If statement in loop with AND OR operands

I need an IF statement in a loop. I need a part of a script to skip where;

(Outcome is 11_right OR Outcome is 21_right) AND (ERP = earlyP3)

Tried both lines below but get "Operands to the || and && operators must be convertible to logical scalar values."

if ((Outcome{j} == '11_right') || (Outcome{j} == '21_right')) && (ERP{l} == 'earlyP3')

Also tried

    if ismember(Outcome{j}, ['11_right', '21_right']) && ismember(ERP{l}, ['earlyP3']) 

Answer 1

[James Tursa]

The problem is that the comparison Outcome{j} == '11_right' is an array comparison, not a scalar comparison. I.e., the string is an array of characters, so the == operation compares each element and gives an array result. What you want to use is a string comparison function such as strcmp. E.g.,

strcmp(Outcome{j},'11_right')

https://www.mathworks.com/help/matlab/ref/strcmp.html?searchHighlight=strcmp&s_tid=srchtitle_strcmp_1

And there are related functions such as strcmpi that ignore upper vs lower case in the comparison, etc.

[DavidL88]

Thanks James.