Multiple left-hand-side partial assignment in Matlab -

consider following matrix:

a=[1,2,3]

therefore

size(a)=[1,3]

i want assign second dimension 3 variable n. efficient way?

why following not working?

[[],n]=size(a)

  n= num2cell(size(a)){2}

this simplest, , works a number of dimensions:

n = size(a,2);

if a guaranteed have 2 dimensions, use

[ m, n ] = size(a);

and if don't need first variable, in recent versions of matlab can write

[ ~, n ] = size(a);

as things have tried:

[[],n]=size(a) not work because [] not variable can assign anything.
n= num2cell(size(a)){2} not work because can't directly index in matlab. need temporary variable: temp = num2cell(size(a)); n=temp{2}. or dispose of num2cell , do: temp = size(a); n=temp(2).

Detect