indexing complex numbers
5 views (last 30 days)
Show older comments
hi,
I'm trying to index the arrays of as explained below.
a = [-1+i 1+i 1+i 1+i -1+i -1-i -1+i 1+i 1-i -1+i -1-i -1+i -1-i -1-i -1+i -1-i]
b = [00 01 11 10]
-1+1 will be replaced by 00
1+i will be replaced by 01
1-i will be replaced by 11
-1-i will be replaced by 10
the problem is that, any method of indexing i try gives me the same error message saying "Subscript indices must either be real positive integers or logicals." Pls i dnt knw wat to do.
Thanks in advance
0 Comments
Accepted Answer
Rick Rosson
on 25 Nov 2011
x = ( 1 + real(a) ) / 2;
y = ( 1 - imag(a) ) / 2;
b = [ y ; x ];
3 Comments
Walter Roberson
on 25 Nov 2011
It will only work for +/-1 +/-1*i . If you have other fixed sets of values with fixed mappings, sometimes you can create simple mapping expressions like Rick shows, and sometimes you cannot.
More Answers (0)
See Also
Categories
Find more on Matrix Indexing in Help Center and File Exchange
Products
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!