Create inverse logical array in Matlab

Question

I have a logical array, isLand, that is true if the index is over land and false if the index is not over land, like the ocean. How can I easily create another logical array, isOcean, which is the inverse of isLand. All the ones in isLand will be zeros in isOcean and vice versa.

I know I can do this using a for loop but I feel there is a much better way.

gnovice · Accepted Answer · 2023-03-22 01:56:31Z

11

Just use the logical NOT operator:

isOcean = ~isLand;

Easy-peasy lemon squeezy! ;)

edited Mar 22, 2023 at 1:56

answered Sep 14, 2010 at 18:32

gnovice

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1 Comment

Elpezmuerto Over a year ago

Great answer, I was going to use the find function that this is much better

user85109 · Accepted Answer · 2010-09-15 13:26:16Z

4

As gnovice tells you, ~ (the not operator) is the right answer of course, but you can also use

isOcean = isLand == 0;

This should work too:

isOcean = xor(1,isLand);

There are always several ways to solve any problem in MATLAB.

answered Sep 15, 2010 at 13:26

user85109

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