# Spider Charts and Gruff: THE JOY OF GRAPHING

**URL:** <https://www.ruby-forum.com/t/spider-charts-and-gruff-the-joy-of-graphing/149517>\
**Category:** Rails\
**Created:** [September 25, 2008, 6:18pm UTC](https://www.ruby-forum.com/t/spider-charts-and-gruff-the-joy-of-graphing/149517 "2008-09-25T18:18:13Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![joep](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/j/87869e/32.png) [@joep](https://www.ruby-forum.com/u/joep)\
**Post date:** [September 25, 2008, 6:18pm UTC](https://www.ruby-forum.com/t/spider-charts-and-gruff-the-joy-of-graphing/149517/1 "2008-09-25T18:18:13Z")

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I hope this day finds you well.

I need to generate Spider charts (aka radar charts) , and am using Gruff  
to do so.

How can I show lines and axis numbers on a Spider chart? Here’s what  
I’m trying to make:

> **[Skitch | Evernote](https://evernote.com/products/skitch)**
>
> Get your point across with fewer words using annotation, shapes and sketches, so that your ideas become reality faster.

How can I have those 0 - 100 numbers, and the concentric cirles in the  
graph?

Joe

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<div class="post-metadata">

**Author:** ![joep](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/j/87869e/32.png) [@joep](https://www.ruby-forum.com/u/joep)\
**Post date:** [September 26, 2008, 3:53pm UTC](https://www.ruby-forum.com/t/spider-charts-and-gruff-the-joy-of-graphing/149517/2 "2008-09-26T15:53:04Z")

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The more I look at this, the more it seems that I can’t put concentric  
circles or the numbers. Am I wrong about this?

Also, is there any way to add “bottom-margin” to a spider graph in  
Gruff? It doesn’t look that way so far…