---
name: "mk_angndx_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-mk_angndx"
---

# mk\_angndx\_d(1)

Generate index files for 'gmx angle'

Part of [gmx-mk\_angndx(1)](/gmx-mk_angndx/1.md).

## NAME

gmx-mk\_angndx - Generate index files for 'gmx angle'

## SYNOPSIS

gmx mk\_angndx \[-s \[\<.tpr/.tpb/...\>\]\] \[-n \[\<.ndx\>\]\] \[-nice \<int\>\]\
              \[-type \<enum\>\] \[-\[no\]hyd\] \[-hq \<real\>\]

## DESCRIPTION

**gmx mk\_angndx** makes an index file for calculation of angle distributions etc. It uses a run input file (**.tpx**) for the definitions of the angles, dihedrals etc.

## OPTIONS

Options to specify input and output files:

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

**-n** *\[\<.ndx\>\] (angle.ndx) (Output)*\
     Index file

Other options:

**-nice** *\<int\> (0)*\
     Set the nicelevel

**-type** *\<enum\> (angle)*\
     Type of angle: angle, dihedral, improper, ryckaert-bellemans

**-\[no\]hyd**  *(yes)*\
     Include angles with atoms with mass  1.5

**-hq** *\<real\> (-1)*\
     Ignore angles with atoms with mass  1.5 and magnitude of their charge less than this value

## SEE ALSO

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

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