How to find the index of missing values in a cell array without looping through each element?

S1 = struct();
S2 = struct();
C = {S1 S2 missing};

Answer 1

[Voss]

You can use cellfun to call ismissing on the contents of each cell:

S1 = struct();
S2 = struct();
C = {S1 S2 missing}

C = 1×3 cell array
    {1×1 struct}    {1×1 struct}    {1×1 missing}

is_missing = cellfun(@ismissing,C)

is_missing = 1×3 logical array
   0   0   1

idx_missing = find(is_missing)

idx_missing = 3

(That's not got much loops.)

Answer 2

[Bharat Chandra Mukkavalli]

Hi,

You can use the "cellfun()" function to apply a function to all the contents in a cell array. Further documentation on cellfun() can be found here: https://in.mathworks.com/help/matlab/ref/cellfun.html

Refer to link here on finding the indices of non-empty cells in a cell array: https://in.mathworks.com/matlabcentral/answers/42283-index-non-empty-cells-in-cell-array

Hope this helps!