# Mapping genome positions between different WS releases

**URL:** <https://community.alliancegenome.org/t/mapping-genome-positions-between-different-ws-releases/4679>\
**Category:** WormBase\
**Created:** [July 31, 2013, 12:23pm UTC](https://community.alliancegenome.org/t/mapping-genome-positions-between-different-ws-releases/4679 "2013-07-31T12:23:27Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![wolfgang](https://community.alliancegenome.org/letter_avatar_proxy/v4/letter/w/54ee81/32.png) [@wolfgang](https://community.alliancegenome.org/u/wolfgang)\
**Post date:** [July 31, 2013, 12:23pm UTC](https://community.alliancegenome.org/t/mapping-genome-positions-between-different-ws-releases/4679/1 "2013-07-31T12:23:27Z")

</div>

Dear all,  
is there any standard way or recommended approach (I wouldn’t mind if it requires a bit of scripting) to convert genome positions between different WS releases?  
I’m mostly interested in a conversion between WS220 and 235, but a general solution would be great of course.  
Thanks for any feedback,  
Wolfgang

---

<div class="post-metadata">

**Author:** ![mh6](https://community.alliancegenome.org/letter_avatar_proxy/v4/letter/m/e495f1/32.png) [@mh6](https://community.alliancegenome.org/u/mh6)\
**Post date:** [August 2, 2013, 3:43pm UTC](https://community.alliancegenome.org/t/mapping-genome-positions-between-different-ws-releases/4679/2 "2013-08-02T15:43:51Z")

</div>

I think there was a page on the old WormBase wiki : [http://wiki.wormbase.org/index.php/Converting\_Coordinates\_between\_releases](http://wiki.wormbase.org/index.php/Converting_Coordinates_between_releases)  
Mostly GFF based, but it should work.

---

<div class="post-metadata">

**Author:** ![wolfgang](https://community.alliancegenome.org/letter_avatar_proxy/v4/letter/w/54ee81/32.png) [@wolfgang](https://community.alliancegenome.org/u/wolfgang)\
**Post date:** [August 2, 2013, 4:04pm UTC](https://community.alliancegenome.org/t/mapping-genome-positions-between-different-ws-releases/4679/3 "2013-08-02T16:04:05Z")

</div>

Thanks a real lot for the link!  
Converting my data to gff should be straightforward, so it looks like this does exactly what I want.  
Have a nice weekend,  
Wolfgang