Replace values in each column of a matrix which lie below a threshold

Question

KostasK 2020-6-3

1
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/541646-replace-values-in-each-column-of-a-matrix-which-lie-below-a-threshold

评论： KostasK 2020-6-3

采纳的回答： madhan ravi

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Hi all,

Lets say I have the following matrix:

a =
9952    0.6999    0.2940
0034    0.2553    0.5776
3167    0.3135    0.4261

I would like to replace with zero the numbers in the first, second and thrid column that are less than 0.5, 0.3 and 0.8 respectivelly, so the result would be:

a_new =
9952    0.6999    0.0000
0000    0.0000    0.0000
0000    0.3135    0.0000

To do this, I try something like this a(a<[0.5 0.3 0.8],:)=0, however this doesn't work... Ideally I would like to avoid a for loop, so are there any other ways of accomplishing the above?

Thanks for your help in advance