occrency text array number

Hey every one , a small question :)

how can i determine the umber of occrancy in big arraw (481* 81)

I give a little exemple , with my primary script for that :)

Any help please :)

tableau_string=textdata

nb_rows=length(tableau_string(:,1)) %481 nb_col=length(tableau_string(1,:)) %80

count=0

for s=1:1:nb_rows

for i=1:1:nb_rows for j=1:1:nb_col if tableau_string(i,j)== tableau_string(s,1) count=count+1 end end end

tableau_string(s,2)= count

end

[Firas]

??? Undefined function or method 'eq' for input arguments of type 'cell'.

Error in ==> Untitled at 14 if tableau_string(i,j)== tableau_string(s,1)

Answer 1

[Guillaume]

One way of doing it:

tableau_string = {'3.5' 'alain' '3.5' 'alain'; 'alain' '' 'alain' 'test'; '' 'test' '' 'test'; '5' 'test' '5' 'test'};

[strings, ~, position] = unique(tableau_string(:));
count = accumarray(position, ones(1, numel(tableau_string)));
stringcounts = [strings num2cell(count)] %if you want it all in a cell array

You could use histc or hiscounts instead of accumarray for the same result.

[Firas]

thank you Guillaume :)