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@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 &quot;attributes&quot; 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@buffalo.edu <mailto:patridge@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>
    Email:_patridgc@dyc.edu <mailto:patridgc@dyc.edu>_




    On Nov 13, 2013, at 12:19 PM, Julius Campecino <jcampecino@gmail.com <mailto:jcampecino@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@gmail.com <mailto:jcampecino@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@buffalo.edu <mailto:patridge@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>
            Email:_patridgc@dyc.edu <mailto:patridgc@dyc.edu>_




            On Nov 10, 2013, at 1:26 PM, Julius Campecino <jcampecino@gmail.com <mailto:jcampecino@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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