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matlabmatrix
J.Smith
J.Smith

Reputation: 335

Check if matrix is not Nan in matlab

I have a matrix <1x100>. How do I check if all the values in the matrix are NaN?

Basically I want to check if the matrix only contains of NaN values with an if-statement.

Upvotes: 1

Views: 2997

Answers (2)

Novice_Developer
Novice_Developer

Reputation: 1492

Lets consider x which is a vector of nan 

x = nan(1,100);

to check if all the values are nan , you can do 

if(~isempty(find(isnan(x))))

Upvotes: -1

ibezito
ibezito

Reputation: 5822

Solution

Use the following syntax:

res = ~any(~isnan(X(:)));

if res==true it means that that the matrix contains only nan values.

Example

X = nan(3,3)
~any(~isnan(X(:)))

X(1,2) = 0;
~any(~isnan(X(:)))

Results

ans = 1
ans = 0

Upvotes: 4

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