()
> g.setTitle(u'Spotreba za rok 2008 podľa ATC skupín')
> g.setXLabel(u'ATC skupiny')
> g.setYLabel(u'Spotreba v EUR')
> g.setYValues([random.randint(0, x) for x in range(20)])
> g.setXTickLabels([chr(random.randint(65, 90)) for x in range(20)])
> g.makeGraph()
> g.saveGraph('grafy/' + str(i) + '.png')
> del g
> print gc.get_count()
> gc.collect()
> print gc.get_count()
>
> When I used TkAgg, it crashes after 190 images (Fail to create pixmap
> with Tk_GetPixmap in ImgPhotoInstanceSetSize. tried to delete photo
> image when instances still exist).
> When I switch to WX, it crashes after 400 images.
> And Agg crashes when pagefile reaches 1.5x ram (cca 2000 images).
>
> It is possible somehow free resources in matplotlib?
You need to close the figure. Try putting
pylab.close(self.fig) at the start of your __del__ method. In fact, I
doubt you need to explicitly del anything in that method--you just need
to close the figure so that pylab will release its references related to
that figure.
There may be more things you need to change, but closing the figure is
certainly going to be a big one.
Eric
>
> I use python 2.5.4, wx 2.8.9.2, numpy 1.3.0b1 on win XP
>
> Thanks for answers.
>
> Stano.
>
> ------------------------------------------------------------------------------
> Apps built with the Adobe(R) Flex(R) framework and Flex Builder(TM) are
> powering Web 2.0 with engaging, cross-platform capabilities. Quickly and
> easily build your RIAs with Flex Builder, the Eclipse(TM)based development
> software that enables intelligent coding and step-through debugging.
> Download the free 60 day trial. http://p.sf.net/sfu/www-adobe-com
> _______________________________________________
> Matplotlib-users mailing list
> Matplotlib-users@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/matplotlib-users
------------------------------------------------------------------------------
Apps built with the Adobe(R) Flex(R) framework and Flex Builder(TM) are
powering Web 2.0 with engaging, cross-platform capabilities. Quickly and
easily build your RIAs with Flex Builder, the Eclipse(TM)based development
software that enables intelligent coding and step-through debugging.
Download the free 60 day trial. http://p.sf.net/sfu/www-adobe-com
_______________________________________________
Matplotlib-users mailing list
Matplotlib-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/matplotlib-users
