# How can we mapped earthquake size in circle of different radius and color based on depth cpr

**URL:** <https://forum.generic-mapping-tools.org/t/how-can-we-mapped-earthquake-size-in-circle-of-different-radius-and-color-based-on-depth-cpr/1413>\
**Category:** Q&A\
**Tags:** gmt\
**Created:** [March 2, 2021, 10:53am UTC](https://forum.generic-mapping-tools.org/t/how-can-we-mapped-earthquake-size-in-circle-of-different-radius-and-color-based-on-depth-cpr/1413 "2021-03-02T10:53:25Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![ram2345](https://yyz1.discourse-cdn.com/flex047/user_avatar/forum.generic-mapping-tools.org/ram2345/32/2445_2.png) [@ram2345](https://forum.generic-mapping-tools.org/u/ram2345)\
**Post date:** [March 2, 2021, 10:53am UTC](https://forum.generic-mapping-tools.org/t/how-can-we-mapped-earthquake-size-in-circle-of-different-radius-and-color-based-on-depth-cpr/1413/1 "2021-03-02T10:53:25Z")

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Mapping legend in earthquake visualization

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**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:** [March 2, 2021, 4:28pm UTC](https://forum.generic-mapping-tools.org/t/how-can-we-mapped-earthquake-size-in-circle-of-different-radius-and-color-based-on-depth-cpr/1413/2 "2021-03-02T16:28:18Z")

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Look at `plot` with option `-Sc` (symbol circle [3rd column = size]) and `-Ccolor.cpt` (related to `makecpt` module)

```auto
gmt makecpt -T0/9 > color.cpt
gmt plot file.txt -Sc -Ccolor.cpt

text.txt = lon | lat | depth(radius)
```

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<div class="post-metadata">

**Author:** ![ram2345](https://yyz1.discourse-cdn.com/flex047/user_avatar/forum.generic-mapping-tools.org/ram2345/32/2445_2.png) [@ram2345](https://forum.generic-mapping-tools.org/u/ram2345)\
**Post date:** [March 2, 2021, 4:52pm UTC](https://forum.generic-mapping-tools.org/t/how-can-we-mapped-earthquake-size-in-circle-of-different-radius-and-color-based-on-depth-cpr/1413/3 "2021-03-02T16:52:27Z")

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This will give same size circle of different colour depending on depth  
I need different size circle for different magnitude having colour based on depth  
Also need to show these in colour bar and legends  
Someone plz suggest me.

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**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:** [March 2, 2021, 5:58pm UTC](https://forum.generic-mapping-tools.org/t/how-can-we-mapped-earthquake-size-in-circle-of-different-radius-and-color-based-on-depth-cpr/1413/4 "2021-03-02T17:58:00Z")

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See example 22 for plotting circles of varying sizes an colors based on extra data columns.