Creating Curves based on Data Points

[abinashparija]

Actually I am having a number of series points based on which i am doing XYLine Charts ,But i have a requirement that
in some plots will be curves rather than lines joining the data points.

How To Do It ?

[mkivinie]

Would XYSplineRenderer help?
http://www.jfree.org/jfreechart/api/jav ... derer.html

[abinashparija]

The Problem of creating XYSpline Chart is Using CreateChartfactory, i cant have a chart Object where tool tip will be true ,So even if Using XYSplinerenderer i can draw splines but unable to enable tooltip.Can any body suggest any solution for the same.

the procedure i am following is as below

Code: Select all

public static ArrayList createXYSplineChart(ServletContext ctx,String path, XYDataset dataset,String title,String xAxix,String yAxix) 
	{

	 ArrayList chartPathList=new ArrayList();
         NumberAxis xAxis = new NumberAxis(xAxix);
         //xAxis.setAutoRangeIncludesZero(false);
         NumberAxis yAxis = new NumberAxis(yAxix);
         //yAxis.setAutoRangeIncludesZero(false);
         
         
         XYSplineRenderer  renderer = new XYSplineRenderer();
         XYPlot plot = new XYPlot(dataset, xAxis, yAxis, renderer);
        
         plot.setBackgroundPaint(Color.lightGray);
         plot.setDomainGridlinePaint(Color.white);
         plot.setRangeGridlinePaint(Color.white);
         //plot.setAxisOffset(new RectangleInsets(4, 4, 4, 4));

         // create and return the chart panel...
            JFreeChart chart = new JFreeChart(title, 
                 JFreeChart.DEFAULT_TITLE_FONT, plot, true);
            chart.setBackgroundPaint(Color.white);         
            Paint bluepaint = new Color(59, 115, 185);						
		    Paint blackpaint = new Color(0,0,0);						
		    Paint redpaint = new Color(255, 0, 0);						
//			Font lableFont = new Font("verdana", Font.BOLD, 10);
//			Font itemFont = new Font("verdana", Font.PLAIN, 4);
//			Font titleFont = new Font("verdana", Font.BOLD, 12);				
			chart.setAntiAlias(true);			
			chart.setBorderVisible(true);				
			chart.getLegend().setPosition(RectangleEdge.BOTTOM);
//            
//			int totalSeries=dataset.getSeriesCount();
	    	renderer.setSeriesPaint(0, blackpaint);
	    	renderer.setSeriesPaint(1, redpaint);
	    	renderer.setSeriesPaint(2, redpaint);
	    	renderer.setSeriesPaint(3, bluepaint);	

	        try {
	        	System.out.println("USER DiR------->"+path);
	        	//ChartUtilities.saveChartAsPNG(new File(path),chart,700,500);
	        	ChartUtilities.saveChartAsPNG(new File(ctx.getRealPath(path)),chart,700,500);
				
	        	//File file=null;
	        	
	        	
			} 
	        catch (IOException e) {		        
	        	e.printStackTrace();
			}
	        HashMap chartMap = new HashMap();
			chartMap.put("chart",chart);
			chartMap.put("chartPath",path);
			chartPathList.add(chartMap);
	     return chartPathList;

Thanks in advance