Yes, and it's the y-direction that is tricky. If I'm not mistaken, the first row in the matrix is the *bottom* line in the graphical output. Thus, the bottom line in the picture would be the first hbond in the corresponding index file.

Erik

Carla Jamous skrev 2010-10-15 12.12:
No, I don't think so because I did an .eps file (with xpm2ps) that indicates the Time(ps) in x-axis and Hydrogen Bond Index in y-axis.
This is the way I'm reading my matrix.

Carla

On Fri, Oct 15, 2010 at 12:09 PM, Erik Marklund <er...@xray.bmc.uu.se <mailto:er...@xray.bmc.uu.se>> wrote:

     Carla Jamous skrev 2010-10-15 12.05:

        Hi everyone,

        please I need some help on g_hbond.

        I concatenated 3 trajectories. I ran g_hbond on the
        concatenated trajectory. I got the result of h_bonds.
        Then I wanted to run g_hbond on each of my 3 trajectories.
        Here, I get a different result, it means: if I take the first
        10ps of my concatenated trajectory and I run g_hbond on these
        10ps. I get some H-bonds eg. Gly(N)...H(gly)...O
                                              but this same H-bond
        doesn't appear in the first 10ps of my concatenated
        trajectory's HBmap.

        Please does anyone have an idea where I might have done a mistake?

        Thank you,
        Carla

    The first thing to check is if you're reading the matrix upside
    down. Sounds trivial, but it's an eaasy mistake to do.

    Cheers,

-- -----------------------------------------------
    Erik Marklund, PhD student
    Dept. of Cell and Molecular Biology, Uppsala University.
    Husargatan 3, Box 596,    75124 Uppsala, Sweden
    phone:    +46 18 471 4537        fax: +46 18 511 755
    er...@xray.bmc.uu.se <mailto:er...@xray.bmc.uu.se>
    http://folding.bmc.uu.se/

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--
-----------------------------------------------
Erik Marklund, PhD student
Dept. of Cell and Molecular Biology, Uppsala University.
Husargatan 3, Box 596,    75124 Uppsala, Sweden
phone:    +46 18 471 4537        fax: +46 18 511 755
er...@xray.bmc.uu.se    http://folding.bmc.uu.se/

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