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Simtel MSDOS - Coast to Coast
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lg_read.me
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1994-03-07
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LASER GRAPHICS PROGRAM DOCUMENTATION FILE
This graphics package provides an easy means of generating data plots. To
use this software, copy all of the files into a sub-directory on your hard
disk. It is best to create a separate subdirectory for these programs. Then
unpack the programs from the archived LG_EXE*.ZIP files. You will need to use
PKUNZIP or an equivalent program to do this. After uncompressing the files,
type INSTALL and answer all questions. The programs will then be installed
and ready to use. Type in PLOTHELP and read the OVERVIEW topic, and then
run the demo program by typing in DEMO. Then run some of the example plots
as directed in PLOTHELP topic EXAMPLES. Beyond this brief introduction, read
the printed documentation and the help files.
If you have also downloaded the LG_DOC*.ZIP files, you may uncompress them
and print the manual using an HP Laserjet. To print the files, do not use
the PRINT command; instead copy the files to the printer using the copy
command:
COPY /B G3*.HP LPT1:
Do not omit the /B option! If you do, the files will be incompletely printed.
Be forewarned that the documentation is over 100 pages long, and includes
example plots imbedded in the document. It will take 20 minutes or more to
print. Note that the documentation files are also in .zip form and must
be unzipped.
Function: To generate plots of various types.
System requirements: PC or compatible,
Graphics screen: CGA, EGA, VGA, or HGC
Memory: 512 K or more
Printer: Epson 8 or 24 pin
C. Itoh Prowriter
HP Laserjet
Dos: Version 3.0 or higher
Math Coprocessor: Not necessary, but used if present
Hard disk: Required
Plot types: Single line plots
Multiple line plots
Three dimensional perspective plots
X-Y plots
Polar Plots
Scatter diagrams
Vector diagrams
Output: High resolution plot generation (up to approximately
2400 by 3000 pixels)
Low resolution screen dumps
Save screen plots to disk file
Plot disk files compatible with some word processors
Additional Features: Gallery program to review previously generated plots
Hidden line removal on three dimensional plots
Optional axis auto-scaling
Optional user-defined axis numbering and tic marks
Automatic conversion to log scale
Automatic error bars
Split screens (multiple plots per page)
Disk paging if bit-map is too large for RAM
Support for Hewlett-Packard Laserjet format soft-fonts
Can be used as graphics driver
Advantages: The programs are simple enough to plot a data file
with a single command, yet powerful enough to generate
very high-quality plots on a laser printer.
Virtually all plot characteristics may be user defined,
but default settings are included so that the user does
not need to bother with unnecessary details.
All plot commands may be entered on the DOS command line.
This allows a string of plot commands to be put in a
batch file for execution without requiring constant user
intervention.
Disadvanteges: Slow operation for some plots: For high-resolution
plots, the number of pixels which must be handled
can be tremendous. For example, a 2000 by 2500 pixel
laser printer plot will have five million pixels which
must be accounted for. On a basic 4.77 Mhz 8088
computer, handling this many pixels can take an
annoyingly long time. Even for a low-resolution plot,
a large data file and slow disk drive will slow things
down.
Relatively steep "learning curve": the software was
written to be very easy to use. This was accomplished
at the expense of making it less easy to learn. It is
hoped that the help files and demo will ease the novice's
difficulties.
Liability: The software is provided as is; the authors assume
no liability for any problems or expenses arising
from its use or misuse.
Documentation: On-line help files
Printed documentation will be sent to registered users
Licensing: Any user, registered or not, may use and distribute this
software at will, provided:
1) the software is not modified,
2) no part of the software is sold for a charge
exceeding a nominal copying charge.
When copying the software, please distribute only the
original archived files (LG*.ZIP) and this file
(LG_READ.ME). This ensures that all users will obtain
a full working copy.
Registration: If you find this software to be useful, a $49
contribution will be appreciated. Users contributing
this amount will receive the next update of Laser
Graphics.
Registration may be mailed to:
J. M. Baden
1500 Mill Creek Court
Marietta GA 30060
When registering, please specify the following:
1) Laser Graphics version you presently have
2) Preferred disk media for update (5.25" 360K or
1.2M, or 3.5" 720K or 1.44M).
3) Your address