plot script question

[j y]

Hi,
i have a unix software that has a function
"plot=pic(x,y)".This draws the row x and column y of
image file pic and on. This will
refreshes the plot each time and does not keep the
previous one(s). Now, to plot and keep adding
(appending) without deleting the  previous drawn
lines, the command would be: 
"plot=pic(1,1),pic(2,2),pic(3,3),..". This will plot a
range of rows 
and coulmns (by appending). how can i automate this so
that user can  enter range of rows and columns to
plot?.
Jim

__________________________________________________
Do You Yahoo!?
Yahoo! GeoCities - quick and easy web site hosting, just $8.95/month.
http://geocities.yahoo.com/ps/info1