All entries of matlab array except certain index

Alec Jacobson

September 07, 2011

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Say you have a matrix D:

D = [1 2 3 4 5];

And you want to be able to suck out all entries that are not index i. You can do this with the following:

D(1:end ~= i)

So then the following is produced

i = 1;
D(1:end ~= i)
ans =

     2     3     4     5

i = 2;
D(1:end ~= i)
ans =

     1     3     4     5

i = 5;
D(1:end ~= i)
ans =

     1     2     3     4