Both files hist.xvg and profile.xvg both are simultaneous output of this command. I did not run it twice, once to get profile.xvg and then to get hist.xvg as you uderstood.<br><br><div class="gmail_quote">On Thu, Aug 11, 2011 at 5:42 PM, Justin A. Lemkul <span dir="ltr">&lt;<a href="mailto:jalemkul@vt.edu">jalemkul@vt.edu</a>&gt;</span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;"><div class="im"><br>
<br>
shahid nayeem wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
I used following command<br>
g_wham_4.5.4  -it tpr-files.dat -if pullf-files.dat -o hist -unit kCal<br>
Both profile.xvg and hist.xvg are created with this command using same pullf.xvg and .tpr files.<br>
</blockquote>
<br></div>
An identical command with identical input files producing totally different output?  Sorry, but I find that hard to believe.  Check your work and make sure you&#39;re using the input you think you are.  I suspect something&#39;s amiss and you&#39;re not seeing it.<br>

<br>
-Justin<br>
<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
shahid Nayeem<div class="im"><br>
<br>
On Thu, Aug 11, 2011 at 5:07 PM, Justin A. Lemkul &lt;<a href="mailto:jalemkul@vt.edu" target="_blank">jalemkul@vt.edu</a> &lt;mailto:<a href="mailto:jalemkul@vt.edu" target="_blank">jalemkul@vt.edu</a>&gt;&gt; wrote:<br>

<br>
<br>
<br>
    shahid nayeem wrote:<br>
<br>
        Dear Justin<br>
<br>
        I did some more sampling and sending you profile.xvg, histo.xvg.<br>
        and hist.xvg. I am sending histo.xvg hist.xvg and profile.xvg.<br>
        please tell my the difference in profile.xvg and hist.xvg. Both<br>
        should be same but I get different curves here.<br>
<br>
<br>
    I can&#39;t tell you the difference because you haven&#39;t shown how they<br>
    were generated.  My blind guess is that hist.xvg (a very confusing<br>
    name for a PMF profile) was generated from data that have poor<br>
    sampling in two regions.  The contents of profile.xvg look normal.<br>
     I don&#39;t know which of these curves corresponds to histo.xvg,<br>
    because the histograms therein look fine.<br>
<br>
    Please make sure to give full descriptions of these files.  You&#39;ve<br>
    quote a message that is over a month old.  I&#39;ve replied to hundreds<br>
    of messages since then and I do not remember the full context of our<br>
    discussion.<br>
<br>
    -Justin<br>
<br>
        On Tue, Jul 5, 2011 at 5:16 PM, Justin A. Lemkul<br>
        &lt;<a href="mailto:jalemkul@vt.edu" target="_blank">jalemkul@vt.edu</a> &lt;mailto:<a href="mailto:jalemkul@vt.edu" target="_blank">jalemkul@vt.edu</a>&gt;<br></div><div><div></div><div class="h5">
        &lt;mailto:<a href="mailto:jalemkul@vt.edu" target="_blank">jalemkul@vt.edu</a> &lt;mailto:<a href="mailto:jalemkul@vt.edu" target="_blank">jalemkul@vt.edu</a>&gt;&gt;&gt; wrote:<br>
<br>
<br>
<br>
           shahid nayeem wrote:<br>
<br>
               Dear Justin<br>
               I did pmf calculation for my protein-protein complex<br>
        using your<br>
               tutorial.Off course changing the pull_direction suitable<br>
        for my<br>
               protein but more or less following the same strategy. I<br>
        am using<br>
               gromacs_4.5.4 and g_wham utility. The profile.xvg file<br>
        which I<br>
               get is attached and it shows two dips in PE curve. Please<br>
        see it<br>
               and tell me why I am getting these dips.<br>
<br>
<br>
           You have insufficient sampling in at least these two regions.<br>
         Your<br>
           histograms should confirm this.<br>
<br>
           -Justin<br>
<br>
           --     ==============================<u></u>____==========<br>
<br>
           Justin A. Lemkul<br>
           Ph.D. Candidate<br>
           ICTAS Doctoral Scholar<br>
           MILES-IGERT Trainee<br>
           Department of Biochemistry<br>
           Virginia Tech<br>
           Blacksburg, VA<br></div></div>
           jalemkul[at]<a href="http://vt.edu" target="_blank">vt.edu</a> &lt;<a href="http://vt.edu" target="_blank">http://vt.edu</a>&gt; &lt;<a href="http://vt.edu" target="_blank">http://vt.edu</a>&gt; | (540)<div class="im">
<br>
        231-9080<br>
<br>
           <a href="http://www.bevanlab.biochem." target="_blank">http://www.bevanlab.biochem.</a>__<u></u>__<a href="http://vt.edu/Pages/Personal/justin" target="_blank">vt.edu/Pages/Personal/justin</a><br></div>
        &lt;<a href="http://vt.edu/Pages/Personal/justin" target="_blank">http://vt.edu/Pages/Personal/<u></u>justin</a>&gt;<div class="im"><br>
           &lt;<a href="http://www.bevanlab.biochem." target="_blank">http://www.bevanlab.biochem.</a>_<u></u>_<a href="http://vt.edu/Pages/Personal/justin" target="_blank">vt.edu/Pages/Personal/justin</a><br>
        &lt;<a href="http://www.bevanlab.biochem.vt.edu/Pages/Personal/justin" target="_blank">http://www.bevanlab.biochem.<u></u>vt.edu/Pages/Personal/justin</a>&gt;&gt;<br>
<br>
           ==============================<u></u>____==========<br>
           --     gmx-users mailing list    <a href="mailto:gmx-users@gromacs.org" target="_blank">gmx-users@gromacs.org</a><br>
        &lt;mailto:<a href="mailto:gmx-users@gromacs.org" target="_blank">gmx-users@gromacs.org</a>&gt;<br></div>
           &lt;mailto:<a href="mailto:gmx-users@gromacs.org" target="_blank">gmx-users@gromacs.org</a> &lt;mailto:<a href="mailto:gmx-users@gromacs.org" target="_blank">gmx-users@gromacs.org</a>&gt;<u></u>&gt;<div><div></div>
<div class="h5"><br>
<br>
           <a href="http://lists.gromacs.org/____mailman/listinfo/gmx-users" target="_blank">http://lists.gromacs.org/____<u></u>mailman/listinfo/gmx-users</a><br>
        &lt;<a href="http://lists.gromacs.org/__mailman/listinfo/gmx-users" target="_blank">http://lists.gromacs.org/__<u></u>mailman/listinfo/gmx-users</a>&gt;<br>
           &lt;<a href="http://lists.gromacs.org/__mailman/listinfo/gmx-users" target="_blank">http://lists.gromacs.org/__<u></u>mailman/listinfo/gmx-users</a><br>
        &lt;<a href="http://lists.gromacs.org/mailman/listinfo/gmx-users" target="_blank">http://lists.gromacs.org/<u></u>mailman/listinfo/gmx-users</a>&gt;&gt;<br>
           Please search the archive at<br>
           <a href="http://www.gromacs.org/____Support/Mailing_Lists/Search" target="_blank">http://www.gromacs.org/____<u></u>Support/Mailing_Lists/Search</a><br>
        &lt;<a href="http://www.gromacs.org/__Support/Mailing_Lists/Search" target="_blank">http://www.gromacs.org/__<u></u>Support/Mailing_Lists/Search</a>&gt;<br>
           &lt;<a href="http://www.gromacs.org/__Support/Mailing_Lists/Search" target="_blank">http://www.gromacs.org/__<u></u>Support/Mailing_Lists/Search</a><br>
        &lt;<a href="http://www.gromacs.org/Support/Mailing_Lists/Search" target="_blank">http://www.gromacs.org/<u></u>Support/Mailing_Lists/Search</a>&gt;&gt; before<br>
        posting!<br>
           Please don&#39;t post (un)subscribe requests to the list. Use the www<br>
           interface or send it to <a href="mailto:gmx-users-request@gromacs.org" target="_blank">gmx-users-request@gromacs.org</a><br>
        &lt;mailto:<a href="mailto:gmx-users-request@gromacs.org" target="_blank">gmx-users-request@<u></u>gromacs.org</a>&gt;<br>
           &lt;mailto:<a href="mailto:gmx-users-request@" target="_blank">gmx-users-request@</a>__<a href="http://gromacs.org" target="_blank">gr<u></u>omacs.org</a><br>
        &lt;mailto:<a href="mailto:gmx-users-request@gromacs.org" target="_blank">gmx-users-request@<u></u>gromacs.org</a>&gt;&gt;.<br>
<br>
           Can&#39;t post? Read<br>
        <a href="http://www.gromacs.org/____Support/Mailing_Lists" target="_blank">http://www.gromacs.org/____<u></u>Support/Mailing_Lists</a><br>
        &lt;<a href="http://www.gromacs.org/__Support/Mailing_Lists" target="_blank">http://www.gromacs.org/__<u></u>Support/Mailing_Lists</a>&gt;<br>
           &lt;<a href="http://www.gromacs.org/__Support/Mailing_Lists" target="_blank">http://www.gromacs.org/__<u></u>Support/Mailing_Lists</a><br>
        &lt;<a href="http://www.gromacs.org/Support/Mailing_Lists" target="_blank">http://www.gromacs.org/<u></u>Support/Mailing_Lists</a>&gt;&gt;<br>
<br>
<br>
<br>
    --     ==============================<u></u>__==========<br>
<br>
    Justin A. Lemkul<br>
    Ph.D. Candidate<br>
    ICTAS Doctoral Scholar<br>
    MILES-IGERT Trainee<br>
    Department of Biochemistry<br>
    Virginia Tech<br>
    Blacksburg, VA<br>
    jalemkul[at]<a href="http://vt.edu" target="_blank">vt.edu</a> &lt;<a href="http://vt.edu" target="_blank">http://vt.edu</a>&gt; | (540) 231-9080<br>
    <a href="http://www.bevanlab.biochem." target="_blank">http://www.bevanlab.biochem.</a>__<a href="http://vt.edu/Pages/Personal/justin" target="_blank"><u></u>vt.edu/Pages/Personal/justin</a><br>
    &lt;<a href="http://www.bevanlab.biochem.vt.edu/Pages/Personal/justin" target="_blank">http://www.bevanlab.biochem.<u></u>vt.edu/Pages/Personal/justin</a>&gt;<br>
<br>
    ==============================<u></u>__==========<br>
    --     gmx-users mailing list    <a href="mailto:gmx-users@gromacs.org" target="_blank">gmx-users@gromacs.org</a><br>
    &lt;mailto:<a href="mailto:gmx-users@gromacs.org" target="_blank">gmx-users@gromacs.org</a>&gt;<br>
    <a href="http://lists.gromacs.org/__mailman/listinfo/gmx-users" target="_blank">http://lists.gromacs.org/__<u></u>mailman/listinfo/gmx-users</a><br>
    &lt;<a href="http://lists.gromacs.org/mailman/listinfo/gmx-users" target="_blank">http://lists.gromacs.org/<u></u>mailman/listinfo/gmx-users</a>&gt;<br>
    Please search the archive at<br>
    <a href="http://www.gromacs.org/__Support/Mailing_Lists/Search" target="_blank">http://www.gromacs.org/__<u></u>Support/Mailing_Lists/Search</a><br>
    &lt;<a href="http://www.gromacs.org/Support/Mailing_Lists/Search" target="_blank">http://www.gromacs.org/<u></u>Support/Mailing_Lists/Search</a>&gt; before posting!<br>
    Please don&#39;t post (un)subscribe requests to the list. Use the www<br>
    interface or send it to <a href="mailto:gmx-users-request@gromacs.org" target="_blank">gmx-users-request@gromacs.org</a><br>
    &lt;mailto:<a href="mailto:gmx-users-request@gromacs.org" target="_blank">gmx-users-request@<u></u>gromacs.org</a>&gt;.<br>
    Can&#39;t post? Read <a href="http://www.gromacs.org/__Support/Mailing_Lists" target="_blank">http://www.gromacs.org/__<u></u>Support/Mailing_Lists</a><br>
    &lt;<a href="http://www.gromacs.org/Support/Mailing_Lists" target="_blank">http://www.gromacs.org/<u></u>Support/Mailing_Lists</a>&gt;<br>
<br>
<br>
</div></div></blockquote><div><div></div><div class="h5">
<br>
-- <br>
==============================<u></u>==========<br>
<br>
Justin A. Lemkul<br>
Ph.D. Candidate<br>
ICTAS Doctoral Scholar<br>
MILES-IGERT Trainee<br>
Department of Biochemistry<br>
Virginia Tech<br>
Blacksburg, VA<br>
jalemkul[at]<a href="http://vt.edu" target="_blank">vt.edu</a> | (540) 231-9080<br>
<a href="http://www.bevanlab.biochem.vt.edu/Pages/Personal/justin" target="_blank">http://www.bevanlab.biochem.<u></u>vt.edu/Pages/Personal/justin</a><br>
<br>
==============================<u></u>==========<br>
-- <br>
gmx-users mailing list    <a href="mailto:gmx-users@gromacs.org" target="_blank">gmx-users@gromacs.org</a><br>
<a href="http://lists.gromacs.org/mailman/listinfo/gmx-users" target="_blank">http://lists.gromacs.org/<u></u>mailman/listinfo/gmx-users</a><br>
Please search the archive at <a href="http://www.gromacs.org/Support/Mailing_Lists/Search" target="_blank">http://www.gromacs.org/<u></u>Support/Mailing_Lists/Search</a> before posting!<br>
Please don&#39;t post (un)subscribe requests to the list. Use the www interface or send it to <a href="mailto:gmx-users-request@gromacs.org" target="_blank">gmx-users-request@gromacs.org</a>.<br>
Can&#39;t post? Read <a href="http://www.gromacs.org/Support/Mailing_Lists" target="_blank">http://www.gromacs.org/<u></u>Support/Mailing_Lists</a><br>
</div></div></blockquote></div><br>