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Evaluate first column data, set remaining columns to zero based on first column value.

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Andrew Paulsen
Andrew Paulsen 2017-4-26
评论： Andrew Paulsen 2017-4-26
I have a matrix of data, several rows, 4 columns and I want to look at the first column value and if it is above or below a certain value, set all the remaining columns in that row to zero. Sounds simple, but struggling to figure it out.

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Walter Roberson
Walter Roberson 2017-4-26
mask = YourMatrix(:,1) > TheHighCutoff | YourMatrix(:,1) < TheLowCutoff;
YourMatrix(mask,2:end) = 0;

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