The size command computes the size of a matrix using MATLAB®.

Executing the size command returns an integer list with n elements for an n-dimensional object.  For example, a three-by-four matrix is two-dimensional, and returns a list with two elements. Each element represents the size of the corresponding dimension. The three-by-four matrix returns the list [3, 4].

To compute the size of a Maple variable, you should use Matlab[dimensions]. Calling size when X is a Maple variable causes X to be copied into the MATLAB® memory space before the MATLAB® size command is called. If X is already a MATLAB® variable (that is, X is a string), then the size is immediately and efficiently computed.

$\mathrm{with}\left(\mathrm{Matlab}\right)\:$

$\mathrm{maplematrix\_a}≔\mathrm{Matrix}\left(2\,3\,\left[\left[1\,2\,3\right]\,\left[3\,4\,5\right]\right]\right)$

$\mathrm{maplematrix\_a}≔\left[\begin{array}{ccc}1& 2& 3\\ 3& 4& 5\end{array}\right]$

$\mathrm{maplematrix\_b}≔\mathrm{Matrix}\left(\left[\left[8\,7\right]\,\left[6\,3\right]\,\left[2\,1\right]\right]\right)$

$\mathrm{maplematrix\_b}≔\left[\begin{array}{cc}8& 7\\ 6& 3\\ 2& 1\end{array}\right]$

$\mathrm{Matlab}\left[\mathrm{dimensions}\right]\left(\mathrm{maplematrix\_a}\right)$

$\mathrm{Matlab}\left[\mathrm{dimensions}\right]\left(\mathrm{maplematrix\_b}\right)$

$\mathrm{Matlab}\left[\mathrm{setvar}\right]\left(''matlabmatrix\_a''\,\mathrm{maplematrix\_a}\right)$

$\mathrm{Matlab}\left[\mathrm{setvar}\right]\left(''matlabmatrix\_b''\,\mathrm{maplematrix\_b}\right)$

$\mathrm{Matlab}\left[\mathrm{size}\right]\left(\mathrm{maplematrix\_a}\right)$

$\mathrm{Matlab}\left[\mathrm{size}\right]\left(\mathrm{maplematrix\_b}\right)$

$\mathrm{Matlab}\left[\mathrm{evalM}\right]\left(''matlabmatrix\_c=matlabmatrix\_a*matlabmatrix\_b''\right)$

$\mathrm{Matlab}\left[\mathrm{size}\right]\left(''matlabmatrix\_c''\right)$