# Annotation "10^n"

**URL:** <https://forum.generic-mapping-tools.org/t/annotation-10-n/2592>\
**Category:** Q&A\
**Created:** [February 3, 2022, 6:14pm UTC](https://forum.generic-mapping-tools.org/t/annotation-10-n/2592 "2022-02-03T18:14:42Z")\
**Posts on this page:** 7\
**Page:** 1

<div class="post-metadata">

**Author:** ![PlanetGus](https://yyz1.discourse-cdn.com/flex047/user_avatar/forum.generic-mapping-tools.org/planetgus/32/303_2.png) [@PlanetGus](https://forum.generic-mapping-tools.org/u/PlanetGus)\
**Post date:** [February 3, 2022, 6:14pm UTC](https://forum.generic-mapping-tools.org/t/annotation-10-n/2592/1 "2022-02-03T18:14:43Z")

</div>

Hi there,  
I can’t seem to use the `p` option properly to write my annotation in the form 10^p instead of 100000… with _ **linear scale** _.

e.g

```auto
gmt begin test png
gmt basemap -R0/1/0/2.5e7 -JX10c -Bafg  
gmt end show

```

gives annotation

- 5000000 = 5 x10(6)
- 10000000 = 10(7)  
…

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<div class="post-metadata">

**Author:** ![pwessel](https://yyz1.discourse-cdn.com/flex047/user_avatar/forum.generic-mapping-tools.org/pwessel/32/30_2.png) [@pwessel](https://forum.generic-mapping-tools.org/u/pwessel)\
**Post date:** [February 3, 2022, 6:28pm UTC](https://forum.generic-mapping-tools.org/t/annotation-10-n/2592/2 "2022-02-03T18:28:58Z")

</div>

I think 10^ is activated for log axes only. I agree that it could be helpful in other situations too, but usually you can work around it via -B’s +s" 10@+6@+" and use -R0/1/0/25.

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<div class="post-metadata">

**Author:** ![PlanetGus](https://yyz1.discourse-cdn.com/flex047/user_avatar/forum.generic-mapping-tools.org/planetgus/32/303_2.png) [@PlanetGus](https://forum.generic-mapping-tools.org/u/PlanetGus)\
**Post date:** [February 3, 2022, 11:29pm UTC](https://forum.generic-mapping-tools.org/t/annotation-10-n/2592/4 "2022-02-03T23:29:14Z")

</div>

```auto
gmt begin test png
gmt basemap -R0/1/0/25 -JX10c -Byafg+s"10@+6@+" -Bxafg
gmt end show

```

Doesn’t work

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<div class="post-metadata">

**Author:** ![pwessel](https://yyz1.discourse-cdn.com/flex047/user_avatar/forum.generic-mapping-tools.org/pwessel/32/30_2.png) [@pwessel](https://forum.generic-mapping-tools.org/u/pwessel)\
**Post date:** [February 3, 2022, 11:58pm UTC](https://forum.generic-mapping-tools.org/t/annotation-10-n/2592/5 "2022-02-03T23:58:13Z")

</div>

Turns out it was +u:

`gmt basemap -R0/1/0/25 -JX10c -Byafg+u"\26710@+6@+" -Bxafg -pdf t`

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<div class="post-metadata">

**Author:** ![PlanetGus](https://yyz1.discourse-cdn.com/flex047/user_avatar/forum.generic-mapping-tools.org/planetgus/32/303_2.png) [@PlanetGus](https://forum.generic-mapping-tools.org/u/PlanetGus)\
**Post date:** [February 4, 2022, 12:04am UTC](https://forum.generic-mapping-tools.org/t/annotation-10-n/2592/6 "2022-02-04T00:04:00Z")

</div>

> [@pwessel](#):
>
> -Byafg+u"\26710@+6@+"

Alright !  
Getting there 🙂  
Just waiting for -X and -Y on github and I should be able to wrap up that animation for the instagram account  
@Esteban82 … not finished but the layout is coming together 😉

 ![test](https://canada1.discourse-cdn.com/flex047/uploads/gmt/original/2X/e/e9ae72166ab5499104bdf589d4086eb7d69ae577.png)

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<div class="post-metadata">

**Author:** ![pablosaa](https://yyz1.discourse-cdn.com/flex047/user_avatar/forum.generic-mapping-tools.org/pablosaa/32/1757_2.png) [@pablosaa](https://forum.generic-mapping-tools.org/u/pablosaa)\
**Post date:** [February 4, 2022, 3:02pm UTC](https://forum.generic-mapping-tools.org/t/annotation-10-n/2592/7 "2022-02-04T15:02:54Z")

</div>

Looks very nice already, hope you can share the finished layout later!

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<div class="post-metadata">

**Author:** ![PlanetGus](https://yyz1.discourse-cdn.com/flex047/user_avatar/forum.generic-mapping-tools.org/planetgus/32/303_2.png) [@PlanetGus](https://forum.generic-mapping-tools.org/u/PlanetGus)\
**Post date:** [April 9, 2022, 8:48am UTC](https://forum.generic-mapping-tools.org/t/annotation-10-n/2592/8 "2022-04-09T08:48:30Z")

</div>

Done in showcase 🙂