# Pie chart

**URL:** <https://www.ruby-forum.com/t/pie-chart/125989>\
**Category:** Rails\
**Created:** [January 14, 2008, 2:49pm UTC](https://www.ruby-forum.com/t/pie-chart/125989 "2008-01-14T14:49:54Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![mzalendo](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/m/6f9a4e/32.png) [@mzalendo](https://www.ruby-forum.com/u/mzalendo)\
**Post date:** [January 14, 2008, 2:49pm UTC](https://www.ruby-forum.com/t/pie-chart/125989/1 "2008-01-14T14:49:54Z")

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i have a rails applications which can record various tasks  
and times used to do those tasks within each day in a week,  
now i want it to have the abbility of displaying the  
percentage of time spent in each task in a pie chart. can  
someone please show me the neccesary formatting of data and  
other steps required for this to be done using gruff library

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**Author:** ![mzalendo](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/m/6f9a4e/32.png) [@mzalendo](https://www.ruby-forum.com/u/mzalendo)\
**Post date:** [January 14, 2008, 3:10pm UTC](https://www.ruby-forum.com/t/pie-chart/125989/2 "2008-01-14T15:10:16Z")

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Don’t know anything about Gruff, but what about using Google’s Chart  
API

> **[Charts  |  Google for Developers](https://developers.google.com/chart?csw=1&hl=ja)**
>
> ブラウザとモバイル デバイスのインタラクティブなグラフ。

which lets you generate pie charts using URLs such as:  
[![](http://chart.apis.google.com/chart?cht=p3&chd=s:hW&chs=250x100&chl=Hello%7CWorld) ](http://chart.apis.google.com/chart?cht=p3&chd=s:hW&chs=250x100&chl=Hello%7CWorld)

Any help?

On Jan 14, 1:49 pm, Mzalendo Charles \<rails-mailing-l…@andreas-

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<div class="post-metadata">

**Author:** ![mzalendo](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/m/6f9a4e/32.png) [@mzalendo](https://www.ruby-forum.com/u/mzalendo)\
**Post date:** [January 14, 2008, 3:25pm UTC](https://www.ruby-forum.com/t/pie-chart/125989/3 "2008-01-14T15:25:34Z")

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let me check if this is going to be a good alternative to gruff  
library

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<div class="post-metadata">

**Author:** ![mzalendo](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/m/6f9a4e/32.png) [@mzalendo](https://www.ruby-forum.com/u/mzalendo)\
**Post date:** [January 15, 2008, 7:36pm UTC](https://www.ruby-forum.com/t/pie-chart/125989/4 "2008-01-15T19:36:32Z")

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How about open-flash-chart? you can try.

On Jan 14, 2008 10:25 PM, Mzalendo Charles  
[removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid)

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<div class="post-metadata">

**Author:** ![mzalendo](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/m/6f9a4e/32.png) [@mzalendo](https://www.ruby-forum.com/u/mzalendo)\
**Post date:** [January 15, 2008, 10:15pm UTC](https://www.ruby-forum.com/t/pie-chart/125989/5 "2008-01-15T22:15:04Z")

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A nice gem for google charts  
[http://www.railslodge.com/ruby\_gems/10-googlecharts](http://www.railslodge.com/ruby_gems/10-googlecharts)

AJS wrote:

> Don’t know anything about Gruff, but what about using Google’s Chart  
> API
> 
> [Charts &nbsp;|&nbsp; Google for Developers](http://code.google.com/apis/chart/)
> 
> which lets you generate pie charts using URLs such as:  
> [http://chart.apis.google.com/chart?cht=p3&chd=s:hW&chs=250x100&chl=Hello|World](http://chart.apis.google.com/chart?cht=p3&chd=s:hW&chs=250x100&chl=Hello%7CWorld)
> 
> Any help?
> 
> On Jan 14, 1:49 pm, Mzalendo Charles \<rails-mailing-l…@andreas-