How can I improve this line of code perfomance wise?

조회 수: 4 (최근 30일)
lit
lit 2023년 8월 8일
댓글: lit 2023년 8월 8일
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...
  댓글 수: 2
Walter Roberson
Walter Roberson 2023년 8월 8일
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 2023년 8월 8일
actually, it does improve performance, so thank you very much!

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