Random data selection from a matrix

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Tinkul
Tinkul 2014-3-8
评论： Image Analyst 2014-3-8
How can i select 5 datasample from the matrix
Z=[43;-57;98;23;-13;243;-98;112;325;560]

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Image Analyst
Image Analyst 2014-3-8
Try this:
Z=[43;-57;98;23;-13;243;-98;112;325;560]
elementsToExtract = randperm(numel(Z), 5)
z5 = Z(elementsToExtract)
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Image Analyst
Image Analyst 2014-3-8
You must have a really old version of MATLAB. What version/release do you have? You can extract the 5 yourself:
Z=[43;-57;98;23;-13;243;-98;112;325;560]
elementsToExtract = randperm(numel(Z))
z5 = Z(elementsToExtract(1:5))
Tinkul
Tinkul 2014-3-8
Thanx sir. Now its working...I have matlab 7.8.0(R2009a) version...

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