Split values in an cell array by using a threshold
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Hello everyone.I have a cell array of variable (A), 1x91.In each cell it has an array of size 256x256.I would like to threshold each array so that elements lesser than or greater than a given threshold value are stored in different variable.Your help is really appreciated.
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Accepted Answer
Matt J
on 19 May 2020
Edited: Matt J
on 19 May 2020
One way,
A_lower = cellfun(@(x) x(x<threshold), A, 'uni',0);
A_upper = cellfun(@(x) x(x>threshold), A, 'uni',0);
4 Comments
Matt J
on 19 May 2020
In the case where you got empty matrices, it because none of your data fall below 0.5. In the case where you got error messages, it is because your A variable is not a cell array.
Below is a small example showing that the technique will work when properly applied:
>> A={rand(3), rand(3)}; A{:}
ans =
0.5407 0.9734 0.1941
0.8929 0.6006 0.7933
0.9092 0.8582 0.8144
ans =
0.5087 0.0331 0.7163
0.3399 0.1797 0.3758
0.6815 0.7166 0.3589
>> A_lower = cellfun(@(x) x(x<0.5), A, 'uni',0); A_lower{:}
ans =
0.1941
ans =
0.3399
0.0331
0.1797
0.3758
0.3589
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