The scalar indexing function can be used to construct rtable objects of type Array, Matrix, or Vector.

In the construction of a Matrix, the scalar[x] indexing function specifies a Matrix whose entries have the value x on the main diagonal and the value 0 everywhere else.

The specification is the same in the construction of an Array.

In the construction of a Vector, the scalar[j, x] indexing function specifies a Vector which has the value x for entry j and the value 0 everywhere else.

Under normal circumstances, Maple only stores the value of x. To override this, specify a storage value.

$V≔\mathrm{Vector}\left(5\,\mathrm{shape}=\mathrm{scalar}\left[2,3\right]\right)$

$V≔\left[\begin{array}{c}0\\ 3\\ 0\\ 0\\ 0\end{array}\right]$

$M≔\mathrm{Matrix}\left(1..4\,1..4\,\mathrm{shape}=\mathrm{scalar}\left[3\right]\right)$

$M≔\left[\begin{array}{cccc}3& 0& 0& 0\\ 0& 3& 0& 0\\ 0& 0& 3& 0\\ 0& 0& 0& 3\end{array}\right]$