Basic operations with matrix in a program ... - Printable Version +- HP Forums (https://www.hpmuseum.org/forum) +-- Forum: HP Calculators (and very old HP Computers) (/forum-3.html) +--- Forum: HP Prime (/forum-5.html) +--- Thread: Basic operations with matrix in a program ... (/thread-15088.html) Basic operations with matrix in a program ... - jtamezga - 05-29-2020 05:11 PM 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; RE: Basic operations with matrix in a program ... - victorvbc - 05-29-2020 06:02 PM These are CAS commands, you can execute them in PPL three ways, as far as I know. 1. Use a "CAS." prefix. Ex.: CAS.covariance(); 2. Execute the comand as a string with CAS(""); 3. Make your program a CAS function by checking the box when creating it, this will automatically add #cas and #end to it. RE: Basic operations with matrix in a program ... - StephenG1CMZ - 05-29-2020 07:46 PM If the built-ins don't help, you might find some of the Basic Linear Algebra Subprograms (BLAS Level 1) useful. https://www.hpmuseum.org/forum/thread-13613.html