blocks|key|4800807|text|是的，Gruff在这方面很酷。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|4800808|entityMap|0|LINK|mutability|MUTABLE|url|https://github.com/topfunky/gruff^0|3|5|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@$A|M|B|N|1|O]]|C|$]]|$1|D|3|-4|5|6|7|P|8|@]|9|@]|C|$]]]|E|$F|$5|G|H|I|C|$J|K]]]]

Yes, <a href="https://github.com/topfunky/gruff" rel="nofollow">Gruff</a> is pretty cool for this.

blocks|key|4519028|text|只需一行ruby代码，就可以轻松集成到rails应用程序中。希望这对任何人都有帮助..|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4519029|4519030|+https://github.com/ankane/chartkick|blockquote|offset|length|4519031|4519032|entityMap|0|LINK|mutability|MUTABLE|url|https://github.com/ankane/chartkick^0|0|0|1|Z|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|R|8|@]|9|@]|A|$]]|$1|C|3|D|5|E|7|S|8|@]|9|@$F|T|G|U|1|V]]|A|$]]|$1|H|3|-4|5|6|7|W|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|X|8|@]|9|@]|A|$]]]|J|$K|$5|L|M|N|A|$O|P]]]]

This provides easy integration to your rails app by just one line of ruby code. hope this could help to anybody..

<blockquote>
 <a href="https://github.com/ankane/chartkick" rel="nofollow">https://github.com/ankane/chartkick</a>
</blockquote>

blocks|key|2903537|text|谷歌的javascript图表库可以用于简单的任务http://code.google.com/apis/chart/|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|2903538|还有很多包装GoogleCharts+http://googlecharts.rubyforge.org/+https://github.com/mattetti/googlecharts的gem。|2903539|编辑:没有看到服务器端约束。忽略我的回答:)|2903540|entityMap|0|LINK|mutability|MUTABLE|url|http://code.google.com/apis/chart/|1|http://googlecharts.rubyforge.org/|2|https://github.com/mattetti/googlecharts^0|P|Y|0|0|J|Y|1|1I|14|2|0|0^^$0|@$1|2|3|4|5|6|7|T|8|@]|9|@$A|U|B|V|1|W]]|C|$]]|$1|D|3|E|5|6|7|X|8|@]|9|@$A|Y|B|Z|1|10]|$A|11|B|12|1|13]]|C|$]]|$1|F|3|G|5|6|7|14|8|@]|9|@]|C|$]]|$1|H|3|-4|5|6|7|15|8|@]|9|@]|C|$]]]|I|$J|$5|K|L|M|C|$N|O]]|P|$5|K|L|M|C|$N|Q]]|R|$5|K|L|M|C|$N|S]]]]

Google's javascript charting library is ok for simple tasks
<a href="http://code.google.com/apis/chart/" rel="nofollow">http://code.google.com/apis/chart/</a>

And there are a lot of gems that wrap GoogleCharts
<a href="http://googlecharts.rubyforge.org/" rel="nofollow">http://googlecharts.rubyforge.org/</a>
https://github.com/mattetti/googlecharts

EDIT: Didn't see the server side constraint. Ignore my answer :)

blocks|key|2903550|text|@bandito给出了google+javascript图表库的例子。如果你发送API中的参数，Google中的Chart+API会发回所需的图片。参见Image+Charts。这里有一个专门针对pie+charts的部分。我用过一次，发现它非常有用。当然，图表的加载时间是有限制的，但对于图中所示的简单饼图来说，我认为这是足够的。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|2903551|要了解getting+started的工作原理，请参阅API。|2903552|另请参阅Chart+Wizard|2903553|entityMap|0|LINK|mutability|MUTABLE|url|http://code.google.com/apis/chart/image/|1|http://code.google.com/apis/chart/image/docs/gallery/pie_charts.html|2|http://code.google.com/apis/chart/image/docs/making_charts.html|3|http://code.google.com/apis/chart/image/docs/chart_wizard.html^0|1C|6|1K|9|24|C|0|2Q|A|1|0|3|F|2|0|4|C|3|0^^$0|@$1|2|3|4|5|6|7|X|8|@$9|Y|A|Z|B|C]|$9|10|A|11|B|C]]|D|@$9|12|A|13|1|14]|$9|15|A|16|1|17]]|E|$]]|$1|F|3|G|5|6|7|18|8|@]|D|@$9|19|A|1A|1|1B]]|E|$]]|$1|H|3|I|5|6|7|1C|8|@]|D|@$9|1D|A|1E|1|1F]]|E|$]]|$1|J|3|-4|5|6|7|1G|8|@]|D|@]|E|$]]]|K|$L|$5|M|N|O|E|$P|Q]]|R|$5|M|N|O|E|$P|S]]|T|$5|M|N|O|E|$P|U]]|V|$5|M|N|O|E|$P|W]]]]

@bandito has given example of google javascript charting library. Well, there is <code>Chart API</code> from <code>Google</code> which sends back the required image, if you send the parameters in the API URL. See <a href="http://code.google.com/apis/chart/image/" rel="nofollow">Image Charts</a>. There is a specific section for <a href="http://code.google.com/apis/chart/image/docs/gallery/pie_charts.html" rel="nofollow">pie charts</a> there. I have used it once and found it very useful. Ofcourse there is loading time for the chart, and limitations to how far it is customizable, but for a simple pie chart like the one shown in figure, I think this is adequate. 

See the <a href="http://code.google.com/apis/chart/image/docs/making_charts.html" rel="nofollow">getting started</a> for understanding how the API works.

Also see <a href="http://code.google.com/apis/chart/image/docs/chart_wizard.html" rel="nofollow">Chart Wizard</a>

blocks|key|4800908|text|对于Rails，请查看https://github.com/ragingsquirrel3/quacky-charts上的庸俗图表|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|4800909|entityMap|0|LINK|mutability|MUTABLE|url|https://github.com/ragingsquirrel3/quacky-charts^0|B|1C|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@$A|M|B|N|1|O]]|C|$]]|$1|D|3|-4|5|6|7|P|8|@]|9|@]|C|$]]]|E|$F|$5|G|H|I|C|$J|K]]]]

For Rails, look at quacky-charts at <a href="https://github.com/ragingsquirrel3/quacky-charts" rel="nofollow">https://github.com/ragingsquirrel3/quacky-charts</a>

blocks|key|4518962|text|您可以使用rchart绘制各种图表。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|4518963|entityMap|0|LINK|mutability|MUTABLE|url|https://github.com/amardaxini/rchart^0|5|6|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@$A|M|B|N|1|O]]|C|$]]|$1|D|3|-4|5|6|7|P|8|@]|9|@]|C|$]]]|E|$F|$5|G|H|I|C|$J|K]]]]

You can use <a href="https://github.com/amardaxini/rchart" rel="nofollow">rchart</a> for plotting various chart.

Is there any library that can produce server-side pie charts using Ruby?

Such as this:
<img src="https://i.stack.imgur.com/rpKW5.png" alt="enter image description here">

Ruby on Rails Pie Chart Library?

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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