Basic operations with matrix in a program ...

[jtamezga]

How can you get the average or quartile1 or covariance of a matrix in a program?

Hp Prime can get special functions like eigenvalues of any matrix in a program, but simple stat commands gives a "undef" message ...

EXPORT Destats()
BEGIN
LOCAL mat, res;
res:=[[1],[1]];
IF M0=[[0]] THEN
mat:=EDITMAT(M0);
//RETURN M0;
ELSE
INPUT({{M0,[4]}},"Matrix");
mat:=M0;
//RETURN mat;
END;
res(1,1):=23;
res(2,1):=quartile1(mat);
EDITMAT(res);
END;