- Instead of plotting repeatedly, update the xdata and ydata of the existing plots
- Downsample your data to just the required pieces
- Use drawnow to flush events that have built up in the queue.
Large array
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Hi I would like to plot and process large data array with a GUI. The problem is that with small data array, the user interface works correctly but with large array the plotting (1D and 2D plot) encounters big delays and the interactivity (scrolling, updating...) becomes impossible. What's the best way to plot, process and interact with large data arrays ? Thanks.
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Accepted Answer
Sean de Wolski
on 10 Apr 2012
How are you plotting? What is the best way to visualize your data that requires minimal memory?
The best way would probably include a few steps:
More Answers (2)
Jan
on 10 Apr 2012
Please post any details, e.g. the used code and the absolute size of what you call "large". A 2D plot of 1e9 points will be slow under all conditions, while a plot of 1e5 lines can be impeded by a variety of factors. Without seeing the code, we cannot guess the cause of the slowdown or suggest any improvements.
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