Alan Hewat wrote:
>Actually the ICDD database contains many more patterns, and contrary to
>what was written, does contain calculated patterns from most of the ICSD
>database as well (50479 entries) *including* single crystal entries.
PowBase is playing the same game as PDF-3 (not P
crystallographic databases is appropriate in this age of new
information technology.
Armel Le Bail <[EMAIL PROTECTED]> wrote:
>Cette année pourrait voir la commercialisation de PDF-3
>par l'ICDD, une base de données contenant 3000 diagrammes
>
>Une alternative, PowBase,
vide a complete database is evident
with the recent add of calculated patterns from ICSD and in a
near future from CSD.
The size of PowBase for 80 patterns is 800Ko, thanks to compression
by Winzip. A base of 3000 patterns would be 30Mo, and this is
not a problem, even on a simple PC with full Inter
Dear All,
I think that standardisation is an important topic at the moment- the dawn of
a database of diffraction patterns. If you take a look through the different
formats that GSAS and FULLPROF can accept (I name those only for convenience)
it is a bit of a jungle- I include of course both 2-ax
At 22:14 07/11/99 -0200, Helio Salim de Amorim wrote:
>I think that PowBase is yet a remarkable step and your public domain
>character a very important aspect. I think also, that is not necessary a
>hard standardization but a few directions like,
>- the data must be a
Lachlan wrote :
>When/if powder programs are CIF friendly, the viewer used
>could be up to the user - i.e., viewing in Q space in
>programs such as Winplotr.
The current format used in PowBase is diplayed also by
Winplotr (INSTRM=0).
>Initially, it would be nice if authors o
While the database system Armel has done looks good,,
this still leaves the problem of a common file
format. If CIF was used, many of the problems/requests
described by Andrew would become non-issues.
CIF Homepage at:
http://www.se.iucr.org/iucr-top/cif/
Powder CIF Dictionary
http://www.
CTED]
-Original Message-
From: Andrew Wills [SMTP:[EMAIL PROTECTED]]
Sent: Friday, November 05, 1999 3:47 PM
To: RIETVELD_L Distribution List
Subject:Re: [PowBase]
Armel,
Not bad for a few hours work! I hope that everyone g
Armel,
Not bad for a few hours work! I hope that everyone gives some feedback because
this is a great opportunity to decide what we as users want in a database.
Perhaps we should also return to one of the old chestnuts (quaint English
expression that means 'classic argument') from the powder di
Let us discuss on something concrete.
I do not believe that a database of powder patterns
needs necessarily to use all the definitions which are
in the Powder CIF dictionary for being a useful database.
So that, in 2 hours, I have built PowBase, containing
now 2 powder patterns (and probably
10 matches
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