The drawing package of the Ext JS 4 library is very powerful. We can do amazing stuff with it; charts are a clear example of what can be done with it. In this chapter we have learned how charts, series, and the drawing works in the Ext JS 4 library. We can now add some nice charts to our enterprise applications, and enhance the usability of the reports our applications have.
In the next chapter we are going to finish our application and will see the process of deploying an Ext JS 4 to a production environment. The following chapter is very important because we are going to see what steps you need to perform when releasing an Ext JS 4 application in a production environment.