HP HP-28S - Changing Directories

Program
:~.
.j ROLLO
t·~ E)-n
m 1 ""LIST
""RRRY
I ENTER I
~ MEDIAN I STO I
Comments
Move the median to the proper
stack level.
Increment j and repeat the loop.
Make
the list { m }.
Combine all the medians into an
m-element vector.
End the defining program.
Move
the orginal ~DAT to level
1.
Restore ~DAT to its previous
value.
End the program.
Put the program on the stack.
Store
the program as MEDIAN.
Example. Calculate the median of the data on page 268. (This exam-
ple assumes
you've keyed in the data.) There are two columns of data,
so MEDIAN will
return a two-element vector.
Calculate
the median.
I USER i
MEDI
3:
2:
1: [ 14.5 9.5 ]
amGImI!lIDlRmllDllll1m!I
The medians are 14.5 for the first column and 9.5 for the second
column.
Changing Directories
This section contains two programs:
• UP gives you a
menu of parent directories.
•
DOWN gives you a menu of subdirectories.
These
programs have no utility for those who always remember their
entire directory structure
and know exactly where they are at all
times. For those
who occasionally become confused, these programs
are helpful.
28: Programming Examples 275