when the result of strmatch has no value, then how can I change it to 0?

I would like to search certain value for example 'parameter A'.

But parameter A is sometimes included but sometimes not included in texts what I'd like to check.

and the function I seach it is strmatch because it simply indicate the number of string where parameter A is included.

So I would like to use 'if' as below.

for i=1:handles.fn
    
    aa.aa(i) = strmatch('parameter A', data(i));
    if ~isnan(aa.aa(i))
        aa.bb(i) = 1
    else aa.bb(i) = 0
    end;
end;

But failed as like below, in case data(3).embi has no 'parameter A'.

aa = 
struct with fields:

aa: [503 499]
bb: [1 1]

Unable to perform assignment because the left and right sides have a different number of elements.

How can I handle this?? I mean how can I make bb has '0' when data has no 'parameter A'??

Answer 1

[KSSV]

REad about contains. You may use them. Also have a look on strcmp.

[병주 김]

thanks~ I will check again