iOS Question Get xChart into a PDF

I am creating a report from my app. All the data is being inserted into a PDF. There may be a easy way to do it but how do you get an xChart into a pdf?

I tried Drawview but that was a no go crashes the code probably because of a type mismatch.

There may a fairly straightforward way to do it but being a newbie I am not seeing it.

Any suggestions would be greatly appreciated.

Thank you