Date:         Fri, 9 Mar 90 16:52:29 -0500
Subject:      hp28s


Here is an easy to use expanded plotting program that works  very
much  like  the  DRAW  found  in PLOT MENU.  To use the program simply
store the expression to be plotted in  EQ  and  enter  the  number  of
displays  by  which  you wish to expand in level 1 of the stack.  Once
the program begins, it will plot one display at a time up the  y-axis.
After  each  display is plotted the program will stop and allow you to
digitize or create an image string .  Press ON in  order  to  continue
plotting the next display.  If at any you wish to stop the plotting of
a display, simply press on to halt,and  press  ON  a  second  time  to
continue  plotting the next display.  If at any time you wish to abort
the program during the plotting of a display  press  ON  three  times.
Note  that  the  program  will  respect the PPAR of the user in such a
manner that will allow for the expansion of any valid PMIN  and  PMAX.
Tshortened  to  104 bytes.  Let me know any thoughts you might have on
possible improvements.

                                        Affably,
                                        Rick Grevelle

         'SDRW'

    <<  # 241AAh  SYSEVAL  3  DROPN  -  IM  ABS  ->  ppar  height
       <<   1  -  -2  /  DUP  NEG  FOR  frame  frame  height  *
           (0,1)  *  CENTR  # 249C9h  SYSEVAL  # 1FF0Ah  SYSEVAL
           ppar  # 242A2h  SYSEVAL  STO  NEXT     >>    >>

    P.S. The SYSEVAL addresses used here will not crash your memory.

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