<DIV><SPAN>On 08/03/12, <B class=name>a a </B><patd_2@hotmail.com> wrote:</SPAN></DIV><BLOCKQUOTE style="BORDER-LEFT: #00f 1px solid; PADDING-LEFT: 13px; MARGIN-LEFT: 0px" class=iwcQuote cite=mid:COL118-W354F2C44CB8E3A8207B3D6A3570@phx.gbl type="cite">
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<DIV dir=ltr>Dear Gromacs experts,
<DIV><br /></DIV><DIV>I am trying to use the following command: </DIV><DIV><br /></DIV><DIV>g_covar -s file.pdb -f dynamic.trr -o -v</DIV><DIV><br /></DIV><DIV>However, since my trr file is too large, I have to separately prepared it into dynamic1.trr dynamic2.trr, dynamic3.trr.</DIV><DIV><br /></DIV><DIV>Would you mind to instruct how to input several trr files, how to modify the above command line?</DIV></DIV></DIV></TD></TR></TBODY></TABLE></BLOCKQUOTE>
<DIV> </DIV><DIV>This is not possible. Input to all GROMACS tools must be in one file, with rare exceptions for algorithms that do the same thing on several files. Either you need a filesystem capable of dealing with the large file, or follow the advice here <A href="http://www.gromacs.org/Documentation/How-tos/Reducing_Trajectory_Storage_Volume">http://www.gromacs.org/Documentation/How-tos/Reducing_Trajectory_Storage_Volume</A></DIV><DIV> </DIV><DIV>Mark </DIV>