ranges of dimensions when using nan

dear community,

I have a 6D result Arr(crb, cefb, crr, crp, ctb, ccb) where Arr(Arr>1)=nan.

How can I find the values of crb, cefb, crr, crp, ctb and ccb, where Arr is not nan?

thanks

[Sulaymon Eshkabilov]

Can you post your sample data to address your question in a more specific way?

[KSSV]

Have a look on the function isnan.

[Asliddin Komilov]

I have attached the data, and isnan did not handle the 6D (or I don't know how to do it)

Answer 1

[Jan]

isnan is the function, which replies a logical array with the same dimension as the input and TRUE values, where the input has NaN elements. It does handle 6 dimensional arrays.

siz  = [2,3,4,5,6,7];
Data = ones(siz);  % Some test data
Data(rand(siz) > 0.5) = nan;
index = isnan(Data)

Now use either the logical array directly, or call find() to obtain the index vectors. Maybe ind2sub helps you to get the indices for the different dimensions.

[Asliddin Komilov]

thanks,

actually, i thought it did not work because the result became an array, whereas I have expected 6D. if i understand correctly, you suggest to use ind2sub to get my 6D. Would you please give a link where it is used such way.

thanks

[Jan]

isnan() replies an array of the same size as the input. So if the input has 6 dimensions, the output has 6 dimensions, too.

Please post a piece of code, which reproduces your problem.

ind2sub converts the linear index to the indices related to an array. See: doc ind2sub.

[Asliddin Komilov]

sorry, it was another line that made the error.

actually I needed to use isfinite and it worked exactly as you said.

thanks