MATLAB: Applying functions to each cell in a cell array

cell array

Good afternoon,

I have a 60 by 1 cell array that stores matrices of different sizes (all numeric). I want to perform certain functions (mean, diff, hypot, convhull…etc) on these matrices from the 1st element of the cell array, to the 60th element.

Is there a way I can do that?

Thank you.

Best Answer

cellfun does exactly this.

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MATLAB: How to create a 1×3 cell array to hold multiple individual arrays

my_cell_array = {a,b,c};

Or if you are simply asking how to pre-allocate the cell array in advance:

my_cell_array = cell(1,3);

MATLAB: How to obtain the indexes of numbers in a cell array with mixed data

You can use "cellfun" to run the is* style functions for every cell in a cell array. For your particular use-case, you seem to want only cells that are numeric and non-NaN. You could do two calls to cellfun, or just make an anonymous function that checks both:

cellfun(@(c) isnumeric(c) && ~isnan(c),cellArray1)

This will give you a logical array the same size as the cell array. You can choose to use "find" if absolutely necessary to get the indices out, but that usually isn't required.

-Cam

Best Answer

Related Solutions

MATLAB: How to create a 1×3 cell array to hold multiple individual arrays

MATLAB: How to obtain the indexes of numbers in a cell array with mixed data

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