HP HP-28S - Page 266

~GET (Get an Element of ~COV)
Given p and q, each indicating either the first or second position in
~PAR extract the rs element from ~COv, where rand s are the cor-
responding first or second elements in ~PAR.
~GET is called by ~X2, ~Y2, and ~XY with the following arguments.
• For ~X2, P
• For ~Y2, P
• For ~XY, P
1 and q
2 and q
1 and q
Arguments
2:
1 or 2
1 :
1 or 2
Program
:COI.}
:PAF.:
DUP
5 F~OLL
GET
::;~·lAP
4 F.:OLL
GET
2 "LIST
GET
I ENTER I
CJ LGET I STO I
1.
2.
2.
Results
2:
1 :
rs element of 2:COV
Comments
Begin the program.
Put the covariance matrix on the
stack.
Put the list of statistics param-
eters on the stack.
Make a copy.
Move p to level 1.
Get r, the pth element in ~PAR.
Move ~PAR to level 1.
Move q to level 1.
Get s, the qth element in ~PAR.
Put { r, s } on the stack.
Get the rs element from ~COv.
End the program.
Put the program on the stack.
Store
the program as ~GET.
28: Programming Examples 265