# Adding a scale bar to a circle plot/ how do I know the scale of my tree

**URL:** <https://forum.biobakery.org/t/adding-a-scale-bar-to-a-circle-plot-how-do-i-know-the-scale-of-my-tree/2003>\
**Category:** GraPhlAn\
**Created:** [April 25, 2021, 1:36pm UTC](https://forum.biobakery.org/t/adding-a-scale-bar-to-a-circle-plot-how-do-i-know-the-scale-of-my-tree/2003 "2021-04-25T13:36:28Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![brijon](https://avatars.discourse-cdn.com/v4/letter/b/74df32/32.png) [@brijon](https://forum.biobakery.org/u/brijon)\
**Post date:** [April 25, 2021, 1:36pm UTC](https://forum.biobakery.org/t/adding-a-scale-bar-to-a-circle-plot-how-do-i-know-the-scale-of-my-tree/2003/1 "2021-04-25T13:36:28Z")

</div>

Hi,  
Ive been asked to add a scale bar to a circle plot I made in graphlan,  
to my knowledge its not possible to add a scale bar or labelled branch lengths to a circleplot within graphlan?  
If so is there a way I can work out the scale of my tree,  
I checked and I used the default option ignore\_branch\_len 0 so the branch lengths have been taken into account in the plot.

Any help much appreciated!  
Thank you,  
Briony

---

<div class="post-metadata">

**Author:** ![Kelsey\_Thompson](https://yyz1.discourse-cdn.com/flex027/user_avatar/forum.biobakery.org/kelsey_thompson/32/65_2.png) [@Kelsey\_Thompson](https://forum.biobakery.org/u/Kelsey_Thompson)\
**Post date:** [June 3, 2021, 6:06pm UTC](https://forum.biobakery.org/t/adding-a-scale-bar-to-a-circle-plot-how-do-i-know-the-scale-of-my-tree/2003/2 "2021-06-03T18:06:57Z")

</div>

Hi @brijon,

Apologies for the delay in this response. This is not a function within GraPhlAn that we currently support, but I passed it along to the developers as a request for a future version!

On that note: I have seen this type of thing done using ggtee in the past : see this [tutorial](https://yulab-smu.top/treedata-book/chapter5.html).

I hope this helps and again apologies on the delay!  
Best,  
Kelsey