Finding when data in a matrix exceeds a certain value

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Matt Dodgson
Matt Dodgson 2015-3-2
评论： Star Strider 2015-3-2
Hi,
I am trying to find the onset of damage within a matrix of data. I have subtracted away the standard deviation of the data and am now trying to find where the data is larger than the standard deviation, i.e. greater than 0.
Is there a function in MATLAB that will tell me when the data exceeds 0 and will print the row number?
Thanks

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Star Strider
Star Strider 2015-3-2
To find the row number where the data exceeds zero, use the find function with two outputs:
x = randi(10, 5, 5)-9; % Example Data
[xr, xc] = find(x > 0);
The ‘xr’ variable here has the row numbers of all the values that exceed zero. (The corresponding column numbers are in ‘xc’.)

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