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read.me
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1992-01-11
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Element Manager Version 1.8
READ.ME
ELEMAN18.ZIP should contain:
Length Method Size Ratio Date Time CRC-32 Attr Name
------ ------ ----- ----- ---- ---- ------ ---- ----
320216 Implode 146787 55% 01-11-92 22:50 5eba76d4 --w ELEMAN.EXE
77 Shrunk 56 28% 12-22-91 04:45 6efc2200 --w ELEMAN.CFG
75 Shrunk 52 31% 12-21-91 10:11 b2a8c9b8 --w MONO.CFG
133541 Implode 48952 64% 01-11-92 23:02 c8f6dc57 --w ELEMAN.DOC
22803 Implode 7718 67% 12-22-91 13:13 f6a3143a --w SATNAME.DAT
5616 Implode 2165 62% 12-10-91 07:01 3d1079ec --w SEMIVIS.SEL
754 Implode 404 47% 12-10-91 07:02 a678f419 --w VERYVIS.SEL
5561 Implode 2668 53% 01-11-92 16:44 a48ac2e4 --w READ.ME
------ ------ --- -------
488643 208802 58% 8
READ.ME size & checksum (CRC-32) vary with editing. Others should be
consistant.
The plus sign (+) is currently being assigned a value of zero in the
checksum of element sets. However, most of my updating programs (IT, Graf
Trak II in particular) want a value of two (2) for the plus sign. I've
implemented two possible ways to fix files for this eventuality.
If you want to leave the plus sign in the file, you may start the program
with the /Z option. This assigns the value of two (2) to the plus sign.
Because of this if you run the fix checksums part of the program, any
element sets with plus signs will fail causing the program to create new
files with corrected checksums reflecting the value of two for the plus
sign. Then, programs that use this convention will accept element sets for
input once again.
The second way around this problem is to remove the plus sign. Element
Manager will strip a plus sign and replace it with a blank space. It will
then intentionally corrupt the checksum value, and run the fix checksums
routines of the program. You will end up with a file with no plus signs and
correct checksums for all elements.
If the size of Element Manager's main program is somewhat disconcerting,
you might think about using PKLITE or a similar program. These programs
shrink, implode, compact (whatever) the program to a smaller file that will
still execute from DOS.
If you have a monochrome system you should delete ELEMAN.CFG (color
configuration file) and rename MONO.CFG to ELEMAN.CFG. Or you can start the
program including /M with any other parameters you specify on the command
line.
To quickstart just type:
ELEMAN /Ifilename.ext
where filename.ext is the name of a file containing some 2-line elements.
If you've downloaded this file and don't have any 2-line element sets to
"play" with, then enter:
ELEMAN /Ieleman.doc
This will start the program and load the DOC file as it's element file.
Since the documentation contains lots of examples of 2-line element sets
for the purposes of discussion, this will provide you with a few elements
to play around with. Note that many of these elements are duplicates. When
you start the program in this manner, it will extract only the 2-line
element sets contained in the DOC file and output them to a new file named
FIXED.TLE. It will then load FIXED.TLE into memory. You can go to the
View/Edit area of the program (option available from the File Utilities
Menu) and look at the resulting output. If you wish to clean up this file
(ie: remove the duplicates) go to the File Utilities Menu and select the
Duplicate checker. This function will extract only the most recent set of
elements for each Norad Catalog Number Satellite and write them to the file
NODUPS.TLE. To load this cleaned up file, select option 1 from the File
Utilities Menu and type in NODUPS.TLE. You can edit the elements, examine
them for information on their age, the perigee and apogee altitudes and
more.
The program is really written for absolute addicts of satellite tracking
who keep lots of elements handy. If you're a beginner in tracking, read the
DOC file. It will explain what elements are all about and where you can
find more up to date element sets and various shareware satellite tracking
programs.
If you're an experienced user, and want to use some of the advanced
functions to select out elements by certain criteria then, I'd recommend
you review the DOC file to learn of the capabilities of the program. There
really isn't any quickstart for you folks. However, if you absolutly abhor
doc files, try typing:
ELEMAN /H
This will print out a help screen. You may be able to extract enough info
to get you started.
An ELEMAN.CFG file is provided. You might want to change this file to force
color operation or use different default filenames. From the File Utilities
Menu select Edit Configuration. Don't try and do this with a text editor
until you are familiar with the meaning of each entry in the .CFG file.
note: Elemant Manager will "Never" corrupt an input file. The only
exception to this is the FIXED.TLE file. The program will regularly
overwrite this file. If you import element from a text file, I'd recommend
you save the fixed elements to a new file immediatly so you won't lose
them. However, as long as you don't erase the source text file, you can
always recreate the FIXED.TLE file.
-end-