I have a 6266x1 cell "teste1" and I want to create "teste2":

if "teste1" is not 0, I want a 'V';

if "teste1" is 0, I want to compare 2 other different string cells and the result would be from 1 to 5 (or 0, if no condition was satisfied).

How can I proceed? I tried like this but "Undefined operator '~=' for input arguments of type 'cell'" :

teste2    = teste1;
if teste2(:)~=0
    teste2(:)='V';
elseif teste2(:) == 0
    mask       = strcmp(catracio1, 'low') & strcmp(catpreco, 'low');
    teste2(mask) = {'1'};
    mask       = strcmp(catracio1, 'medium low') & strcmp(catpreco, 'medium low');
    teste2(mask) = {'2'};
    mask       = strcmp(catracio1, 'medium') & strcmp(catpreco, 'medium');
    teste2(mask) = {'3'};
    mask       = strcmp(catracio1, 'medium high') & strcmp(catpreco, 'medium high');
    teste2(mask) = {'4'};
    mask       = strcmp(catracio1, 'high') & strcmp(catpreco, 'high');
    teste2(mask) = {'5'};
else
    teste2(:)=0;
end

[Walter Roberson]

What are you data structures here? Is it that case that for every teste1 entry, teste1(K), that there is a corresponding catricio1{K} and corresponding catpreco{K} entry? And is it correct that for the locations where test1(K) is 0, you want to compare the two corresponding string entries and if they are equal then you want to assign a character corresponding to the class number to teste2{K} ? And is it the case that if the two strings are not equal, or the two strings are something other than one of those 5, that you want to assign '0' to teste2{K} ? But where test1(K) was non-zero you want to assign 'V' to teste2{K} ?

[Walter Roberson]

Duplicated by later http://www.mathworks.com/matlabcentral/answers/309161-i-have-a-column-cell-array-teste1-and-i-want-to-create-teste2-if-teste1-is-not-0-i-want-a-v which has an answer.