JfreeChart折线图
截图
package
com.tq365.chart;
import
java.awt.Color;
import
java.awt.Dimension;
import
java.io.IOException;
import
java.io.PrintWriter;
import
java.text.SimpleDateFormat;
import
javax.servlet.http.HttpSession;
import
javax.swing.JPanel;
import
org.jfree.chart.
*
;
import
org.jfree.chart.axis.DateAxis;
import
org.jfree.chart.entity.StandardEntityCollection;
import
org.jfree.chart.plot.XYPlot;
import
org.jfree.chart.renderer.xy.XYLineAndShapeRenderer;
import
org.jfree.chart.servlet.ServletUtilities;
import
org.jfree.data.time.
*
;
import
org.jfree.data.xy.XYDataset;
import
org.jfree.ui.
*
;
public
class
TimeSeriesDemo
extends
ApplicationFrame {
private
static
final
long
serialVersionUID
=
-
4172191391806537567L
;
public
TimeSeriesDemo(String s) {
super
(s);
XYDataset xydataset
=
createDataset();
JFreeChart jfreechart
=
createChart(xydataset);
ChartPanel chartpanel
=
new
ChartPanel(jfreechart,
false
);
chartpanel.setPreferredSize(
new
Dimension(
500
,
270
));
chartpanel.setMouseZoomable(
true
,
false
);
setContentPane(chartpanel);
}
private
static
JFreeChart createChart(XYDataset xydataset) {
JFreeChart jfreechart
=
ChartFactory.createTimeSeriesChart(
"
Legal & General Unit Trust Prices
"
,
"
Date
"
,
"
Price Per Unit
"
,
xydataset,
true
,
true
,
true
);
jfreechart.setBackgroundPaint(Color.white);
XYPlot xyplot
=
(XYPlot) jfreechart.getPlot();
xyplot.setBackgroundPaint(Color.lightGray);
xyplot.setDomainGridlinePaint(Color.white);
xyplot.setRangeGridlinePaint(Color.white);
xyplot.setAxisOffset(
new
RectangleInsets(5D, 5D, 5D, 5D));
xyplot.setDomainCrosshairVisible(
true
);
xyplot.setRangeCrosshairVisible(
true
);
org.jfree.chart.renderer.xy.XYItemRenderer xyitemrenderer
=
xyplot
.getRenderer();
if
(xyitemrenderer
instanceof
XYLineAndShapeRenderer) {
XYLineAndShapeRenderer xylineandshaperenderer
=
(XYLineAndShapeRenderer) xyitemrenderer;
xylineandshaperenderer.setBaseShapesVisible(
true
);
xylineandshaperenderer.setBaseShapesFilled(
true
);
}
DateAxis dateaxis
=
(DateAxis) xyplot.getDomainAxis();
dateaxis.setDateFormatOverride(
new
SimpleDateFormat(
"
MMM-yyyy
"
));
return
jfreechart;
}
private
static
XYDataset createDataset() {
TimeSeries timeseries
=
new
TimeSeries(
"
L&G European Index Trust
"
,
org.jfree.data.time.Month.
class
);
timeseries.add(
new
Month(
2
,
2001
),
181.80000000000001D
);
timeseries.add(
new
Month(
3
,
2001
),
167.30000000000001D
);
timeseries.add(
new
Month(
4
,
2001
),
153.80000000000001D
);
timeseries.add(
new
Month(
5
,
2001
),
167.59999999999999D
);
timeseries.add(
new
Month(
6
,
2001
),
158.80000000000001D
);
timeseries.add(
new
Month(
7
,
2001
),
148.30000000000001D
);
timeseries.add(
new
Month(
8
,
2001
),
153.90000000000001D
);
timeseries.add(
new
Month(
9
,
2001
),
142.69999999999999D
);
timeseries.add(
new
Month(
10
,
2001
),
123.2D
);
timeseries.add(
new
Month(
11
,
2001
),
131.80000000000001D
);
timeseries.add(
new
Month(
12
,
2001
),
139.59999999999999D
);
timeseries.add(
new
Month(
1
,
2002
),
142.90000000000001D
);
timeseries.add(
new
Month(
2
,
2002
),
138.69999999999999D
);
timeseries.add(
new
Month(
3
,
2002
),
137.30000000000001D
);
timeseries.add(
new
Month(
4
,
2002
),
143.90000000000001D
);
timeseries.add(
new
Month(
5
,
2002
),
139.80000000000001D
);
timeseries.add(
new
Month(
6
,
2002
), 137D);
timeseries.add(
new
Month(
7
,
2002
),
132.80000000000001D
);
TimeSeries timeseries1
=
new
TimeSeries(
"
L&G UK Index Trust
"
,
org.jfree.data.time.Month.
class
);
timeseries1.add(
new
Month(
2
,
2001
),
129.59999999999999D
);
timeseries1.add(
new
Month(
3
,
2001
),
123.2D
);
timeseries1.add(
new
Month(
4
,
2001
),
117.2D
);
timeseries1.add(
new
Month(
5
,
2001
),
124.09999999999999D
);
timeseries1.add(
new
Month(
6
,
2001
),
122.59999999999999D
);
timeseries1.add(
new
Month(
7
,
2001
),
119.2D
);
timeseries1.add(
new
Month(
8
,
2001
),
116.5D
);
timeseries1.add(
new
Month(
9
,
2001
),
112.7D
);
timeseries1.add(
new
Month(
10
,
2001
),
101.5D
);
timeseries1.add(
new
Month(
11
,
2001
),
106.09999999999999D
);
timeseries1.add(
new
Month(
12
,
2001
),
110.3D
);
timeseries1.add(
new
Month(
1
,
2002
),
111.7D
);
timeseries1.add(
new
Month(
2
,
2002
), 111D);
timeseries1.add(
new
Month(
3
,
2002
),
109.59999999999999D
);
timeseries1.add(
new
Month(
4
,
2002
),
113.2D
);
timeseries1.add(
new
Month(
5
,
2002
),
111.59999999999999D
);
timeseries1.add(
new
Month(
6
,
2002
),
108.8D
);
timeseries1.add(
new
Month(
7
,
2002
),
101.59999999999999D
);
TimeSeriesCollection timeseriescollection
=
new
TimeSeriesCollection();
timeseriescollection.addSeries(timeseries);
timeseriescollection.addSeries(timeseries1);
return
timeseriescollection;
}
public
static
JPanel createDemoPanel() {
JFreeChart jfreechart
=
createChart(createDataset());
return
new
ChartPanel(jfreechart);
}
//
根据JFreeChart对象生成对应的图片
public
static
String generateLineChart(HttpSession session, PrintWriter pw) {
String filename
=
null
;
JFreeChart chart
=
createChart(createDataset());
//
chart.setBackgroundPaint(java.awt.Color.white);
ChartRenderingInfo info
=
new
ChartRenderingInfo(
new
StandardEntityCollection());
try
{
filename
=
ServletUtilities.saveChartAsPNG(chart,
500
,
350
, info,
session);
}
catch
(IOException e) {
e.printStackTrace();
}
try
{
ChartUtilities.writeImageMap(pw, filename, info,
false
);
}
catch
(IOException e) {
e.printStackTrace();
}
pw.flush();
return
filename;
}
public
static
void
main(String args[]) {
TimeSeriesDemo timeseriesdemo1
=
new
TimeSeriesDemo(
"
Time Series Demo 1
"
);
timeseriesdemo1.pack();
RefineryUtilities.centerFrameOnScreen(timeseriesdemo1);
timeseriesdemo1.setVisible(
true
);
}
}