how to remove the NaN values from a dataset?

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Sreeraj R
Sreeraj R on 24 Nov 2021
Answered: Image Analyst on 24 Nov 2021
hi everyone
i have made a dataset which has values in my study region and rest of the area has NaN values. how do i remove the Nan values so that i get only my study area. i have done this to crop my study area. the current dimensions of the dataset is 450x4173x34, so after removing the NaN values the dimensions also should change. kindly let me know how to do this.
i tried using isnan but the output was in 1 dimension. i need my output in 3 dimensions.

Accepted Answer

KSSV
KSSV on 24 Nov 2021
Read about isnan,
A = [1 2 NaN 2 NaN rand] ;
idx = isnan(A) ;
A(idx) = [] % remove NaNs
If you try to remove NaN's from matrix, the result will be a column array and you may not want this. So try to fill NaN's with legit values either using fillmissing or ScatteredInterpolant.

More Answers (1)

Image Analyst
Image Analyst on 24 Nov 2021
You could try regionfill(). But since it only operates on 2-D images, you'd have to fill it in slice by slice.

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