# Gmx\_mdmat\_basics

**URL:** <https://gromacs.bioexcel.eu/t/gmx-mdmat-basics/12741>\
**Category:** User discussions\
**Created:** [October 8, 2025, 6:01am UTC](https://gromacs.bioexcel.eu/t/gmx-mdmat-basics/12741 "2025-10-08T06:01:30Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Nainsybaghel](https://avatars.discourse-cdn.com/v4/letter/n/9fc29f/32.png) [@Nainsybaghel](https://gromacs.bioexcel.eu/u/Nainsybaghel)\
**Post date:** [October 8, 2025, 6:01am UTC](https://gromacs.bioexcel.eu/t/gmx-mdmat-basics/12741/1 "2025-10-08T06:01:30Z")

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gmx\_mdmat is a tool used for calculating the contact map among residues. The output result defines two parameters these are mean contact and total contact. How are these parameters different from each other, and how is it calculated?