Core Plot

This content has 9 years. Please, read this page keeping its age in your mind.

When you cope with data is better to visualize it.

A nice framework for iPhone is Core Plot, has many capabilities and is bast at the moment. The last version is 0.9

The only serious problem I faced, is the lack of documentation for the first steps.  Specifically if you are using Xcode 4.2… the situation is getting harder.

I found only one tutorial that uses the last Xcode. You can find it in Dr John Wordsworth site and specifically here.