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════════════════════════════════════════════════════════════════════════════
THE 'FDplot' FUNCTION/DATA PLOT AND PAIRED STATISTICS.
(C) 1992
════════════════════════════════════════════════════════════════════════════
Abri Technologies, Inc., HCR62 Box 100K, Cacapon, WV 25422 USA
════════════════════════════════════════════════════════════════════════════
┌───────┐
┌────┴──┐ │ (Tm)
──┤ │o ├───────────────────
│ ┌────┴──┐ │ Association of
│ │ ├─┘ Shareware
└──┤ o │ Professionals
─────┤ ╥ ├────────────────────-
└───╨───┘ MEMBER
This is Shareware and not Public Domain Software. Examine this free for
30 days and if you find it useful please send $15 registration to ATI You
will receive all updates and latest corrections to the software and at
least three months software support.
** Please read the shareware agreement near end of this file and use the
registration form in file 'REGISTER' which also contains information
about other ATI software.
┌────────────────────────────────────────────────────────────────────────────┐
│ ** FDplot Plus ** │
│ │
│ An enhanced college level Scientific Plotting/LR-Stat software package is │
│ also available. More information is available in the file 'REGISTER' │
└────────────────────────────────────────────────────────────────────────────┘
FILES INCLUDED:
INSTALL.BAT (optional installation file)
SETUP.EXE (for graphics card setup)
README.DOC (this file)
REGISTER (registering and ATI product info.)
MENU.BAS
PLOTN.BAS
STAT.BAS
T3.BAS
VMODE.EXE
INTRODUCTION:
FDplot is an inexpensive scientific function/data plotting software
for the IBM-PC intended for high-school or college students and
instructors.
It is an alternative to expensive/difficult-to-use function/data plotting
packages and is handy for general math/science, class and laboratory use.
Some advantages are:
(a) Menu driven, quick and easy to use. It will plot functions with
less fuss than most scientific graphing calculators.
(d) graphs can be displayed on overhead projectors with adaptors for
audio-visual instruction or printed on paper for student assignments.
(a) No programming/compiling required - functions and data are entered
in BASIC syntax while the program is running.
(c) program automatically calculates and selects "nicest integer graph
scales" to accommodate all function and data.
COMPUTER REQUIREMENTS:
This software requires GWBASIC or QBASIC and a minimum of CGA 640x200
MONO graphics capability and should run on most PC's. A hard disc is
recommended.
INSTALLATION:
You can use the INSTALL.BAT which creates a directory on a hard disc
and copies the software to the directory.
Alternatively, at any time you can create a directory you want the
software in - example:
MD C:\USR\PLOT
and then copy the software files from diskette to directory
COPY A: C:\USR\PLOT
SETUP:
At least a CGA mono 640x200 monitor and graphics-card is required.
The included SETUP program will select various CGA, EGA and VGA
graphic modes.
You can experiment with the VMODE program to determine the graphics
capability if you don't know what it is. VMODE does not affect files,
only the video mode.
You can even edit T2.BAS (line 120) to suit your unique graphics card
(after using SETUP).
TO RUN THE SOFTWARE:
Just type MENU and make selection.
If you get any error messages while running the program it is likely
due to wrong setup - SCREEN #, VMODE #, and resolution combination.
OTHER INFORMATION:
A. ELLIPSA.BAS
The program has been included for calculating ellipsoid surface area
and is a part of the menu selection. If your institution has specific
programming needs please contact us for very reasonably priced custom
programming.
B. Plotting Notes:
(A) MS-DOS has a printer "GRAPHICS" command that permits you to print
screen graphics on a printer. After you use the dos GRAPHICS command
you can print the screen graphics on the printer anytime by pressing
the SHIFT-PrtSc keys. Make sure you have selected the right printer
with the graphics command. If it emulates the IBM graphics printer, no
printer selection is required after the GRAPHICS command.
(B) The program automatically selects the "nicest" axes and scales for
the functions to plot. It is possible to somewhat affect the graph
scales by selecting a special plot-data set made up of only two data
pairs which are beyond the limits of the functions - i.e. you can
define the diagonal corners of the graph. The program always defines
the axes/scales to accommodate the largest function and data given.
(C) For most cases just hit ─┘ for "function detail?" request. The
program estimates the optimum plot step size. There may be occasional
cases where the function graph looks too ragged. In that case RE-PLOT
the function and choose a number between 0 and 1.0 (the higher it is
the more detail). Alternatively if it takes too long to plot choose a
lower number between 0 and -1.0.
C. Plot Data Definition.
Again follow directions to define data for plotting. Data is stored in
ascii file "PLOTD".
If you wish to write these files with an ascii editor their format is
as
Ascii file:
┌────────────────────┐
line 1 │N │ N= # of data sets.
line 2 │X1,Y1 │ data pair separated by comma.
line 3 │X2,Y2 │ .
line 4 │X3,Y3 │ .
. │ . │ .
. │ . │ .
. │ . │ .
. │XN,YN │
last line │ -2 │ -2 OR correlation value for statistics.
└────────────────────┘
D. Paired statistics program.
For N (X,Y) pairs it calculates mean, SD, variance, correlation,
covariance, and Linear Regression slope and intercept.
The data is stored in the ascii file PLOTD in format as above in C.
E. MENU.BAS Program
You can easily add to the menu program by inserting new lines between
lines 1000 and 1520. Do not delete line 1520 "EXIT"," " since the
program looks for it. The format of these lines is
<line number> DATA "<purpose description>","<program name or list filename>"
Line number is any from 1000 to 1499. Program names should have full
extensions - examples: STAT.BAS, EDIT.EXE, MEM.COM.
DISCLAIMER and SHAREWARE - AGREEMENT:
Users of FDplot must accept this disclaimer of warranty: FDplot is
supplied as is. The author disclaims all warranties, expressed or
implied, including, without limitation, the warranties of
merchantability and of fitness for any purpose. The author assumes no
liability for damages, direct or consequential, which may result
from the use of FDplot."
FDplot is "shareware software" and is provided