Delete Rows of an Array where a given column is less (or greater) than a given value

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Douglas Anderson
Douglas Anderson 2015-5-22
编辑： William McMillan 2019-2-22
Hello!
With an array like this:
A= 4 2 3
1 6 5
1 2 9
5 2 2
1 2 6
I would like to have an array with (for example) column 3 less than 5. I know that sortrows(A,3) can get the rows in order, but what is the (logical?) test to eliminate these rows?
Thanks!
Doug

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Star Strider
Star Strider 2015-5-22
编辑：Star Strider 2015-5-22
To eliminate the rows with the value of column 3 less than 5, keep those with the value of column 3 greater than or equal to 5:
A = A(A(:,3) >= 5, :)
similarly:
A(A(:,3) < 5, :) = []
will both produce:
A =
1 6 5
1 2 9
1 2 6
Is this what you want to do?
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William McMillan
William McMillan 2019-2-22
编辑：William McMillan 2019-2-22
I have a 39801x7 array and i would like to keep any row that has a value greater than 5 or value less than -5. How would I do this?

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