How can I change the value of Y in the columns whare the value of X is zero in matrix ?

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Siwakorn Phakdee
Siwakorn Phakdee 2021-11-4
评论： Siwakorn Phakdee 2021-11-4
I have the large column of matrix XY for example
X Y
1 5
0 10
3 26
0 5
if I want to change the value of Y in the columns whare the value of X is zero like this
X Y
1 5
0 1.5
3 26
0 1.5
Which the command I need to use ?

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采纳的回答

Alan Stevens
Alan Stevens 2021-11-4
Ran in:
Like this
XY = [1 5
0 10
3 26
0 5];
XY(XY(:,1)==0,2) = 1.5
XY = 4×2
1.0000 5.0000 0 1.5000 3.0000 26.0000 0 1.5000

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