# Hydrogen bond population as a function of position

**URL:** <https://gromacs.bioexcel.eu/t/hydrogen-bond-population-as-a-function-of-position/250>\
**Category:** User discussions\
**Created:** [June 5, 2020, 4:17pm UTC](https://gromacs.bioexcel.eu/t/hydrogen-bond-population-as-a-function-of-position/250 "2020-06-05T16:17:57Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![imanahmadabadi](https://avatars.discourse-cdn.com/v4/letter/i/8e7dd6/32.png) [@imanahmadabadi](https://gromacs.bioexcel.eu/u/imanahmadabadi)\
**Post date:** [June 5, 2020, 4:17pm UTC](https://gromacs.bioexcel.eu/t/hydrogen-bond-population-as-a-function-of-position/250/1 "2020-06-05T16:17:57Z")

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Dear Gromacs users,

Is there any tool in order to acquire the number of hydrogen bonds in a system as a function of position averaged over trajectory? For example, the number of Hbonds along x-direction in the simulation box?

Best regards,

Iman

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**Author:** ![mijiddorj](https://avatars.discourse-cdn.com/v4/letter/m/779978/32.png) [@mijiddorj](https://gromacs.bioexcel.eu/u/mijiddorj)\
**Post date:** [June 5, 2020, 4:32pm UTC](https://gromacs.bioexcel.eu/t/hydrogen-bond-population-as-a-function-of-position/250/2 "2020-06-05T16:32:17Z")

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In my knowledge. no. You can work on combinations of traj and distance (I hope that it should be possible to find pairs within specific range for example 3.5 Ang etc) analysis along the x-axis.

Mijiddorj

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**Author:** ![imanahmadabadi](https://avatars.discourse-cdn.com/v4/letter/i/8e7dd6/32.png) [@imanahmadabadi](https://gromacs.bioexcel.eu/u/imanahmadabadi)\
**Post date:** [June 5, 2020, 4:38pm UTC](https://gromacs.bioexcel.eu/t/hydrogen-bond-population-as-a-function-of-position/250/3 "2020-06-05T16:38:37Z")

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Thanks, Mijiddorj, Is there any other tool other than Gromacs analysis to do that?

Best regards,  
Iman

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**Author:** ![mijiddorj](https://avatars.discourse-cdn.com/v4/letter/m/779978/32.png) [@mijiddorj](https://gromacs.bioexcel.eu/u/mijiddorj)\
**Post date:** [June 5, 2020, 4:49pm UTC](https://gromacs.bioexcel.eu/t/hydrogen-bond-population-as-a-function-of-position/250/4 "2020-06-05T16:49:53Z")

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I do not know. please use google search. I do not exactly know what do you want to tell this kind of analysis.

Mijiddorj