Jfreechart 一个图上多个坐标，并指派多个数据集到某个坐标上

最近开发需要使用 jfreechart，网上的东西不算太多，这个jar虽然免费，但是资料收费，智能自己研究了

 

整体思路上，先创建出chart，在获取plot，在plot上面逐个添加坐标，最后将坐标很数据集对map映射，得到结果了、

 

 

将坐标信息，添加到xyseries中

 

public static void initSeries(XYSeries series,Map<Integer,Integer> data){
		for(Map.Entry<Integer, Integer> entry : data.entrySet()){
			series.add(entry.getKey(),entry.getValue());
		}
}

 实现，多个坐标纵轴

 

public static JFreeChart getMuitiAxisersfinal(List<String> names,Map<String,Map<Integer,Integer>> datas,Map <String,String> whichAxis,List <String> axisName){
		Color []colors={Color.BLUE,Color.GREEN,Color.RED,Color.YELLOW,Color.ORANGE,Color.PINK};
		JFreeChart chart = null;
		XYPlot plot;  
		boolean iniflag=true;
		if(names==null||names.size()==0){
			return null;
		}
		if( axisName==null|| axisName.size()==0){
			return null;
		}
		if(datas==null||datas.size()==0){
			return null;
		}
		for(int i=0;i<names.size();i++){
			XYSeries series = new XYSeries(new NameComparable<String>(names.get(i))); 
			Map<Integer,Integer>data=datas.get(names.get(i));
			initSeries(series,data);
			XYSeriesCollection dataset=new XYSeriesCollection();
			dataset.addSeries(series);
			if(iniflag){
				chart = ChartFactory.createXYLineChart("MultiAxis", "X axis",  
		                ""+axisName.get(0), dataset, PlotOrientation.VERTICAL, true, true,  
		                false);
				iniflag=false;
				for(int j=1;j<axisName.size();j++){
					NumberAxis axis2 = new NumberAxis("The"+axisName.get(j)+" Axis");
					int y=i>colors.length-1?i%colors.length:i;
					axis2.setAxisLinePaint(colors[y]);  
					axis2.setLabelPaint(colors[y]);  
				    axis2.setTickLabelPaint(colors[y]); 
				    plot = chart.getXYPlot();
				    plot.setRangeAxis(j, axis2); 
				}
			}
			plot = chart.getXYPlot(); 
			int y=i>colors.length-1?i%colors.length:i;
			plot.setDataset(i, dataset);  
			String atAxisName= whichAxis.get(names.get(i));
			plot.mapDatasetToRangeAxis(i, axisName.indexOf(atAxisName));    
			XYLineAndShapeRenderer render2 =  new XYLineAndShapeRenderer();   
		    render2.setSeriesPaint(i, colors[y]);  
		    plot.setRenderer(i, render2);  //可能理解有点问题
			
			
		}
		TextTitle copyright = new TextTitle(" Test ");  
        copyright.setPosition(RectangleEdge.BOTTOM);  
        copyright.setHorizontalAlignment(HorizontalAlignment.RIGHT);  
        copyright.setFont(new Font("黑体", 12, 12));  
        chart.addSubtitle(copyright);  
        chart.getLegend().setItemFont(new Font("黑体", 12, 12));  
		return chart;
	}

 最后是测试数据

 

public static void main(String []args){
		List<String> list=new ArrayList<String>();
		list.add("系列一");
		list.add("系列二");
		list.add("系列三");
		Map <String,Map<Integer,Integer>> map=new HashMap<String,Map<Integer,Integer>>();
		Map<Integer,Integer> data=new HashMap<Integer,Integer>();
		data.put(2011, 100);
		data.put(2013, 200);
		data.put(2015, 400);
		Map<Integer,Integer> dat2a=new HashMap<Integer,Integer>();
		dat2a.put(2011, 20);
		dat2a.put(2014, 40);
		dat2a.put(2017, 30);
		Map<Integer,Integer> dat3a=new HashMap<Integer,Integer>();
		dat3a.put(2015, 2);
		dat3a.put(2016, 4);
		dat3a.put(2017, 6);
		map.put("系列一", data);
		map.put("系列二", dat2a);
		map.put("系列三", dat3a);
		Map<String,String> axisToname=new HashMap<String,String>();
		axisToname.put("系列一","Test1");
		axisToname.put("系列二", "Test2");
		axisToname.put("系列三", "Test3");
		List <String>axitName=new ArrayList<String>();
		axitName.add("坐标一");
		axitName.add("坐标二");
		Map<String,String> whichAxis=new HashMap<String,String>();
		whichAxis.put("系列一","坐标一");
		whichAxis.put("系列二","坐标一");
		whichAxis.put("系列三","坐标二");
		JFreeChart chart= getMuitiAxisersfinal(list,map,whichAxis,axitName);
		ChartFrame frame = new ChartFrame("多坐标轴", chart);  
	    frame.pack();  
	    frame.setVisible(true);  
	}

 

我也是个新手，刚刚学校jfreechart，希望和大家一起交流