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Turning interactivity off when drawing in matplotlib

Running in interactive mode is great and all, but I just learned that in interactive mode EVERY plotting command causes a COMPLETE redraw. That would explain all the flickering and delay in a script I put together that changes the plot each time a mouse action is executed on the axes.

However, ioff() comes to the rescue. This nifty function temporarily turns off interactivity, so that all those plotting commands go in a pipeline and you can show it all in the end when you want to.
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