2016-08-29 14:37 GMT-06:00 Chang Woon Jang <changwoonj...@gmail.com>:
> Dear Christoph,
>
>
> What I have used is the following command with the options.xml file.
>
>
> <cg>
>   <bonded>
>     <!-- name of the interaction -->
>     <name>dihedral</name>
>     <min>0.285</min>
>     <max>0.615</max>
>     <step>0.001</step>
>   </bonded>
>   <inverse>
>     <gromacs>
>       <pot_max>1e8</pot_max>
>       <table_end>3.14</table_end>
>       <table_bins>0.001</table_bins>
>     </gromacs>
>   </inverse>
> </cg>
>
>
> csg_call --options options.xml --ia-type bond --ia-name dihedral
> convert_potential gromacs table_d1.xvg full_table_d1.xvg
That command is wrong as you don't convert a bond.
For bonds, the minimum for the xvg table will always be set to 0.

>
>
>
>
> This gives only from 0 to 3.14. When I used the following command, it gives
> error.
>
> csg_call --options options.xml --ia-type dihedral --ia-name dihedral
> convert_potential gromacs table_d1.xvg full_table_d1.xvg
convert_potential takes a VOTCA table (in rad) not a xvg table.
VOTCA table have 3 columns, angle(rad), potential(in simulation
units), flag (i/o/u)
The lines which have valid point should have an "i", but in case of
doubt you can just leave the 3rd column empty.

Christoph
>
>
> Callstack:
> /home/chang/PACKAGE/votca/bin/csg_call - linenumber 199
>     do_external - linenumber 176 in
> /home/chang/PACKAGE/votca/share/votca/scripts/inverse/functions_common.sh
>
> /home/chang/PACKAGE/votca/share/votca/scripts/inverse/potential_to_gromacs.sh
> - linenumber 123
>             do_external - linenumber 22 (see 'csg_call --cat function
> do_external')
>                 die - linenumber 2 (see 'csg_call --cat function die')
> #################################################################################################################
> #
> #
> # ERROR:
> #
> # do_external: subscript
> #
> # /home/chang/PACKAGE/votca/share/votca/scripts/inverse/table_linearop.pl
> --on-x table_d1.xvg table_d1.pot.scale.Jdqcv 57.2957795 0 #
> # (from tags table linearop) failed
> #
> # Details can be found above
> #
> #
> #
> ##################################################################################################################
>
>
> On Mon, Aug 29, 2016 at 4:27 PM, Christoph Junghans <jungh...@votca.org>
> wrote:
>>
>> 2016-08-29 14:08 GMT-06:00 Chang Woon Jang <changwoonj...@gmail.com>:
>> > Dear Votca Users,
>> >
>> >
>> >     Dihedral potential obtained from is range -3.14 to 3.14. I would
>> > like to
>> > convert it to gromacs format using csg_call. How do I make options.xml
>> > file?
>> What is the csg_call command you are running?
>> Do you use the "--ia-type dihedral" option to specify you are
>> converting a dihedral?
>>
>> Christoph
>> > When I use the following xml file, it only produce from 0 to 3.14 not
>> > -3.14.
>> >
>> > <cg>
>> >   <bonded>
>> >     <!-- name of the interaction -->
>> >     <name>bond</name>
>> >     <min>0.285</min>
>> >     <max>0.615</max>
>> >     <step>0.001</step>
>> >   </bonded>
>> >   <inverse>
>> >     <gromacs>
>> >       <pot_max>1e8</pot_max>
>> >       <table_end>3.14</table_end>
>> >       <table_bins>0.001</table_bins>
>> >     </gromacs>
>> >   </inverse>
>> > </cg>
>> >
>> > Thank you.
>> >
>> >
>> > Best regards,
>> > Changwoon Jang,
>> >
>> > --
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>>
>>
>>
>> --
>> Christoph Junghans
>> Web: http://www.compphys.de
>>
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>
>
>
>
> --
> Best regards,
> Changwoon Jang,
>
> Postdoctoral Research Fellow
> Department of Chemical & Biological Engineering, Drexel University
> 3141 Chestnut Street, Philadelphia, PA 19104
>
> Voice: (662) 617-2267
> E-mail: cj...@drexel.edu
>
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-- 
Christoph Junghans
Web: http://www.compphys.de

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