How to stack arrays into a matrix
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Hi,
This sounds like it should be really easy, but I can't figure out a way to do it without a loop. I want to avoid loops as I am working with large matrices and speed is important.
I have a 1xm array which I'd like to stack into a nxm matrix. Is there a quick and easy way to do it without a loop?
Thank you!
3 个评论
Walter Roberson
2020-12-31
You have a (single) 1xm array? If you need it to be nxm then
repmat(TheArray, n, 1)
France Poirier
2020-12-31
France Poirier
2020-12-31
采纳的回答
Walter Roberson
2020-12-31
You have a (single) 1xm array? If you need it to be nxm then
repeated_matrix = repmat(TheArray, n, 1)
Side note: in current releases, repmat() is a built-in. In older versions, repmat() was a .m file that in this particular case would have come down to
repeated_matrix = TheArray(ones(n,1), :)
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