Andreas, I think the categorical times method is you're looking for:
>> tab = table(categorical({'true','false','false','null'}',{'true' 'false'}), ...
categorical({'one','one','many','many'}'), ...
'VariableNames',{'cat1' 'cat2'})
tab =
cat1 cat2
___________ ____
true one
false one
false many
<undefined> many
>> tab.cat3 = tab.cat1 .* tab.cat2
tab =
cat1 cat2 cat3
___________ ____ ___________
true one true one
false one false one
false many false many
<undefined> many <undefined>
Hope this helps.
Best Answer