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ExtGWT Rich Internet Application Cookbook by Odili Charles Opute

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Visualizing data from a component

It is often required to display a chart alongside a data-bound component so that the chart provides a graphical representation of the same data that is presented by the other component. This can be instantly gratifying and serve as a real-time feedback system if data changes in the component are immediately reflected in the chart.

Consider having a pie chart that shows the stock performance of an industry. A sort of binding can be set()up between the chart and the grid so that as stock prices change, the grid's data is updated thereby triggering an update to the chart as well.

We will simulate this with a grouped grid that allows changes to a Price column and see how we can benefit by instantly translating the ...

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