From hyper!slee@autodesk.com Mon Nov 1 10:06:27 1993
From: hyper!slee@autodesk.com (Thomas Slee)
Subject: Re: PDB File residue numbering
To: autodesk!hyperchem@openlink.openlink.com (HyperChem e-mail group)
Date: Mon, 1 Nov 93 9:52:11 EST
Cc: uscience@nic.cerf.net (U.S. Science)
Jesse Salb writes...
|
| Certain PDB files (.ENT) have undetermined residues marked "UNK" for
| unknown. When a file containing UNKs is loaded into Hyperchem, the
| numbering of all the known residues is disrupted. Other programs such as
| Kinemage seem to handle UNKs well while preserving the residue numbering
| from beginning to end of the protein. Does anyone know of a workaround
| to this problem in Hyperchem?
| jsalb@novalink.com
|
Dear Dr. Salb,
I am having trouble reproducing this behaviour. Please could you send
me (slee@hyper.com) a file that exhibits this behaviouir and describe
what numbering you should get, and what you do get? Also, please
could you tell me what version of HyperChem you are using?
Tom
--
Tom Slee
Hypercube, Inc., #7-419 Phillip St., Waterloo, Ont. N2L 3X2
Internet: slee@hyper.com Tel. (519) 725-4040
________________________________________________________________________
From hyper!slee@autodesk.com Mon Nov 1 13:33:52 1993
From: hyper!slee@autodesk.com (Thomas Slee)
Subject: HyperChem EMail Group Poll Results
To: autodesk!hyperchem@openlink.openlink.com (HyperChem e-mail group)
Date: Mon, 1 Nov 93 10:36:56 EST
Thanks to the 56 of you who replied to the E-Mail group survey.
The results are as follows:
| 1. I don't want to see answers to other people's questions.
| Keep my mailbox clean and just reply to the respondent. 2
|
| 2. The current balance is about right. 26
|
| 3. I don't want to miss anything: send all answers to the group. 28
So, I'll continue sending most replies to the group. One exception is
if extra information is needed concerning a problem I'll generally just
e-mail that person, until we get the problem sorted out, whereupon
I'll send the solution (or lack of one!) to the group as a whole.
Thanks to those of you who said how useful they find the group.
Two other issues came up in the responses. One was a suggestion
for a News group. This is not something that can be initiated by
Autodesk as a service: there is a whole protocol to go through to
set up a new News group, including calls for discussion and calls for
votes. Currently the most applicable group is sci.chem: we do keep
an eye on that group, but certainly don't commit to answering questions
there at the moment.
The other issue was some kind of an archive of previous messages. As
you will know, we don't currently have an ftp site or any of this
capability. The input is useful, but I can't commit to acting on
it in the near future. Anybody wanting to know if we have had previous
messages on a given subject, please send your mail to
hyperchem-request@autodesk.com, and we'll do this manually.
Tom
--
Tom Slee
Hypercube, Inc., #7-419 Phillip St., Waterloo, Ont. N2L 3X2
Internet: slee@hyper.com Tel. (519) 725-4040
________________________________________________________________________
From uucp@autodesk.com Mon Nov 1 17:49:23 1993
Date: Mon, 01 Nov 93 17:22:56 BD2
From: CCATF@BRLNCC.BITNET
To: hyperchem@autodesk.com
hyperchem: how do you freeze torsion angles and optimize
geometries. thank you.
Dr. C. A. Taft
________________________________________________________________________
From hyper!hurst@autodesk.com Mon Nov 1 23:14:31 1993
Date: Mon, 1 Nov 93 18:35:27 -0500
From: hyper!hurst@autodesk.com (Graham Hurst)
To: CCATF@BRLNCC.BITNET, autodesk!hyperchem@openlink.openlink.com
Subject: Freezing torisons during optimization
Dr. C. A. Taft asked:
> hyperchem: how do you freeze torsion angles and optimize
> geometries. thank you.
This can be done by applying restraining forces to the torsion angles
that you wish to freeze.
1. Select a dihedral angle and name it with Select/Name Selection. Repeat
for all dihedral angles that you wish to freeze.
2. Use Setup/Restraints to add harmonic restoring forces. You must
specify the desired value for each dihedral angle (use Computed to
set it to the angle that the system currently has) and a force
constant which dictates how strongly the dihedral angle will be
"held" at the desired angle.
A force constant around 1000 should be strong enough to hold the dihedral
close to the desired value, and values a lot larger can make the
optimizers job more difficult. Although these do not perfectly "freeze"
the angle, they can be used to "steer" an optimiztion to a desired
conformation. Just remember to do a single point afterwards with the
restraining forces turned off to get a potential energy without the
restoring force.
This is covered in the reference manual on pages 175-177 and pages 48-50
of Part II of the Computational Chemistry Guide, though note that the
name changed from "Constraints" to "Restraints" in release 3 and it is
now in the Setup menu since they are available now for semi-empirical
as well as molecular mechanics calculations.
Hope this helps,
Graham
------------
Graham Hurst
Hypercube Inc, 7-419 Phillip St, Waterloo, Ont, Canada N2L 3X2 (519)725-4040
internet: hurst@hyper.com
________________________________________________________________________
From apa@pop.cc.adfa.oz.au Wed Nov 3 12:13:14 1993
Date: Wed, 3 Nov 1993 16:16:48 +1100
To: hyperchem@autodesk.com
From: apa@pop.cc.adfa.oz.au (Alan Arnold)
Subject: Printing orbital energy diagram from HC rel3 for Windows.
This seems a very simple Q and I hope the answer is not in the manual
(because I couldn't find it) but:
How do you print the orbital energy diagram that you create with
Compute:Orbitals?
I'm using Hyperchem release 3 for Windows.
----
Alan Arnold | e-mail: apa@pop.cc.adfa.oz.au
Chem. Department,University College | voice : +61 6 268 8080
Australian Defence Force Academy | fax : +61 6 268 8002
CANBERRA ACT 2601 Australia |
________________________________________________________________________
From jeg10@slc8.INS.CWRU.Edu Wed Nov 3 13:59:28 1993
Date: Wed, 3 Nov 93 12:28:17 -0500
From: jeg10@po.CWRU.Edu (Jennifer E. Grant)
To: hyperchem@autodesk.com
Subject: printing vibrational spectra
Reply-To: jeg10@po.CWRU.Edu (Jennifer E. Grant)
This may also be a simple question,
but how does one print out the vibrational
spectrum using Hyperchem 3.0???
--
Jennifer Grant Wer denkt,
Department of Biochemistry schafft.
Case Western Reserve University
________________________________________________________________________
From uucp@autodesk.com Wed Nov 3 15:45:27 1993
Date: Wed, 03 Nov 93 16:51:36 BD2
From: CCATF@BRLNCC.BITNET
To: hyperchem@autodesk.com
try copying orbitals to clipboard, you can use corel-draw or
other graphic program to print how you want.
dr. c. a. taft
centro brasileiro de pesquisas fisicas,Rio de Janeiro, BraSIL
also HELP: I have been promised final release rel 3 HC from
KaRYN Kambur, Autodesk, and so far have not received, i have
been unable to establish bitnet/internet contact with her.
I am interested in obtaininG the last release.
________________________________________________________________________
From uucp@autodesk.com Thu Nov 4 17:13:26 1993
Date: Thu, 04 Nov 93 11:49:47 BD2
From: CCATF@BRLNCC.BITNET
To: hyperchem@autodesk.com
I imagine any thing can be printed on screen using print command
or copying to clipboard then copying from any windows program.
dr. c. taft, centro brasileiro de pesquisas fisicas
rio de janeiro, brasil
help: unable to contact karyn kambur at autodesk to get
my copy of release 3. c. a. taft
________________________________________________________________________
From jeg10@slc5.INS.CWRU.Edu Thu Nov 4 17:13:40 1993
Date: Thu, 4 Nov 93 09:08:12 -0500
From: jeg10@po.CWRU.Edu (Jennifer E. Grant)
To: hyperchem@autodesk.com
Subject: when opening HINfile, Hyperchem cant find HIN keywords
Reply-To: jeg10@po.CWRU.Edu (Jennifer E. Grant)
We recently created a file containing an organic molecule
of interest, and one water molecule. having optimized the
system (geometry optimization) i saved it in its appropriate
HINfile. When i try and recall that particular file, the
program prints the error message:
does this mean that my file was garbled when it was saved?
Perhaps the HIN-file can be edited, i.e. a keyword inserted,
that will allow me to open this file?
much obliged
--
Jennifer Grant Wer denkt,
Department of Biochemistry schafft.
Case Western Reserve University
________________________________________________________________________
From mschriver@kean.ucs.mun.ca Thu Nov 4 17:20:47 1993
Sender: mschriver@kean.ucs.mun.ca
Date: Thu, 04 Nov 1993 10:55:32 -0230
From: mschriver@kean.ucs.mun.ca
Reply-To: mschriver@kean.ucs.mun.ca
To: hyperchem@autodesk.com
Subject: Printing Orbital Diagrams and Vibrational Spectra
Hyperchemists,
A few weeks ago I asked a question that is very similar to Alan Arnolds
concerning the printing of orbital energy diagrams. Most of the answers
I got concerned the printing of the contour plots of orbitals in the
main view screen not the printing of the energy level diagrams that Alan
and I are generating INSIDE the Orgitals box. I Have tried most of the
suggestions that came my way without sucess. There is one suggestion left
that I am still working on. A secondary problem is that the background
colour is black and the options do not seem to allow one to change the
colour of the backgrounds in the secondary screens (MO energy level
diagrams and the vibrational spectra). If Alan or Jennifer get simple
answers to their questions could you please put them on the net? Most of
the replies I got were to me personally and I think that there may be
others out there lurking on the net with the same problem(s).
I really appreciate the net and I would be interested in hearing of
publications that have used HYPERCHEM for semi-empirical calclations.
keep your hardware locks dry
Mel Schriver
Memorial Univ.
Newfoundland
Canada
________________________________________________________________________
From hyper!hurst@autodesk.com Fri Nov 5 00:42:51 1993
Date: Thu, 4 Nov 93 18:56:34 -0500
From: hyper!hurst@autodesk.com (Graham Hurst)
To: autodesk!hyperchem@openlink.openlink.com
Subject: Printing orbital energy levels and spectra
It may not be well documented, and it isn't ideal, but you *can* print
the orbital dialog box and the spectra dialog boxes from HyperChem as
long as you have another application to print the contents of the Windows
clipboard (such as Write or Paintbrush that come with Windows).
The procedure:
1. If you want black lines on white background, the secret incantation
is to change Window colour to White and Bond colour to Black under
File/Preferences.
2. Under Edit/Setup image, change Window to Top Level. This sets Chem
up to capture the topmost window on the screen. Check at least one
of Bitmap and Metafile and also check clipboard.
3. Get the dialog box you want on the screen (i.e. IR, UV or Orbitals).
4. Press the F9 key.
5. Bring up Paintbrush, Write, or another application and use Edit/Paste
(or equivalent). Crop, resize, annotate, etc. if the application
supports it and you want to, and then Print.
If you have any trouble, use the clipboard viewer to make sure the image
is getting into the clipboard.
All the data used to generate these graphs is available via scripts, so
if you have a spreadsheet or plotting program, you might want to use
scripts to put the numbers into a text file that you can import into
that program for plotting.
Hope this helps!
Graham
------------
Graham Hurst
Hypercube Inc, 7-419 Phillip St, Waterloo, Ont, Canada N2L 3X2 (519)725-4040
internet: hurst@hyper.com
________________________________________________________________________
From hyper!hurst@autodesk.com Fri Nov 5 00:46:04 1993
Date: Thu, 4 Nov 93 19:15:57 -0500
From: hyper!hurst@autodesk.com (Graham Hurst)
To: jeg10@po.CWRU.Edu (Jennifer E. Grant)
Subject: Re: when opening HINfile, Hyperchem cant find HIN keywords
Cc: autodesk!hyperchem@openlink.openlink.com
Jennifer E. Grant asks:
> We recently created a file containing an organic molecule
> of interest, and one water molecule. having optimized the
> system (geometry optimization) i saved it in its appropriate
> HINfile. When i try and recall that particular file, the
> program prints the error message:
>
> HIN keywords.>
>
> does this mean that my file was garbled when it was saved?
> Perhaps the HIN-file can be edited, i.e. a keyword inserted,
> that will allow me to open this file?
What this means is that none of the file was recognizable as a HIN
file.
The most common reason for seeing this is that the file was inadvertently
opened with a word processor, that changed it from a text file to its
own format. Try opening the file in NotePad (if it's small enough) or
the MS-DOS editor (or emaccs or vi or ...) but *not* WordPerfect, Word,
Ami, etc. If there are nonsense characters interspersed with recognizable
text then this is probably what happened. If so, try opening it in
the word processor that corrupted it and saving it again (to a different
name!) in text or ASCII format. If you're lucky it will be restored.
If this isn't the problem, read Appendix D of the Reference manual and
compare the HIN spec with the actual contents of your file.
Hope this helps,
Graham
------------
Graham Hurst
Hypercube Inc, 7-419 Phillip St, Waterloo, Ont, Canada N2L 3X2 (519)725-4040
internet: hurst@hyper.com
________________________________________________________________________
From hyper!hurst@autodesk.com Fri Nov 5 00:46:21 1993
Date: Thu, 4 Nov 93 19:34:09 -0500
From: hyper!hurst@autodesk.com (Graham Hurst)
To: Jesse Salb , autodesk!hyperchem@openlink.openlink.com
Subject: Re: PDB file residue numbering
Jesse Salb wrote:
> Certain PDB files (.ENT) have undetermined residues marked "UNK" for
> unknown. When a file containing UNKs is loaded into Hyperchem, the
> numbering of all the known residues is disrupted. Other programs such as
> Kinemage seem to handle UNKs well while preserving the residue numbering
> from beginning to end of the protein. Does anyone know of a workaround
> to this problem in Hyperchem?
> jsalb@novalink.com
We've already told Jesse the following, but I'm posting here for the
benefit of any others interested.
It turns out the the PDB file did not specify CONECT records for at least
some of the non-standard residue's backbone. When HyperChem encounters
a residue in a PDB that it does not have a template for, it relies on
CONECT records to determine where bonds are since the PDB spec says that
residues not in their standard list have to have CONECT records. If a
has no CONECT records, i.e. no bonds, then HyperChem makes it a seperate
molecule and restarts the residue numbering.
There are two solutions to this problem. Either create a template entry
to tell HyperChem where the bonds are (see the end of Appendix E of the
Reference Manual for step-by-step instructions) or edit the PDB to add
the missing CONECT records.
Cheers,
Graham
------------
Graham Hurst
Hypercube Inc, 7-419 Phillip St, Waterloo, Ont, Canada N2L 3X2 (519)725-4040
internet: hurst@hyper.com
________________________________________________________________________
From jianfent@chaph.usc.edu Fri Nov 5 14:28:45 1993
Date: Fri, 5 Nov 93 10:37:02 PST
From: Jianfen Tsai
To: hyperchem@autodesk.com
Cc: jianfent@scf.usc.edu
Subject: heat of formation
when we calculate heat of formation using Hyperchem am1 method, as you
pointed out that the value are experimentally fited for each molecular
geometry. as we optimize a specific strcture say CH3-CH3, by different force
field for instance MM+ or AM1, the resulting value of heat of formation is
quite different. Why?, How the AM1 method calculates the heat of formation?
________________________________________________________________________
From berger@wuchem.wustl.edu Mon Nov 8 17:18:05 1993
Date: Mon, 8 Nov 1993 14:55:25 -0600
To: "hyperchem@autodesk.com"@WUGATE.wustl.edu
Subject: MO representations in HyperChem Release 3 for DOS
Does anyone know of a simple program or macro which allows one to make 3D MO
pictures in HyperChem Release 3? It would be even better if they were
rotatable in real time... Thanks!
Dan Berger
________________________________________________________________________
From jianfent@chaph.usc.edu Mon Nov 8 19:57:36 1993
Date: Mon, 8 Nov 93 13:33:54 PST
From: Jianfen Tsai
To: hyperchem@autodesk.com
Subject: heat of formation
5-Nov-93 18:37:11-GMT,831;000000000001
Return-Path:
Received: from sal-sun43.usc.edu by chaph.usc.edu (4.1/SMI-4.1+ucs-3.0)
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Date: Fri, 5 Nov 93 10:37:02 PST
From: Jianfen Tsai
To: hyperchem@autodesk.com.
Cc: jianfent@scf.usc.edu
Subject: heat of formation
Message-Id:
when we calculate heat of formation using Hyperchem am1 method, as you
pointed out that the value are experimentally fited for each molecular
geometry. as we optimize a specific strcture say CH3-CH3, by different force
field for instance MM+ or AM1, the resulting value of heat of formation is
quite different. Why?, How the AM1 method calculates the heat of formation?
________________________________________________________________________
From hyper!slee@autodesk.com Tue Nov 9 11:51:01 1993
From: hyper!slee@autodesk.com (Thomas Slee)
Subject: Re: heat of formation
To: autodesk!hyperchem@openlink.openlink.com (HyperChem e-mail group)
Date: Tue, 9 Nov 93 9:10:27 EST
Jianfen Tsai writes...
|
| when we calculate heat of formation using Hyperchem am1 method, as you
| pointed out that the value are experimentally fited for each molecular
| geometry. as we optimize a specific strcture say CH3-CH3, by different force
| field for instance MM+ or AM1, the resulting value of heat of formation is
| quite different. Why?, How the AM1 method calculates the heat of formation?
|
If the total electronic binding energy of the molecule is E, then the
the AM1 heat of formation is
Heat of formation = E - Sum(H_atom)
where H_atom is a correction for each atom, and is given in column 13
of the AM1_1.abp parameter file (see the Theory and Methods section of
the documentation, p 178 for this).
The total electronic binding energy depends on the geometry, so the
heat of formation is dependent on this too. The method was parametrized
to reproduce heats of formation at geometries optimized using the
method itself, I believe, so for most molecules the AM1 geometry
would be the appropriate one to use.
Tom
--
Tom Slee
Hypercube, Inc., #7-419 Phillip St., Waterloo, Ont. N2L 3X2
Internet: slee@hyper.com Tel. (519) 725-4040
________________________________________________________________________
From jianfent@chaph.usc.edu Tue Nov 9 14:31:48 1993
Date: Tue, 9 Nov 93 8:45:50 PST
From: Jianfen Tsai
To: hyperchem@autodesk.com
Cc: jianfent@scf.usc.edu
Subject: heat capacity
can we calculate heat capacity, Cp, for both organic molecules and radical
species like CH3-CH3 or CH3-CH2., by AM1 method in HyperChem, as we do for
heat of formation?
________________________________________________________________________
From hyper!slee@autodesk.com Thu Nov 11 10:26:43 1993
From: hyper!slee@autodesk.com (Thomas Slee)
Subject: Re: heat capacity
To: autodesk!hyperchem@openlink.openlink.com (HyperChem e-mail group)
Date: Thu, 11 Nov 93 10:09:37 EST
Jianfen Tsai writes...
|
| can we calculate heat capacity, Cp, for both organic molecules and radical
| species like CH3-CH3 or CH3-CH2., by AM1 method in HyperChem, as we do for
| heat of formation?
|
You cannot get the heat capacity out as a straightforward number from
HyperChem. HyperChem can provide some information that can help in
this evaluation, however. If you are using statistical mechanics to
calculate the heat capacity as the sum of contributions from vibrations,
rotations, and translations, then the following information may be of
use in calculating the partition functions you need (I am reaching back
a few years here, so check the relevance with your favourite Phys Chem
book).
With your molecule on the screen, choose Display/Inertial axes. The
moments of inertia are displayed on the status line, and these can
be used in the calculation of the rotational partition function.
The vibrational partition function is governed by the frequency of
the normal modes, which can be obtained from a "vibrations" calculation.
For radical species I guess there may be an electronic component, in
which case the electronic energy levels produced by a UV spectrum
calculation (use ZINDO/S at the AM1 geometry) would enable you to
evaluate the electronic partition function.
So, far from a straightforward task, but I hope this helps.
Tom Slee
--
Tom Slee
Hypercube, Inc., #7-419 Phillip St., Waterloo, Ont. N2L 3X2
Internet: slee@hyper.com Tel. (519) 725-4040
________________________________________________________________________
From jianfent@chaph.usc.edu Fri Nov 12 05:48:59 1993
Date: Fri, 12 Nov 93 2:08:41 PST
From: Jianfen Tsai
To: hyperchem@autodesk.com
Cc: jianfent@scf.usc.edu
Subject: error mesage
I was trying to run geometry optimization for structure:
CH2Cl-CH2-CHCl-CH2-CHCl-CH2-CHCl-CH3 using AM1,
the following conditions were put:
setup:
AM1
option:
conv. limit 0.01
iteration limit 50
total charge 0
spin multiplicity 1
spin pair UHF
state lowest
compute:
algorithm polak-ribiere(conjugate gradient)
options RMS gradient of 0.01 or 390 max.
In vacuo
HyperChem version 2.0 is installed on a PC 486 VLB DX2 66MHz made by
Intel Corp., default of MS windows is used.
Error measages always came after the simulation ran for several hours.
and it has to be stoped without being saved. is there anybody having
the same experience?
the error mesage said: Chem caused a general protection fault in
module USER.EXE at 0006:030B
________________________________________________________________________
From roth@organik.uni-erlangen.de Fri Nov 12 09:28:00 1993
From: Henryette Roth
Subject: Printing Orbital Diagrams and Vibrational Spectra
To: hyperchem@autodesk.com
Date: Fri, 12 Nov 93 14:59:10 MET
Hyperchemists,
Concerning the mail from Mel Schriver, maybe this will help a little bit:
... the printing of the energy level diagrams that Alan
and I are generating INSIDE the Orgitals box.
The printing of the Orbital box is only possible with the help of screen capture
programms working under Windows, a good one comes with Coreldraw 3.0, but there
are some on ftp-servers too.
... A secondary problem is that the background
colour is black and the options do not seem to allow one to change the
colour of the backgrounds in the secondary screens (MO energy level
diagrams and the vibrational spectra).
If you change the background in "user preferences" to white and the bonds to
black, you will get the Orbitals box in black and white too. Take care because
some of the colours depend on the Windows settings, when I'm doing screen snap-
shots, I always use the default White Windows screen.
I hope this will help ...
Henryette Roth
********************************************************************************
* Henryette Roth * *
* Inst. f. Org. Chemie I * *
* Universitaet Erlangen * *
* Henkestr. 42 * *
* 91051 Erlangen * *
********************************************************************************
* roth@organik.uni-erlangen.de *
********************************************************************************
________________________________________________________________________
From NEELY@DUCVAX.AUBURN.EDU Mon Nov 22 21:08:14 1993
Date: Mon, 22 Nov 1993 17:02 CST
Subject: energies
To: hyperchem@autodesk.com
The energy values that come up in the information bar as an opti-
mization progresses seem to have very little relation to those
obtained from stand-alone MOPAC: for example, formaldehyde should
converge to -31.xx kcal/mol, but the values seen in Hyperchem are
on the order of -200. (Needless to say, we've selected the AM1
Hamiltonian). What is going on? We're running Hyperchem
on an 80386/80387 machine with 8Mb RAM...
Thanks!
Irene Newhouse
________________________________________________________________________
From hyper!slee@autodesk.com Wed Nov 24 00:42:18 1993
From: hyper!slee@autodesk.com (Thomas Slee)
Subject: Re: energies
To: autodesk!hyperchem@openlink.openlink.com (HyperChem e-mail group)
Date: Tue, 23 Nov 93 9:26:57 EST
Irene Newhouse writes...
|
| The energy values that come up in the information bar as an opti-
| mization progresses seem to have very little relation to those
| obtained from stand-alone MOPAC: for example, formaldehyde should
| converge to -31.xx kcal/mol, but the values seen in Hyperchem are
| on the order of -200. (Needless to say, we've selected the AM1
| Hamiltonian). What is going on? We're running Hyperchem
| on an 80386/80387 machine with 8Mb RAM...
| Thanks!
| Irene Newhouse
|
The "energies" reported by MOPAC are actually heats of formation.
These are obtained from binding energies by subtracting a
fixed increment for each atom in the system.
In HyperChem, the heat of formation is reported along with other
stuff in a log file. I would recommend carrying out a single
point calculation at the end of the optimization rather than
logging for the whole calculation, to avoid huge log files,
and you will see the heat of formation along with other stuff
(e.g., dipole moment) listed there, so that is where your -31.xx
kcal/mol will be found.
The status line energy in HyperChem is somewhat unorthodox for
semi-empirical calculations, but the only difference is in the
origin -- all differences are the same as yoouo are used to. We
decided to print all our status line energies in kcal/mol, which is
pretty standard in molecular mechanics packages. The total
binding energy of a semi-empirical calculation in kcal/mol
is a pretty huge number, so we take away an increment for each
atom: again, this is just a shift of origin.
Hope this is clear.
Tom Slee
--
Tom Slee
Hypercube, Inc., #7-419 Phillip St., Waterloo, Ont. N2L 3X2
Internet: slee@hyper.com Tel. (519) 725-4040