If statement in loop with AND OR operands

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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'])

Accepted Answer

James Tursa
James Tursa on 10 Nov 2021
Edited: James Tursa on 10 Nov 2021
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')
And there are related functions such as strcmpi that ignore upper vs lower case in the comparison, etc.

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