We are building a finance website and need to chart stocks along an x and y axis and would like to use pinch and zoom interaction to change focus on the charts. What is the most accessible charting framework for mobile devices?We are building for all current generation smart phones and require our users to have JavaScript enabled. 
What is the most accessible charting framework for mobile devices?
mobile
If you are charting stocks you should use http://www.highcharts.com/ which are javascript based and work very well on smart phones and tablets. Specifically look at their highstocks charting library demo http://www.highcharts.com/stock/demo/They have an excellent API and are very easy to use