MATLAB: Function for opposite of isnan

isnan

What I would like is a statement that creates a logical column that is opposite of that which isnan() creates. In other words, instead of nans being indicated by 1, I'd like it to be indicated as a zero… Any ideas for a code or function?

Best Answer

you would go ~isnan() to reverse the 1's to zeros and zeros to be 1.

Related Solutions

MATLAB: Correct use of isnan

You can't remove some values of your matrix. You can remove columns, rows or channels. Obviously, the size of your matrix will be reduced

MATLAB: Replace a number in a matrix depending on neighbor numbers

It is unclear if elements connected diagonally count as neighbours. If not, then you could try something like this.

%%Work with At to keep A intact
At=A;
%%Replace NaN with some number
At(isnan(At))=9;
%%B is for saving index of new NaNs
B=zeros(size(At));
%%Find sequences of [2 NaN] and [NaN 2] row-wise
for i=1:size(At,1)
B(i,strfind(At(i,:),[9 2])+1)=NaN;
B(i,strfind(At(i,:),[2 9]))=NaN;
end
%%Transpose A and repeat (same as column-wise)
At=At';
for i=1:size(At,2)
B(strfind(At(i,:),[9 2])+1,i)=NaN;
B(strfind(At(i,:),[2 9]),i)=NaN;
end
A(isnan(B))=NaN

ans =

   NaN   NaN   NaN   NaN   NaN   NaN   NaN
   NaN   NaN   NaN   NaN   NaN   NaN   NaN
   NaN   NaN     1     1     1   NaN   NaN
   NaN   NaN     1     2     1   NaN   NaN
   NaN   NaN     1     1     1   NaN   NaN
   NaN   NaN   NaN   NaN   NaN   NaN   NaN
   NaN   NaN   NaN   NaN   NaN   NaN   NaN

Best Answer

Related Solutions

MATLAB: Correct use of isnan

MATLAB: Replace a number in a matrix depending on neighbor numbers

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