[Ifeffit] error in ATOMS

Robert Gordon ragordon at alumni.sfu.ca
Wed Nov 13 13:36:12 CST 2013


Don't translate to the origin. ATOMS uses crystal symmetry and 
fractional coordinates.
If your atom is not at those coordinates, don't use them.

I used:
title = WT NiSOD
space = P 21 21 21
a =    112.260    b =    113.810    c =    128.60
alpha =     90.0    beta =     90.0    gamma =     90.0
core =    Ni    edge =    K    rmax =      5.0
atoms
! elem   x          y          z     tag           occ.
   Ni    0.02764   0.24340    0.04722  Ni            1.00000
   S     0.03589   0.26093    0.05169  S             1.00000
   S     0.01421   0.25076    0.03688  S             1.00000
   N     0.02186   0.22624    0.04530  N             1.00000
   N     0.03333   0.22521    0.02306  N             1.00000
   N     0.04057   0.23585    0.05453  N             1.00000

Which is just the fractional coordinate variation from your earlier file.
I have run this without issue in 3 versions of ATOMS/Artemis/DArtemis.

On 11/13/2013 1:09 PM, Julius Campecino wrote:
> Yes Matt, that is the metal core. I tried translating the coordinates 
> to the origin and it is still giving me the same problem. I think this 
> has something to do with the attributes/tag after the coordinates. I 
> do not know if some code is not working for the Tag. Have you tried 
> running it on your end? These are the new coordinates.
>
> ! This atoms input file was generated by WebAtoms 1.8 (Atoms 3.0beta10)
> ! Atoms written by and copyright (c) Bruce Ravel, 1998-2001
> title = WT NiSOD
> space = P212121
> a =	112.260	b =	113.810	c =	128.60
> alpha =	 90.0	beta =	 90.0	gamma =	 90.0
> core =	Ni	edge =	K	rmax =	  5.0
> atoms
> ! elem   x          y          z     tag           occ.
>    Ni    0.00000    0.00000    0.00000  Ni            1.00000
>    S     0.92600    1.99600    0.57400  S             1.00000
>    S    -1.50800    0.83800   -1.33000  S             1.00000
>    N    -0.64900   -1.95300   -0.24700  N             1.00000
>    N     0.63900   -2.07000   -3.10800  N             1.00000
>    N     1.45100   -0.85900    0.94000  N             1.00000
>
> Thanks for your help.
>
> Julius
>
>
>
> On Wed, Nov 13, 2013 at 10:09 AM, Matthew Marcus <mamarcus at lbl.gov 
> <mailto:mamarcus at lbl.gov>> wrote:
>
>     Shouldn't ATOMS input coordinates be fractional values?  I wonder
>     if putting the S 3000A from center might have something
>     to do with it.  I'm guessing that this is the metal-sulfer core of
>     a protein, right?
>             mam
>
>
>     On 11/13/2013 9:58 AM, Julius Campecino wrote:
>
>         Hi Chris,
>
>         Same problem:
>
>         Can't call method "attributes" on an undefined value
>         at /usr/local/lib/perl5/site_perl/5.10.0/Xray/ATP.pm line 342.
>
>         Can you try running this input and see if it works for you or
>         not? Maybe there is something at my end that is causing this
>         error.
>
>         ! This atoms input file was generated by WebAtoms 1.8 (Atoms
>         3.0beta10)
>         ! Atoms written by and copyright (c) Bruce Ravel, 1998-2001
>         title = WT NiSOD
>         space = P212121
>         a =     112.260 b =     113.810 c =     128.60
>         alpha =  90.0   beta =   90.0   gamma =  90.0
>         core =  Ni      edge =  K       rmax =    5.0
>         atoms
>         ! elem   x          y          z     tag           occ.
>            Ni    3.10300   27.70100    6.07300  Ni  1.00000
>            S     4.02900   29.69700    6.64700  S 1.00000
>            S     1.59500   28.53900    4.74300  S 1.00000
>            N     2.45400   25.74800    5.82600  N 1.00000
>            N     3.74200   25.63100    2.96500  N 1.00000
>            N     4.55400   26.84200    7.01300  N 1.00000
>
>         Thanks for your help!
>
>         Julius
>
>         On Wed, Nov 13, 2013 at 9:23 AM, Christopher Patridge
>         <patridge at buffalo.edu <mailto:patridge at buffalo.edu>
>         <mailto:patridge at buffalo.edu <mailto:patridge at buffalo.edu>>>
>         wrote:
>
>             Julius,
>
>             I again did not find answer to the error but you could
>         also try the following entity of ATOMS on the web which easily
>         allows a huge number of sites
>
>         http://cars9.uchicago.edu/cgi-bin/atoms/atoms.cgi
>
>             Chris
>
>             ********************************************
>             Dr. Christopher Patridge
>             Assistant Professor of Chemistry
>             Dept of Math and Natural Science
>             D'youville College
>             320 Porter Ave., Buffalo, NY 14201
>             Phone: 716-829-8096 <tel:716-829-8096> <tel:716-829-8096
>         <tel:716-829-8096>>
>         Email:_patridgc at dyc.edu <mailto:Email%3A_patridgc at dyc.edu>
>         <mailto:patridgc at dyc.edu <mailto:patridgc at dyc.edu>>_
>
>
>
>
>             On Nov 13, 2013, at 12:19 PM, Julius Campecino
>         <jcampecino at gmail.com <mailto:jcampecino at gmail.com>
>         <mailto:jcampecino at gmail.com <mailto:jcampecino at gmail.com>>>
>         wrote:
>
>                 Hi everyone,
>
>                 Did anyone figure out how to fix "Can't call method
>             tag" error and adding sites? Really a novice on fitting
>             and I badly need help on this to get going. Sorry to
>             bother everyone.
>
>                 Thanks!
>
>                 Julius
>
>
>                 On Mon, Nov 11, 2013 at 8:48 AM, Julius Campecino
>             <jcampecino at gmail.com <mailto:jcampecino at gmail.com>
>             <mailto:jcampecino at gmail.com
>             <mailto:jcampecino at gmail.com>>> wrote:
>
>                     Hi Chris,
>
>                     Yeah, I did try "add a site" but it is not
>             responding. Does anyone else experience this problem?
>             Thank you, Chris.
>
>                     Julius
>
>
>                     On Mon, Nov 11, 2013 at 9:51 AM, Christopher
>             Patridge <patridge at buffalo.edu
>             <mailto:patridge at buffalo.edu> <mailto:patridge at buffalo.edu
>             <mailto:patridge at buffalo.edu>>> wrote:
>
>                         Julius,
>
>                         While I am not certain what the error means,
>             there is a button displayed right above the atom list
>             which says "ADD A SITE."  I would suggest that having a
>             unit cell as large as you do, along with rather weak
>             scatterers such as N, C, O, and I assume H, it is probably
>             unnecessary to have sites beyond the 3rd shell or so since
>             these contribute negligibly to the EXAFS.
>
>                         Chris
>
>                         ********************************************
>                         Dr. Christopher Patridge
>                         Assistant Professor of Chemistry
>                         Dept of Math and Natural Science
>                         D'youville College
>                         320 Porter Ave., Buffalo, NY 14201
>                         Phone: 716-829-8096 <tel:716-829-8096>
>             <tel:716-829-8096 <tel:716-829-8096>>
>             Email:_patridgc at dyc.edu <mailto:Email%3A_patridgc at dyc.edu>
>             <mailto:patridgc at dyc.edu <mailto:patridgc at dyc.edu>>_
>
>
>
>
>                         On Nov 10, 2013, at 1:26 PM, Julius Campecino
>             <jcampecino at gmail.com <mailto:jcampecino at gmail.com>
>             <mailto:jcampecino at gmail.com
>             <mailto:jcampecino at gmail.com>>> wrote:
>
>                             Hi Bruce,
>
>                             Here's the screen shot of my work in
>                 ATOMS. It's supposed to be more than 7 atoms in the
>                 core column but that's also one thing I do not know
>                 how to add change and add more atoms.
>
>                             When I click "Run Atoms", it gives me this
>                 error "Can't call method "tag" on an undefined value
>                 at C:/strawberry/perl/site/lib/Demeter/Atoms.pm line
>                 668.'' I am using the recent version 0.9.18.2 of the
>                 Demeter installer.
>
>                             Thank you for your help!
>
>                             Julius
>                            
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-- 
Dr. Robert Gordon
Staff Scientist, PNCSRF
APS Sector 20 (PNC/XSD)
9700 S Cass Ave. 435E
Argonne, IL, USA  60439

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