How can I improve this line of code perfomance wise?

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lit
lit am 8 Aug. 2023
Kommentiert: lit am 8 Aug. 2023
When using the profiler to look at the performance of a function I need to work with, I saw that one line takes up much time
invalidIndex = any((coords<ddims(1:3)) | (coords>ddims(4:6)),2);
So it just checks if the point contained are within the bounds. The size of coords is nx3
Is there any way this line can be improved perfomance wise. I couldn't think of anything else...
  2 Kommentare
Walter Roberson
Walter Roberson am 8 Aug. 2023
You could try unvectorizing it and seeing how much difference that makes:
invalidIndex = coords(:,1)<ddims(1) | coords(:,2)<ddims(2) | coords(:,3)<ddims(3) | coords(:,1)>ddims(4) | coords(:,2)>ddims(5) | coords(:,3)>ddims(6);
My expectation is that this would be notably slower... but that you would have to measure the timing to be sure.
lit
lit am 8 Aug. 2023
actually, it does improve performance, so thank you very much!

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