On 2010-03-09 20.01, Joe Joe wrote:
I also just tried on a different ALA and got the same problem.

can you please submit a bugzilla and upload files to reproduce the problem?


Ilya


On Tue, Mar 9, 2010 at 10:58 AM, Joe Joe <[email protected]
<mailto:[email protected]>> wrote:

    I am looking the the gmxdump output and everything seems consistent.
    The only difference is that the numbering in the index file starts
    at 1 whereas in the gmxdump the arrays are indexed starting at 0.
    The coordinates look just fine.

    Thanks,

    Ilya



    On Tue, Mar 9, 2010 at 10:30 AM, Joe Joe <[email protected]
    <mailto:[email protected]>> wrote:

        I  trjconv/ed xtc to pdb and loaded into vmd. The coordinates
        looked fine.

        I also

        tpbconv/ed topol.tpr to topol_subset.tpr.

        then I

        editconf/ed topol_subset.tpr to gro and looked at the
        coordinates. Index file matched and structure looked whole in vmd.

        I will try the gmxdump

        Thanks,

        Ilya




        On Tue, Mar 9, 2010 at 10:22 AM, David van der Spoel
        <[email protected] <mailto:[email protected]>> wrote:

            On 2010-03-09 19.16, Joe Joe wrote:

                yep.

            Have you gmxdump/ed the xtc to check the coordinates are right?


                On Tue, Mar 9, 2010 at 10:15 AM, David van der Spoel
                <[email protected] <mailto:[email protected]>
                <mailto:[email protected]
                <mailto:[email protected]>>> wrote:

                    On 2010-03-09 19.09, Joe Joe wrote:

                        Hi I am trying to post process and xtc
                trajectory using g_dist. I am
                        trying to calculate the CA-CB distance of an
                Alanine residue but
                        I get
                        NAN in all the distance columns. It works for
                the other residues
                        I've
                        tried (i.e. SER, VAL). I am using vsites in my
                simulation and I
                        think it
                        may have some thing to do with the way gromacs
                outputs the CB
                        positions
                        in the xtc file when the CB is part of the vsite
                network. Any
                        thoughs?

                        Thanks,

                        Ilya

                    Are you sure your index file matches the xtc/tpr?

                    --
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                    Dept. of Cell & Molec. Biol., Uppsala University.
                    Box 596, 75124 Uppsala, Sweden. Phone:  +46184714205.
                [email protected] <mailto:[email protected]>
                <mailto:[email protected] <mailto:[email protected]>>

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            Dept. of Cell & Molec. Biol., Uppsala University.
            Box 596, 75124 Uppsala, Sweden. Phone:  +46184714205.
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Dept. of Cell & Molec. Biol., Uppsala University.
Box 596, 75124 Uppsala, Sweden. Phone:  +46184714205.
[email protected]    http://folding.bmc.uu.se
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