GWT Highcharts 使用样条的区域图

GWT Highcharts 使用样条的区域图 介绍

我们已经在《GWT Highcharts 入门案例》一章中看到了用于绘制此图表的步骤。现在让我们考虑以下示例以进一步了解使用样条的区域图。

图表

将图表类型配置为基于“areaaspline”。chart.type决定图表的系列类型。此处，默认值为“line”。

chart.setType(Type.AREA_SPLINE);

GWT Highcharts 使用样条的区域图 示例

package com.yiidian.helloWorld.client;


import com.google.gwt.core.client.EntryPoint;
import com.google.gwt.user.client.ui.RootPanel;
import org.moxieapps.gwt.highcharts.client.*;
import org.moxieapps.gwt.highcharts.client.labels.*;
import org.moxieapps.gwt.highcharts.client.plotOptions.AreaPlotOptions;

public class HelloWorld implements EntryPoint {
    public void onModuleLoad() {
        Chart chart = new Chart()
                .setType(Series.Type.AREA_SPLINE)
                .setChartTitleText("Average fruit consumption during one week")
                .setChartSubtitle(new ChartSubtitle()
                        .setStyle(new Style()
                                .setPosition("absolute")
                                .setRight("0px")
                                .setBottom("0px")
                        )
                )
                .setLegend(new Legend()
                        .setLayout(Legend.Layout.VERTICAL)
                        .setAlign(Legend.Align.RIGHT)
                        .setVerticalAlign(Legend.VerticalAlign.TOP)
                        .setX(-150)
                        .setY(100)
                        .setFloating(true)
                        .setBorderWidth(1)
                        .setBackgroundColor("#FFFFFF")
                )
                .setToolTip(new ToolTip()
                        .setFormatter(
                                new ToolTipFormatter() {
                                    public String format(ToolTipData toolTipData) {
                                        return "<b>" + toolTipData.getSeriesName() + "</b><br/>" +
                                                toolTipData.getXAsString() + ": " + toolTipData.getYAsLong();
                                    }
                                }
                        )
                )
                .setCredits(new Credits()
                        .setEnabled(false)
                )
                .setAreaPlotOptions(new AreaPlotOptions()
                        .setFillOpacity(0.5)
                );

        chart.getXAxis()
                .setCategories(
                        "Monday",  "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday", "Sunday"
                );

        chart.getYAxis()
                .setAxisTitleText("Y-Axis")
                .setLabels(new YAxisLabels()
                        .setFormatter(new AxisLabelsFormatter() {
                            public String format(AxisLabelsData axisLabelsData) {
                                return String.valueOf(axisLabelsData.getValueAsLong());
                            }
                        })
                );

        chart.addSeries(chart.createSeries()
                .setName("John")
                .setPoints(new Number[] {3, 4, 3, 5, 4, 10, 12})
        );
        chart.addSeries(chart.createSeries()
                .setName("Jane")
                .setPoints(new Number[] {1, 3, 4, 3, 3, 5, 4})
        );
        RootPanel.get().add(chart);
    }
}

输出结果为：