I am using JFreeChart to populate a graph from a csv file, i have managed to create multiple datasets from the file and graphed the data.
The SVG images are being re-written to the “file.svg”, so nothing looks pretty at all. Question is, how can i create a single SVG image from the multiple datasets and If only i knew how to get each chart, plot it orderly and draw all of them to a SVG file.
package freechart;
import java.util.*;
import java.text.*;
import java.io.*;
import java.awt.*;
import java.util.StringTokenizer;
import javax.swing.*;
import org.apache.batik.dom.GenericDOMImplementation;
import org.apache.batik.svggen.SVGGraphics2D;
import org.jfree.chart.*;
import org.jfree.chart.axis.*;
import org.jfree.chart.plot.*;
import org.jfree.chart.renderer.xy.*;
import org.jfree.data.time.*;
import org.jfree.ui.*;
import org.w3c.dom.DOMImplementation;
import org.w3c.dom.Document;
import java.awt.Rectangle;
import java.awt.geom.Rectangle2D;
public class StockHistoryChart extends JPanel
{
private static final long serialVersionUID = 1L;
// Holds the data
public TimeSeriesCollection dataset = new TimeSeriesCollection();
public TimeSeriesCollection datasetPhysical = new TimeSeriesCollection();
public TimeSeriesCollection datasetS = new TimeSeriesCollection();
public TimeSeriesCollection datasetMM = new TimeSeriesCollection();
public TimeSeriesCollection datasetIF = new TimeSeriesCollection();
public TimeSeriesCollection datasetWP = new TimeSeriesCollection();
// Create a chart
@SuppressWarnings("unused")
private JFreeChart chart;
// Create a panels that can show our chart
@SuppressWarnings("unused")
private ChartPanel panel;
private String stockSymbol;
private String CurrentMonth;
@SuppressWarnings({ "deprecation", "resource", "unused" })
public StockHistoryChart( String filename )
{
try
{
// Get Stock Symbol
this.stockSymbol = filename.substring( 0, filename.indexOf( '.' ) );
// Create time series
TimeSeries PVC = new TimeSeries( "Physical Count", Day.class );
//TimeSeries PV = new TimeSeries( "Physical", Day.class );
TimeSeries STKC = new TimeSeries( "S Count", Day.class );
//TimeSeries STKTP = new TimeSeries( "S", Day.class );
TimeSeries MMTPC = new TimeSeries( "MM Count", Day.class );
//TimeSeries MMTP = new TimeSeries( "MM", Day.class );
TimeSeries IFSC = new TimeSeries( "IF Count", Day.class );
//TimeSeries IFSTP = new TimeSeries( "IF", Day.class );
TimeSeries WPC = new TimeSeries( "WP Count", Day.class );
//TimeSeries WPTP = new TimeSeries( "WP", Day.class );
BufferedReader br = new BufferedReader( new FileReader( filename ) );
String key = br.readLine();
String line = br.readLine();
while( line != null &&
!line.startsWith( "<!--" ) )
{
StringTokenizer st = new StringTokenizer( line, ",", false );
Day day = getDay( st.nextToken() );
double PVCValue = Double.parseDouble( st.nextToken() );
double PVValue = Double.parseDouble( st.nextToken() );
double STKCValue = Double.parseDouble( st.nextToken() );
double STKTPValue = Double.parseDouble( st.nextToken() );
double MMTPCValue = Double.parseDouble( st.nextToken() );
double MMTPValue = Double.parseDouble( st.nextToken() );
double IFSCValue = Double.parseDouble( st.nextToken() );
double IFSTPValue = Double.parseDouble( st.nextToken() );
double WPCValue = Double.parseDouble( st.nextToken() );
double WPTPValue = Double.parseDouble( st.nextToken() );
double TTCValue = Double.parseDouble( st.nextToken() );
double TTAValue = Double.parseDouble( st.nextToken() );
// Add this value to our series'
PVC.addOrUpdate( day, PVCValue );
//PV.addOrUpdate( day, PVValue );
STKC.addOrUpdate( day, STKCValue );
//STKTP.addOrUpdate( day, STKTPValue );
MMTPC.addOrUpdate( day, MMTPCValue );
//MMTP.addOrUpdate( day, MMTPValue );
IFSC.addOrUpdate( day, IFSCValue );
//IFSTP.addOrUpdate( day, IFSTPValue );
WPC.addOrUpdate( day, WPCValue );
//WPTP.addOrUpdate( day, WPTPValue );
TTC.addOrUpdate( day, TTCValue );
//TTA.addOrUpdate( day, TTAValue );
// Read the next day
line = br.readLine();
}
// Build the datasets
dataset.addSeries( PVC );
//dataset.addSeries( PV );
dataset.addSeries( STKC );
//dataset.addSeries( STKTP );
dataset.addSeries(MMTPC);
//dataset.addSeries(MMTP);
dataset.addSeries(IFSC);
//dataset.addSeries(IFSTP);
dataset.addSeries(WPC);
//dataset.addSeries(WPTP);
dataset.addSeries(TTC);
//dataset.addSeries(TTA);
datasetPhysical.addSeries(PVC);
//datasetPhysical.addSeries(PV);
datasetS.addSeries(STKC);
//datasetS.addSeries(STKTP);
datasetMM.addSeries(MMTPC);
//datasetMM.addSeries(MMTP);
datasetIF.addSeries(IFSC);
//datasetIF.addSeries(IFSTP);
datasetWP.addSeries(WPC);
//datasetWP.addSeries(WPTP);
dataset.setDomainIsPointsInTime(true);
//datasetPhysical.setDomainIsPointsInTime(true);
datasetS.setDomainIsPointsInTime(true);
//datasetS.setDomainIsPointsInTime(true);
datasetMM.setDomainIsPointsInTime(true);
//datasetMM.setDomainIsPointsInTime(true);
datasetIF.setDomainIsPointsInTime(true);
//datasetIF.setDomainIsPointsInTime(true);
datasetWP.setDomainIsPointsInTime(true);
//datasetWP.setDomainIsPointsInTime(true);
JFreeChart summary = buildChart( dataset, "Figures Summary Chart", true );
JFreeChart Physical = buildChart( datasetPhysicalVouchers, "Physical Vouchers count", false );
JFreeChart S = buildChart( datasetSTK, "S count", false );
JFreeChart MM = buildChart( datasetMM, "MM count", true );
JFreeChart IF = buildChart( datasetIFS, "IF (count & values)", false );
JFreeChart WP = buildChart( datasetWebPortal, "WP count", true );
// Create this panel
this.setLayout( new GridLayout( 2, 2 ) );
this.add( new ChartPanel( summary ) );
this.add( new ChartPanel( Physical ) );
this.add( new ChartPanel( S ) );
this.add( new ChartPanel( MM ) );
this.add( new ChartPanel( IF ) );
this.add( new ChartPanel( WP ) );
}
catch( Exception e )
{
e.printStackTrace();
} }
private JFreeChart buildChart( TimeSeriesCollection dataset, String title, boolean endPoints )
{
// Create the chart
JFreeChart chart = ChartFactory.createTimeSeriesChart(
title,
"Date", "Totals",
dataset,
true,
true,
false
);
// Setup the appearance of the chart
chart.setBackgroundPaint(Color.white);
XYPlot plot = (XYPlot) chart.getXYPlot();
plot.setBackgroundPaint(Color.lightGray);
plot.setDomainGridlinePaint(Color.white);
plot.setRangeGridlinePaint(Color.white);
plot.setAxisOffset(new RectangleInsets(5.0, 5.0, 5.0, 5.0));
plot.setDomainCrosshairVisible(true);
plot.setRangeCrosshairVisible(true);
// Display data points or just the lines?
if( endPoints )
{
XYItemRenderer renderer = plot.getRenderer();
if (renderer instanceof StandardXYItemRenderer) {
StandardXYItemRenderer rr = (StandardXYItemRenderer) renderer;
rr.setBaseShapesVisible(true);
rr.setBaseShapesFilled(true);
rr.setDrawSeriesLineAsPath(true);
rr.setSeriesPaint(0, Color.blue.brighter());
rr.setSeriesVisible(0, true); // default
rr.setSeriesVisibleInLegend(0, true); // default
}
}
// Tell the chart how we would like dates to read
DateAxis axis = (DateAxis) plot.getDomainAxis();
axis.setDateFormatOverride(new SimpleDateFormat("dd-MMM-yy"));
// creating SVG
File svgFile = new File("file.svg");
Rectangle2D r2d = new Rectangle2D.Double (
100.0,
100.0,
30.0,
200.0
);
// write it to file
try {
exportChartAsSVG(chart, r2d.getBounds(), svgFile);
// TODO: notify the user the file has been saved (e.g. status bar)
System.out.println("Figured saved as " + svgFile.getAbsolutePath());
} catch (IOException e) {
System.err.println("Error saving file:\n" + e.getMessage());
}
return chart;
}
void exportChartAsSVG(JFreeChart chart, Rectangle bounds, File svgFile) throws IOException {
// Get a DOMImplementation and create an XML document
DOMImplementation domImpl =
GenericDOMImplementation.getDOMImplementation();
Document document = domImpl.createDocument(null, "svg", null);
// Create an instance of the SVG Generator
SVGGraphics2D svgGenerator = new SVGGraphics2D(document);
// draw the chart in the SVG generator
chart.draw(svgGenerator, bounds);
// Write svg file
OutputStream outputStream = new FileOutputStream(svgFile);
Writer out = new OutputStreamWriter(outputStream, "UTF-8");
svgGenerator.stream(out, true /* use css */);
outputStream.flush();
outputStream.close();
}
// Main method
public static void main( String[] args )
{
StockHistoryChart shc = new StockHistoryChart("file.csv");
JFrame frame = new JFrame(shc.CurrentMonth());
frame.getContentPane().add( shc, BorderLayout.CENTER );
frame.setSize( 640, 480 );
frame.setVisible( true );
frame.setDefaultCloseOperation( JFrame.EXIT_ON_CLOSE );
}
}
I resolved this problem I was facing (not able to create a SVG file with all charts), by removing the exportChartAsSVG() and calling the SVG Generator from the main function like so;