[Matplotlib-users] Graph animation performance
Hello,
I want a real-time animation. There is no loop in the animation because
the data comes from the real world (AD data). I wrote this class:
class Eigendiagramm(object):
def __init__(self,daten):
self.DiagrammBreite = gtk.Adjustment(100,20,1,1,10,10)
self.DiagrammBreiteWidget = gtk.VScale(self.DiagrammBreite)
self.DiagrammBreiteWidget.connect("value_changed",
self.updateBreite, None)
self.data = daten
self.fig = Figure()
self.fig.set_animated(True)
self.graph = self.fig.add_subplot(111)
self.line, = self.graph.plot(self.data.get_ekg_data(),)
self.graph.axis([0, self.DiagrammBreite.get_value(), 0, 4096])
self.canvas = FigureCanvas(self.fig)
self.DiagrammBreite = gtk.Adjustment(100,20,1,1,10,10)
self.DiagrammBreiteWidget = gtk.VScale(self.DiagrammBreite)
self.DiagrammBreiteWidget.connect("value_changed",
self.updateBreite, None)
def updateGraph(self,data):
datacut = data[1 - self.DiagrammBreite.get_value():1]
self.line.set_ydata(datacut)
self.line.set_xdata(numpy.arange(0, datacut.size, 1))
self.fig.canvas.draw()
def updateBreite(self,widget, data = None):
self.graph.axis([0, self.DiagrammBreite.get_value(), 0, 4096])
It works but it is very slow. (About 160mS for updateGraph when I have
two graphs) Is there any possibility to improve the performance? I
embedded the figure in GTK.
I looked to animation examples but every example there is a loop. So I
don't know how to use this class for my problem.
Peter
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Re: [Matplotlib-users] Graph animation performance
> def updateGraph(self,data): > datacut = data[1 - self.DiagrammBreite.get_value():1] > self.line.set_ydata(datacut) > self.line.set_xdata(numpy.arange(0, datacut.size, 1)) > self.fig.canvas.draw() If nothing else, it appears that the plot's x data are constant. Have you tried just setting it once when you create self.line? Skip -- Introducing Performance Central, a new site from SourceForge and AppDynamics. Performance Central is your source for news, insights, analysis and resources for efficient Application Performance Management. Visit us today! http://pubads.g.doubleclick.net/gampad/clk?id=48897511&iu=/4140/ostg.clktrk ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
Re: [Matplotlib-users] Explicitly clearing Matplotlib/Pylab figure buffers
2013/8/23 Kari Aliranta : > 23.08.2013 20:57, Eric Firing kirjoitti: > Thank you. I'd like to stick to pure OO, but I'm using some > third party open source code that uses pylab extensively for > rather large and interactive (as in "includes scrollbars, > buttons and several types of events") figures. The code > works nicely in itself, and has an option to return the > figure object without actually showing the plot. > > I was hoping to take the returned figure as an object and > reset the related state environment information, effectively > "smuggling" the created figure out of the state environment. > If there is a simple way to do this in Matplotlib, that > would be quite useful. Does pyplot.close(fig) not do what you need? Goyo -- Introducing Performance Central, a new site from SourceForge and AppDynamics. Performance Central is your source for news, insights, analysis and resources for efficient Application Performance Management. Visit us today! http://pubads.g.doubleclick.net/gampad/clk?id=48897511&iu=/4140/ostg.clktrk ___ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
