MATLAB: Subscript indices must either be real positive integers or logicals.while using indexing

array index

Hi all,
After performing some processing, now the variable 'a' contains [2 5 9].
Let say i have another variable 'b', variable 'b' is pre-initialized to be zero depending on a length of input, let say 10. b = [0 0 0 0 0 0 0 0 0 0];
What I want is, the elements that are stated in variable 'a' should be set ONE in variable 'b'. b= [0 1 0 0 1 0 0 0 1 0]
I did make sure variable 'a' contains only positive integers.
 have added this line "a=round(a); b(a)=1;"
'a' can only be positive integers, I confirm and have checked.
I still I got the same error… Appreciate any idea, thanks

Best Answer

Use clear all and then copy-paste-execute
 a = [2 5 9];
 b = [0 0 0 0 0 0 0 0 0 0];
 b(a) = 1
Does that do the trick?
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