- 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
Histogram Chart Buckets
Following is an example of a Histogram Chart with custom bucket size.
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 histogram chart with custom bucket size.
Configurations
We've used bucketSize configuration to change default bucket size of histogram chart.
options.setBucketSize(5);
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.DataTable; import com.googlecode.gwt.charts.client.corechart.Histogram; import com.googlecode.gwt.charts.client.corechart.HistogramOptions; import com.googlecode.gwt.charts.client.options.Legend; import com.googlecode.gwt.charts.client.options.LegendPosition; import com.googlecode.gwt.charts.client.util.ChartHelper; public class HelloWorld implements EntryPoint { private Histogram chart; private void initialize() { ChartLoader chartLoader = new ChartLoader(ChartPackage.CORECHART); chartLoader.loadApi(new Runnable() { public void run() { // Create and attach the chart chart = new Histogram(); RootPanel.get().add(chart); draw(); } }); } private void draw() { // Prepare the data Object[][] data = new Object[][] { { "Student Roll No", "height" }, {"1", 80},{"2", 55},{"3", 68},{"4", 80},{"5", 54}, {"6", 70},{"7", 85},{"8", 78},{"9", 70},{"10", 58}, {"11", 90},{"12", 65},{"13", 88},{"14", 82},{"15", 65}, {"16", 86},{"17", 45},{"18", 62},{"19", 84},{"20", 75}, {"21", 82},{"22", 75},{"23", 58},{"24", 70},{"25", 85} }; DataTable dataTable = ChartHelper.arrayToDataTable(data); // Set options HistogramOptions options = HistogramOptions.create(); options.setTitle("Students height, in cm"); options.setLegend(Legend.create(LegendPosition.NONE)); options.setBucketSize(5); // Draw the chart chart.draw(dataTable,options); chart.setWidth("400px"); chart.setHeight("400px"); } public void onModuleLoad() { initialize(); } }
Result
Verify the result.
gwt_googlecharts_histogram_charts.htm
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