Hello, I would like to get periodically updated plots: the data set grows at some rate (5 numbers/sec) and I would like to update all plots I have (may be multiple) once in 5 seconds, for example.
I thought of storing Figure objects after creating the plots, then launch separate thread that would wake up every 5 seconds, copy data from the source arrays to the Line2D instances (set_data(...)) and call Figure.draw(..) to update the plot. I have a few questions to that: 1. Would it be possible to do only shallow copy of the arrays that are being plotted so that on redrawing the figure, chanes in the datasets would be picked up automatically? If not, is Line2D.set_data(...) the right approach? 2. How can I trigger autoscaling of the figure so that all data can be displayed? Like the one happening when the figure is first drawn; in the _ideal_ case deynamic autoscaling would be effected only if the graph has the default zoom level, so that user-zoom is not reset at every redraw. 3. How do I iterate over all Figure instances (and, consequently, Line2D instances) that are being displayed? Currently, I store Line2D's that are returned by pylab.plot(...) to acces them later, but I think there must be a better way, I hope I was able to clearly express my problem. Do not hesitate to ask for more information. Best regards, Vaclav ------------------------------------------------------------------------- Sponsored by: SourceForge.net Community Choice Awards: VOTE NOW! Studies have shown that voting for your favorite open source project, along with a healthy diet, reduces your potential for chronic lameness and boredom. Vote Now at http://www.sourceforge.net/community/cca08 _______________________________________________ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
