How can I return indices for specific strings found within cells of a cell array?

Hi all!

I have a cell array where each cell has a three letter identification, i.e. 'ABC'

I was wondering if there was a function, or a simple way, of returning indices for specific strings within the cell array, i.e. if I want to find all cells within the array that have 'ABC'. Similar to the find function.

I've written the following function below, and it works, however; it doesn't seem completely efficient.

function Result = pullIndices(charArray, String)
    x = 1 ;
    Result = NaN(1, length(charArray)) ;
    for i = 1:length(charArray)
        if strcmp(charArray{i}, String)
            Result(x) = i ;
            x = x + 1;
        end
    end
    Result = Result(1, 1:x-1) ;
end

Thanks!

Answer 1

[Walter Roberson]

pullIndices = @(charArray, String) find( strcmp(charArray, String) );

Single short anonymous function.

[Kane Fox]

Ah, so simple! Thanks so much.

Answer 2

[Kuifeng]

 doc regexp