- GWT Google Charts Tutorial
- GWT Google Charts - Home
- GWT Google Charts - Overview
- Environment Setup
- Configuration Syntax
- GWT Google Charts - Area Charts
- GWT Google Charts - Bar Charts
- GWT Google Charts - Bubble Charts
- GWT Google Charts - Candlestick
- GWT Google Charts - Column Charts
- GWT Google Charts - Combination
- GWT Google Charts - Histogram
- GWT Google Charts - Line Charts
- GWT Google Charts - Maps
- GWT Google Charts - Organization
- GWT Google Charts - Pie Charts
- GWT Google Charts - Sankey Charts
- GWT Google Charts - Scatter Chart
- GWT Google Charts - Stepped Area
- GWT Google Charts - Table Chart
- GWT Google Charts - TreeMap Chart
- GWT Google Charts Resources
- GWT Google Charts - Quick Guide
- GWT Google Charts - Resources
- GWT Google Charts - Discussion
GWT Google Charts - Donut Chart
Following is an example of a Donut Chart.
We have already seen the configurations used to draw a chart in Google Charts Configuration Syntax chapter. Now, let us see an example of a Donut Chart.
Configurations
We've used pieHole configuration to show a Pie Chart as Donut Chart.
options.setPieHole(0.4);
Example
HelloWorld.java
package com.tutorialspoint.client; import com.google.gwt.core.client.EntryPoint; import com.google.gwt.user.client.ui.RootPanel; import com.googlecode.gwt.charts.client.ChartLoader; import com.googlecode.gwt.charts.client.ChartPackage; import com.googlecode.gwt.charts.client.ColumnType; import com.googlecode.gwt.charts.client.DataTable; import com.googlecode.gwt.charts.client.corechart.PieChart; import com.googlecode.gwt.charts.client.corechart.PieChartOptions; public class HelloWorld implements EntryPoint { private PieChart chart; private void initialize() { ChartLoader chartLoader = new ChartLoader(ChartPackage.CORECHART); chartLoader.loadApi(new Runnable() { public void run() { // Create and attach the chart chart = new PieChart(); RootPanel.get().add(chart); draw(); } }); } private void draw() { // Prepare the data DataTable data = DataTable.create(); data.addColumn(ColumnType.STRING, "Browser"); data.addColumn(ColumnType.NUMBER, "Percentage"); data.addRow("Firefox", 45.0); data.addRow("IE", 26.8); data.addRow("Chrome", 12.8); data.addRow("Safari", 8.5); data.addRow("Opera", 6.2); data.addRow("Others", 0.7); PieChartOptions options = PieChartOptions.create(); options.setTitle("Browser market shares at a specific website, 2014"); options.setPieHole(0.4); // Draw the chart chart.draw(data,options); chart.setWidth("400px"); chart.setHeight("400px"); } public void onModuleLoad() { initialize(); } }
Result
Verify the result.
gwt_googlecharts_pie_charts.htm
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