Matrix (Resultant from an Expression) Indexing

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A. 2013-12-26

评论： Wayne King 2013-12-29

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)

Wayne King 2013-12-26

编辑：Wayne King 2013-12-26

Yes

A = randn(20,10);
size(A,2)
size(A,1)

N = size(A,2);

Did you read the help?

A. 2013-12-29

Thank you. I did read the help, but it seems not attentively enough.

Am I assuming similar functions will follow the same pattern f(A,n) , where n is [1 to max size of the output array].

Wayne King 2013-12-29

yes

MATLAB Language Fundamentals Matrices and Arrays Matrix Indexing

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