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On 9/03/2012 3:40 AM, a a wrote:
<blockquote cite="mid:COL118-W166D04CEA0D2882E7B57BFA3570@phx.gbl"
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Dear Sir/Madam,
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<div>I learnt that we can use mdcrd from AMBER directly.</div>
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<div>I have used the following commands.</div>
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<div>/share1/gromacs/bin/g_covar -s xxx.pdb -f xxx.mdcrd -o -v</div>
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<div>An error message was obtained.</div>
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<div>Program g_covar, VERSION 4.0.7</div>
<div>Source code file: gmxfio.c, line: 737</div>
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<div>Can not open file:</div>
<div>md0.mdcrd.xtc</div>
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<div>Did I do anything wrong?</div>
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</blockquote>
<br>
Did you read and follow the link I gave you? <a
href="http://www.gromacs.org/Documentation/How-tos/Using_VMD_plugins_to_read_trajectory_formats_not_native_to_GROMACS">http://www.gromacs.org/Documentation/How-tos/Using_VMD_plugins_to_read_trajectory_formats_not_native_to_GROMACS</a>.
The error you cite means GROMACS did not find your VMD plugins. You
should not need to update GROMACS, per someone else's suggestion.<br>
<br>
When asking for help, please copy and paste your full command line.
Details and precision are usually important, though not here.<br>
<br>
Mark<br>
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