Command Reference : Matrix Language
  
Matrix Language
EViews provides you with tools for working directly with data contained in matrices and vectors. You can use the EViews matrix language to perform calculations that are not available using the built-in views and procedures.
The following objects may be created and manipulated using the matrix command language:
matrix: two-dimensional array.
vector: column vector.
sym: symmetric matrix (stored in lower triangular form).
scalar: scalar.
rowvector: row vector.
coef: column vector of coefficients to be used by equation, system, pool, logl, and sspace objects.
We term these objects matrix objects (despite the fact that some of these objects are not matrices).