A bar chart is a visualization with rectangular bars having lengths proportional to the values represented. These rectangular bars can be drawn or plotted vertically (by tradition) or horizontally (if supported by the API).
The charts API is not core to GXT, instead it's a plugin based on the Open Flash Charts 2 library and this requires some extra plumbing to get it up and running. The required steps are as follows:
chartsmodule in your
.gwt.xmlfile by adding the line
<inherits name= "com.extjs gxt.charts.chart" />to the