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POPython matplotlib Update figure after savefig called
 

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  1. POPython matplotlib Update figure after savefig called
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    <p>My problem is: I have Matplotlib figure in PyGTK application, that is constatly updated each few seconds. I've added abbility to save figure to disk as PNG file. After calling <code>figure.savefig(filename, other parameters)</code> my figure in application stops being updated.</p> <p>Figure initialization phase:</p> <pre><code># setup matplotlib stuff on empty space in vbox4 figure = Figure() canvas = FigureCanvasGTK(figure) # a gtk.DrawingArea canvas.show() self.win.get_widget('vbox4').pack_start(canvas, True, True) # this will be aded to last place self.win.get_widget('vbox4').reorder_child(canvas, 1) #place plot to space where it should be </code></pre> <p>Figure is being updated this way (this called each few seconds in separate thread):</p> <pre><code>def _updateGraph(self, fig, x, x1, y): #Various calculations done here fig.clf()#repaint plot: delete current and formate a new one axis = fig.add_subplot(111) #axis.set_axis_off() axis.grid(True) #remove ticks and labels axis.get_xaxis().set_ticks_position("none") for i in range(len(axis.get_xticklabels())): axis.get_xticklabels()[i].set_visible(False) axis.get_yaxis().set_ticks_position("none") axis.plot(numpy.array(x),numpy.array(y)/(1.0**1), "k-" ,alpha=.2) axis.set_title('myTitle') fig.autofmt_xdate() fig.canvas.draw() </code></pre> <p>everything works as expected. But after calling:</p> <pre><code>figure.savefig(fileName, bbox_inches='tight', pad_inches=0.05) </code></pre> <p>File have been saved, BUT <strong>my figure on screen stops being updated</strong>. </p> <p>Any ideas how do I save figure to disk and still be able to update my fig on screen ?</p>
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    1. COA standalone example might help. That is, no-one has any idea what "gui" is, how savefig gets called, etc from these fragments of code. Of course you'll want to pare it down to something that is not too many lines but exhibits the problem.
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      1. USJouni K. Seppänen
    2. COThank you for trying to help me. Yes, i know this code is useless, and cannot be run as standalone. Figure save method is called by button press event. `gui.w().get("figureMain")` is my personal wault for globaly used object. it's just a variable. I will try to create sample app
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