how to find the index?

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Lilya 2020-11-5

评论： Lilya 2020-11-5

Hi all,

I am facing a trouble in extracting the indecies from the 3rd dimension of matrix using 'find' function.

for example : time is 251 * 28 * 20, where 20 is the time.

index = find(time>=datenum(2019,02,01)& time<=datenum(2019,02,07));

any help will be apprecited

Ameer Hamza 2020-11-5

编辑：Ameer Hamza 2020-11-5

By default, find() return linear indexes. To convert them to the dimension subscripts, you ind2sub()

index = find(time>=datenum(2019,02,01)& time<=datenum(2019,02,07));
[r, c, p] = ind2sub(size(time), index)

'p' is location in 3rd dimension.

Ameer Hamza 2020-11-5

I don't get empty output on running this code. The output on my system is attached.

Lilya 2020-11-5

after checking with what I have, it is working!!

The problem is it was taking another set.

Thank you very much Ameer.

MATLAB Language Fundamentals Matrices and Arrays Matrix Indexing

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