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I'm in urgent need of an Objective-C/Cocoa/Cocoa Touch framework to handle simple charting; pie chards, histograms etc.

The only thing that comes close is:

http://code.google.com/p/gchart-objc/

But it seems to be quite an early release and not maintained.

Has anyone created or used such a framework or library.

Richard Stelling
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4 Answers4

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I use Core Plot. See this blog post for a tutorial.

Alon Gubkin
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    core plot is good. Moreover it is being actively developed, so you can actually get in touch with the developer and have issues addressed quickly. – futureelite7 Mar 16 '10 at 12:43
  • Core Plot is an outstanding project. The past year I have faced the prospect that I was going to have to do all of this by hand. (I'm writing an application that compares metagenomic DNA sequences and graphs the results). Core Plot while still a small project currently fills a niche that I think is only going to grow, especially in the scientific community. List of blog posts on using it from their own wiki [here](http://code.google.com/p/core-plot/wiki/CorePlotOnTheWeb) – Rick Schmidt Mar 16 '10 at 13:15
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I'll echo the suggestion of core-plot, and add some additional plotting references that may be of interest:

http://cocoaheads.byu.edu/resources/plot

Quinn Taylor
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you can have a look at DSBarChart. It is a tiny library for creating Histograms.

masukomi
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dhilipsiva
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this is also a legend lib for charts : https://github.com/danielgindi/Charts