How to find standard deviation of all entries in a range and omit nan

Suppose I have a matrix that contains NaN entries. I want to find the the standard deviation of all entries in the range (r1:r2,c1:c2) and omit NaN entries. Is there a way to do this without extracting data range first and storing it as a new entry?

I Want to avoid this

A=rand(10);

ssA=A(2:4,3:7); % Sub Set of A

StdssA=std(ssA(:),'omitnan')

And instead do something like this:

A=rand(10);

StdssA=std(A(2:4,3:7),'omitnan')

Unfortunately, this only gives me the std of this range based on whatever dim I specifiy. I want to get the std of all elements in this range with one line of code.

Answer 1

[Chunru]

A=rand(10);
StdssA=std(A(2:4,3:7), 0, 'all', 'omitnan')    % doc std

StdssA = 0.3421