使用Achartengine可以实现多个堆叠条形图吗？

Question

我试着向演示示例stacked bar charts with achartengine添加另一组值，但由我引入的新值未出现在图表上。堆叠酒吧限于两个酒吧？

public Intent getIntent(Context context) { 

    String[] titles = new String[] { "Good", "Defect", "Repair" }; 
    List<double[]> values = new ArrayList<double[]>(); 

    values.add(new double[] { 14230, 12300, 1424, 15240, 15900, 19200, 
    22030, 21200, 19500, 15500, 12060, 14000 }); 
    values.add(new double[] { 14230, 12300, 14240, 15244, 15900, 19200, 
      22030, 21200, 19500, 15500, 12600, 14000 }); 
    values.add(new double[] { 5230, 7300, 9240, 10540, 7900, 9200, 12030, 
      11200, 9500, 10500, 11600, 13500 }); 

    int[] colors = new int[] { Color.GREEN, Color.YELLOW, Color.RED }; 

    XYMultipleSeriesRenderer renderer = buildBarRenderer(colors); 

    setChartSettings(renderer, "Machine Efficiency Rates", 
      "Machine", "NET produce", 0.5, 12.5, 0, 24000, Color.GRAY, 
      Color.LTGRAY); 

    renderer.getSeriesRendererAt(0).setDisplayChartValues(true); 
    renderer.getSeriesRendererAt(1).setDisplayChartValues(true); 
    renderer.getSeriesRendererAt(2).setDisplayChartValues(true); 
    renderer.setXLabels(12); 
    renderer.setYLabels(5); 
    renderer.setXLabelsAlign(Align.LEFT); 
    renderer.setYLabelsAlign(Align.LEFT); 
    renderer.setPanEnabled(true, false); 
    renderer.setZoomEnabled(true); 
    renderer.setZoomRate(1.1f); 
    renderer.setBarSpacing(0.5f); 
    return ChartFactory.getBarChartIntent(context, 
      buildBarDataset(titles, values), renderer, Type.STACKED); 

} 

Answer 1

AChartEngine显示堆叠条形图的方式存在误解。它并不真正叠加它们，而是将它们叠加显示。这意味着你会希望总是先添加更大的值，然后再添加更小的值，因为它会呈现第一个序列，第二个会在第一个序列之上，依此类推。

更新：从版本1.2.0开始，有新的HEAP堆叠条形图，以您需要的方式显示。

Answer 2

我找不到一个好的答案。但是，您可以使用getCombinedXYChartIntent 来创建多个堆叠条。

我使用CombinedTemperatureChart作为模板并进行了修改以实现此目的。

最初的原始代码是这样的

package org.achartengine.chartdemo.demo.chart; 

import java.util.ArrayList; 
import java.util.List; 

import org.achartengine.ChartFactory; 
import org.achartengine.chart.BarChart; 
import org.achartengine.chart.BubbleChart; 
import org.achartengine.chart.CubicLineChart; 
import org.achartengine.chart.LineChart; 
import org.achartengine.chart.PointStyle; 
import org.achartengine.model.XYMultipleSeriesDataset; 
import org.achartengine.model.XYSeries; 
import org.achartengine.model.XYValueSeries; 
import org.achartengine.renderer.XYMultipleSeriesRenderer; 
import org.achartengine.renderer.XYSeriesRenderer; 

import android.content.Context; 
import android.content.Intent; 
import android.graphics.Color; 
import android.graphics.Paint.Align; 

/** 
* Combined temperature demo chart. 
*/ 
public class CombinedTemperatureChart extends AbstractDemoChart { 
    /** 
    * Returns the chart name. 
    * 
    * @return the chart name 
    */ 
    public String getName() { 
    return "Combined temperature"; 
    } 

    /** 
    * Returns the chart description. 
    * 
    * @return the chart description 
    */ 
    public String getDesc() { 
    return "The average temperature in 2 Greek islands, water temperature and sun shine hours (combined chart)"; 
    } 

    /** 
    * Executes the chart demo. 
    * 
    * @param context the context 
    * @return the built intent 
    */ 
    public Intent execute(Context context) { 
    String[] titles = new String[] { "Crete Air Temperature", "Skiathos Air Temperature" }; 
    List<double[]> x = new ArrayList<double[]>(); 

    for (int i = 0; i < titles.length; i++) { 
     x.add(new double[] { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12 }); 
    } 

    List<double[]> values = new ArrayList<double[]>(); 

    values.add(new double[] { 12.3, 12.5, 13.8, 16.8, 20.4, 24.4, 26.4, 26.1, 23.6, 20.3, 17.2, 13.9 }); 
    values.add(new double[] { 9, 10, 11, 15, 19, 23, 26, 25, 22, 18, 13, 10 }); 
    int[] colors = new int[] { Color.GREEN, Color.rgb(200, 150, 0) }; 
    PointStyle[] styles = new PointStyle[] { PointStyle.CIRCLE, PointStyle.DIAMOND }; 
    XYMultipleSeriesRenderer renderer = buildRenderer(colors, styles); 
    //renderer.setPointSize(5.5f); 
    int length = renderer.getSeriesRendererCount(); 
    for (int i = 0; i < length; i++) { 
     XYSeriesRenderer r = (XYSeriesRenderer) renderer.getSeriesRendererAt(i); 
     r.setDisplayChartValues(true); 
     r.setChartValuesTextSize(25); 
     //r.setLineWidth(2); 
     r.setFillPoints(true); 
    } 
    setChartSettings(renderer, "Weather data", "Month", "Temperature", -1, 12.5, 0, 40, 
     Color.LTGRAY, Color.LTGRAY); 

    renderer.setXLabels(12); 
    renderer.setYLabels(10); 
    renderer.setShowGrid(true); 
    renderer.setXLabelsAlign(Align.RIGHT); 
    renderer.setYLabelsAlign(Align.RIGHT); 
    renderer.setZoomButtonsVisible(true); 
    renderer.setPanLimits(new double[] { -10, 20, -10, 40 }); 
    renderer.setZoomLimits(new double[] { -10, 20, -10, 40 }); 


    XYValueSeries sunSeries = new XYValueSeries("Sunshine hours"); 
    sunSeries.add(0.5, 17); 
    sunSeries.add(1.5, 18); 
    sunSeries.add(2.5, 19); 
    sunSeries.add(3.5, 19); 
    sunSeries.add(4.5, 20.8); 
    sunSeries.add(5.5, 24.9); 
    sunSeries.add(6.5, 26); 
    sunSeries.add(7.5, 27.8); 
    sunSeries.add(8.5, 28.4); 
    sunSeries.add(9.5, 25.5); 
    sunSeries.add(10.5, 23.5); 
    sunSeries.add(11.5, 19.5); 

    XYSeriesRenderer lightRenderer = new XYSeriesRenderer(); 
    lightRenderer.setColor(Color.YELLOW); 

    XYSeries waterSeries = new XYSeries("Water Temperature"); 
    waterSeries.add(0.5, 16); 
    waterSeries.add(1.5, 15); 
    waterSeries.add(2.5, 16); 
    waterSeries.add(3.5, 17); 
    waterSeries.add(4.5, 20); 
    waterSeries.add(5.5, 23); 
    waterSeries.add(6.5, 25); 
    waterSeries.add(7.5, 25.5); 
    waterSeries.add(8.5, 26.5); 
    waterSeries.add(9.5, 24); 
    waterSeries.add(10.5, 22); 
    waterSeries.add(11.5, 18); 

    renderer.setBarSpacing(2); 
    renderer.setBarWidth(2); 
    XYSeriesRenderer waterRenderer = new XYSeriesRenderer(); 
    waterRenderer.setColor(Color.argb(250, 0, 210, 250)); 

    XYMultipleSeriesDataset dataset = buildDataset(titles, x, values); 
    dataset.addSeries(0, sunSeries); 
    dataset.addSeries(1, waterSeries); 
    renderer.setBarWidth(0.5f); 
    renderer.addSeriesRenderer(lightRenderer); 
    renderer.addSeriesRenderer(waterRenderer); 

    waterRenderer.setDisplayChartValues(true); 
    waterRenderer.setChartValuesTextSize(25); 

    lightRenderer.setDisplayChartValues(true); 
    lightRenderer.setChartValuesTextSize(25); 

    String[] types = new String[] { BarChart.TYPE, BarChart.TYPE, BarChart.TYPE, BarChart.TYPE }; 
    Intent intent = ChartFactory.getCombinedXYChartIntent(context, dataset, renderer, types, 
     "Weather parameters"); 
    return intent; 
    } 

} 

我希望有人仍然需要这一点，它需要一定的时间弄明白。 不幸的是，我没有要点粘贴图像。