find() returns content of {1×0 double} cell array

fullfiles have a list of file paths, RAW has the substrings I like to search for in the file paths.

I want the output AllIndex to be indexes of those found files.

    AllIndex={};
    for k = 1 : length(RAW)
    IndexRAW = strfind(fullfiles, char(RAW(k)));
    Index = find(~(cellfun('isempty', IndexRAW)));
    AllIndex{end+1}=Index
    end

but my output is

AllIndex =
  1×8 cell array
    {1×0 double}    {1×0 double}    {1×0 double}    {1×0 double}    {1×0 double}    {1×0 double}    {1×0 double}    {1×0 double}

its content shown in Editor as

    []	[]	[]	[]	[]	[]	[]	[]

Please help! Thanks!!

[darova]

I don't quiete understand your question. Can you explain more? Maybe example?

Result of strfind is integer arrays but you are trying to use cellfun

strfind('hello','ll')
ans =
     3

[chlor thanks]

say my fullfiles is = {'\\path\143'} {'\\path\204'} {'\\path\450'}

RAW = {'450'} {'143'}

I want the output AllIndex to be = 3 1

[Stephen23]

"Result of strfind is integer arrays but you are trying to use cellfun"

The MATLAB documentation states:

"If str is a cell array of character vectors or a string array, then strfind returns a cell array of vectors of type double."

source: https://www.mathworks.com/help/matlab/ref/strfind.html

Answer 1

[darova]

What about simple for loops?

ffile = {'\\path\143' '\\path\204' '\\path\450'};
RAW = {'450' '143'};
allind = zeros(size(RAW));
for i = 1:numel(RAW)
    for j = 1:numel(ffile)
        if strfind(ffile{j},RAW{i})
            allind(i) = j;
            break;
        end
    end
end
allind

[chlor thanks]

Very strange.. I tried this code with smaller size cell arrays (such as ffile, RAW here in your example) it works just fine, but for some reason it doesnt work with my (fullfiles 1×101 cell array and RAW 8×1 cell array)

I did test out the sample code with RAW being {'450'; '143'} and it works just fine as well..

[chlor thanks]

I do really appreciate the creativity of this for loop idea, it doesnt require additional matlab knowledges for more complex commands, thanks for sharing!

[darova]

• but for some reason it doesnt work with my (fullfiles 1×101 cell array and RAW 8×1 cell array)

Can you show? I don't believe

[chlor thanks]

I cannot really do that... I am running out of ideas as well, but thanks for the alternatives