包含绘图频段的样条图

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以下是一个包含绘图频段的样条图示例。

我们在“Highcharts 配置语法”章节中已经看到了用于绘制图表使用了配置。现在，让我们来了解一个样条图的示例，其中包含绘图频段，并采用了额外的配置/步骤。

配置

使用 yAxis.plotBands 属性配置频段。使用“from”和“to”属性设置频段范围。使用“color”属性设置频段颜色。使用“label”属性设置频段标签样式。

yAxis

yAxis.setAxisTitleText("Wind speed (m/s)")  
   .setMin(0)  
   .setMinorGridLineWidth(0)  
   .setGridLineWidth(0)  
   .setAlternateGridColor(null)  
   .setPlotBands(  
      yAxis.createPlotBand()   // Light air  
         .setFrom(0.3)  
         .setTo(1.5)  
         .setColor(blueColor)  
         .setLabel(new PlotBandLabel()  
            .setText("Light air")  
            .setStyle(new Style()  
               .setColor("#606060")  
            )  
         ),  
      yAxis.createPlotBand()   // Light breeze  
         .setFrom(1.5)  
         .setTo(3.3)  
         .setColor(clearColor)  
         .setLabel(new PlotBandLabel()  
            .setText("Light breeze")  
            .setStyle(new Style()  
               .setColor("#606060")  
            )  
         )
   );

示例

HelloWorld.java

package com.tutorialspoint.client;

import java.util.Date;

import org.moxieapps.gwt.highcharts.client.Chart;
import org.moxieapps.gwt.highcharts.client.Color;
import org.moxieapps.gwt.highcharts.client.Point;
import org.moxieapps.gwt.highcharts.client.Series.Type;
import org.moxieapps.gwt.highcharts.client.Style;
import org.moxieapps.gwt.highcharts.client.ToolTip;
import org.moxieapps.gwt.highcharts.client.ToolTipData;
import org.moxieapps.gwt.highcharts.client.ToolTipFormatter;
import org.moxieapps.gwt.highcharts.client.XAxis;

import org.moxieapps.gwt.highcharts.client.YAxis;
import org.moxieapps.gwt.highcharts.client.labels.AxisLabelsData;
import org.moxieapps.gwt.highcharts.client.labels.AxisLabelsFormatter;
import org.moxieapps.gwt.highcharts.client.labels.PlotBandLabel;
import org.moxieapps.gwt.highcharts.client.labels.YAxisLabels;

import org.moxieapps.gwt.highcharts.client.plotOptions.Marker;
import org.moxieapps.gwt.highcharts.client.plotOptions.SplinePlotOptions;
import org.moxieapps.gwt.highcharts.client.Axis;


import com.google.gwt.core.client.EntryPoint;
import com.google.gwt.i18n.client.DateTimeFormat;
import com.google.gwt.user.client.ui.RootPanel;

public class HelloWorld implements EntryPoint {
   public void onModuleLoad() {
      Chart chart = new Chart()
         .setType(Type.SPLINE)
         .setChartTitleText("Wind speed during two days")
         .setChartSubtitleText("October 6th and 7th 2009 at two locations in Vik i Sogn, Norway");

         XAxis xAxis = chart.getXAxis().setType(Axis.Type.DATE_TIME);

         YAxis yAxis = chart.getYAxis();
         final Color blueColor = new Color(68, 170, 213, 0.1);  
         final Color clearColor = new Color(0, 0, 0, 0);  
         yAxis.setAxisTitleText("Wind speed (m/s)")  
            .setMin(0)  
            .setMinorGridLineWidth(0)  
            .setGridLineWidth(0)  
            .setAlternateGridColor(null)  
            .setPlotBands(  
               yAxis.createPlotBand()   // Light air  
                  .setFrom(0.3)  
                  .setTo(1.5)  
                  .setColor(blueColor)  
                  .setLabel(new PlotBandLabel()  
                     .setText("Light air")  
                     .setStyle(new Style()  
                        .setColor("#606060")  
                     )  
                  ),  
               yAxis.createPlotBand()   // Light breeze  
                  .setFrom(1.5)  
                  .setTo(3.3)  
                  .setColor(clearColor)  
                  .setLabel(new PlotBandLabel()  
                     .setText("Light breeze")  
                     .setStyle(new Style()  
                        .setColor("#606060")  
                     )  
                  ),  
               yAxis.createPlotBand()   // Gentle breeze  
                  .setFrom(3.3)  
                  .setTo(5.5)  
                  .setColor(blueColor)  
                  .setLabel(new PlotBandLabel()  
                     .setText("Gentle breeze")  
                     .setStyle(new Style()  
                        .setColor("#606060")  
                     )  
                  ),  
               yAxis.createPlotBand()   // Moderate breeze  
                  .setFrom(5.5)  
                  .setTo(8)  
                  .setColor(clearColor)  
                  .setLabel(new PlotBandLabel()  
                     .setText("Moderate breeze")  
                     .setStyle(new Style()  
                        .setColor("#606060")  
                     )  
                  ),  
               yAxis.createPlotBand()   // Fresh breeze  
                  .setFrom(8)  
                  .setTo(11)  
                  .setColor(blueColor)  
                  .setLabel(new PlotBandLabel()  
                     .setText("Fresh breeze")  
                     .setStyle(new Style()  
                        .setColor("#606060")  
                     )  
                  ),  
               yAxis.createPlotBand()   // Strong breeze  
                  .setFrom(11)  
                  .setTo(14)  
                  .setColor(clearColor)  
                  .setLabel(new PlotBandLabel()  
                     .setText("Strong breeze")  
                     .setStyle(new Style()  
                        .setColor("#606060")  
                     )  
                  ),  
               yAxis.createPlotBand()   // High wind  
                  .setFrom(14)  
                  .setTo(15)  
                  .setColor(blueColor)  
                  .setLabel(new PlotBandLabel()  
                     .setText("High wind")  
                     .setStyle(new Style()  
                        .setColor("#606060")  
                     )  
                  )  
            );  
         ToolTip toolTip = new ToolTip(); 
         toolTip.setFormatter(new ToolTipFormatter() {
            @Override
            public String format(ToolTipData toolTipData) {
               return DateTimeFormat.getFormat("d. MMMM YYYY HH:00").format(  
                  new Date(toolTipData.getXAsLong())  
                  ) + ": " + toolTipData.getYAsDouble() + " m/s";
            }
         });

         chart.setToolTip(toolTip);

         chart.setSplinePlotOptions(new SplinePlotOptions()  
            .setLineWidth(4)  
            .setHoverStateLineWidth(5)  
            .setMarker(new Marker()  
               .setEnabled(false)  
               .setHoverState(new Marker()  
                  .setEnabled(true)  
                  .setSymbol(Marker.Symbol.CIRCLE)  
                  .setRadius(5)  
                  .setLineWidth(1)  
               )  
            )  
            .setPointInterval(3600000)  // one hour  
            .setPointStart(  
               DateTimeFormat.getFormat("yyyy-MM-dd").parse("2009-10-06").getTime()  
            )  
         );  

         chart.addSeries(chart.createSeries()  
            .setName("Hestavollane")  
            .setPoints(new Number[]{  
               4.3, 5.1, 4.3, 5.2, 5.4, 4.7, 3.5, 4.1, 5.6, 7.4, 6.9, 7.1,  
               7.9, 7.9, 7.5, 6.7, 7.7, 7.7, 7.4, 7.0, 7.1, 5.8, 5.9, 7.4,  
               8.2, 8.5, 9.4, 8.1, 10.9, 10.4, 10.9, 12.4, 12.1, 9.5, 7.5,  
               7.1, 7.5, 8.1, 6.8, 3.4, 2.1, 1.9, 2.8, 2.9, 1.3, 4.4, 4.2,  
               3.0, 3.0  
            })  
         );  
         chart.addSeries(chart.createSeries()  
            .setName("Voll")  
            .setPoints(new Number[] {  
               0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.1, 0.0, 0.3, 0.0,  
               0.0, 0.4, 0.0, 0.1, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0,  
               0.0, 0.6, 1.2, 1.7, 0.7, 2.9, 4.1, 2.6, 3.7, 3.9, 1.7, 2.3,  
               3.0, 3.3, 4.8, 5.0, 4.8, 5.0, 3.2, 2.0, 0.9, 0.4, 0.3, 0.5, 0.4  
            })  
         );  
      RootPanel.get().add(chart);
   }
}

结果

验证结果。

Spline Chart with Plot bands
gwt_highcharts_line_charts.htm
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