What is a good Javascript graphing library to use with GWT application?

Do you have any suggestions o开发者_如何学编程f graphing libraries to use with a GWT project? I need to graph a set of data points and several lines. Also some shading of the area under a line. I am open to suggestions of straight Javascript libraries or Java that I can just use with GWT.

D3.js

gwt-d3 is a GWT wrapper library around the D3.js library

Google Visualization API

Google Visualization API has a GWT binding which is no longer under active development

I recommend GWT Highcharts, a GWT wrapper of Highcharts library.

I'm currently using Google Visualization API but just wanted to bring attention to:

raphaelGWT (http://code.google.com/p/raphaelgwt/)
Ext-GWT (http://www.extjs.com/products/gwt/)

Keep in mind not ALL of the Google Visualization charts are completely javascript (ie The Motion Chart which is flashed based).