Simple inverse indexing question...

2012 4 19
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Suppose you have;
t = 1:0.1:10;
x = rand(1,100);
ind = [1:10,60:61,80:100];
I want a single expression which gives all the other indexes of t or x other than 'ind'. In this case [11:59,62:79].
This can't be hard, but i just cannot seem to find the answer. The simplified reason for which this is needed is:
figure();
plot(t(ind),x(ind),'r');
plot(t(~ind),x(~ind),'b');
And I don't want new variables like x2 = x; x2(ind) = [];
Thank you in advance!

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Mats
Mats 2012-4-19

3 个投票

Somehow the response from Andrei Bobrov got lost, but he had the answer!
setdiff(find(x),ind) of setdiff(1:length(x),ind)

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