---
name: "g_rama_d"
section: "1"
platform: "linux"
package: "gromacs-data"
version: "5.0.2-1"
release: "Debian 8 (Jessie)"
platforms: ["linux"]
url: "https://new.carta.tech/gmx-rama"
---

# g\_rama\_d(1)

Compute Ramachandran plots

Part of [gmx-rama(1)](/gmx-rama/1.md).

## NAME

gmx-rama - Compute Ramachandran plots

## SYNOPSIS

gmx rama \[-f \[\<.xtc/.trr/...\>\]\] \[-s \[\<.tpr/.tpb/...\>\]\] \[-o \[\<.xvg\>\]\]\
          \[-nice \<int\>\] \[-b \<time\>\] \[-e \<time\>\] \[-dt \<time\>\] \[-\[no\]w\]\
          \[-xvg \<enum\>\]

## DESCRIPTION

**gmx rama** selects the phi/psi dihedral combinations from your topology file and computes these as a function of time. Using simple Unix tools such as *grep* you can select out specific residues.

## OPTIONS

Options to specify input and output files:

**-f** *\[\<.xtc/.trr/...\>\] (traj.xtc) (Input)*\
     Trajectory: xtc trr cpt trj gro g96 pdb tng

**-s** *\[\<.tpr/.tpb/...\>\] (topol.tpr) (Input)*\
     Run input file: tpr tpb tpa

**-o** *\[\<.xvg\>\] (rama.xvg) (Output)*\
     xvgr/xmgr file

Other options:

**-nice** *\<int\> (19)*\
     Set the nicelevel

**-b** *\<time\> (0)*\
     First frame (ps) to read from trajectory

**-e** *\<time\> (0)*\
     Last frame (ps) to read from trajectory

**-dt** *\<time\> (0)*\
     Only use frame when t MOD dt = first time (ps)

**-\[no\]w**  *(no)*\
     View output **.xvg**, **.xpm**, **.eps** and **.pdb** files

**-xvg** *\<enum\> (xmgrace)*\
     xvg plot formatting: xmgrace, xmgr, none

## SEE ALSO

**[gromacs(7)](/gromacs/7.md)**

More information about **GROMACS** is available at \<*http://www.gromacs.org/*\>.