# MATLAB: Matrix (Resultant from an Expression) Indexing

indexing

Say I want to get the length of an array A . Normally I would do:
[m,n]=size(A)
And then use the n in other expressions.
But what if I want to get my n immediately; is there anything of the form
n=size(A)(2)
analogous to how I would pull the second element n from an array N using
n=N(2)
?

#### Best Answer

• Yes
A = randn(20,10);size(A,2)size(A,1)
So
N = size(A,2);
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