jfreechart

In my current project, I try to add a BufferedImage to a PDFBox document. More specificly, I use an image from a JFreeChart . My code looks like this: public void exportToPDF(JFreeChart chart, String filePath){ PDDocument doc = null; PDPage page = null; PDXObjectImage ximage = null; try { doc = new PDDocument(); page = new PDPage(); doc.addPage(page); PDPageContentStream content = new PDPageContentStream(doc, page); BufferedImage image = chart.createBufferedImage(300, 300); ximage = new PDJpeg(doc, image); content.drawImage(ximage, 20, 20); content.close(); } catch(IOException ie) { } doc.save

要想绘制出漂亮的图表，就必须了解图表的构成部分，将图表进行分解成N个部分。 然后再对每一个部分进行渲染，设置样式：包括背景色、轮廓线条样式和颜色、填充颜色、字体大小、样式、颜色。同时，需要确保在整个项目中，图表的样式风格整体统一,统一,和谐才能打造漂亮、干净、专业的外观. 使用JfreeChart创建柱状图,折线图,饼图,堆积柱状图,时间序列图,二维Y轴坐标图. 所有代码和示例项目代码地址: http://www.oschina.net/code/snippet_855019_36505 封装好的美化Jfreechart的工具类 ChartUtils.java 大家可以直接使用. Jfreechart API详解和开发中大家所经常遇到的问题,请参考博客： http://my.oschina.net/abian/blog/278465 Jfreechart 图表属性拆解图: 美化后,Jfreechart图形效果展示: 柱状图界面: 代码:这是我封装的工具类,然后绘制图表就非常简单了,而且美观专业! package util; import java.awt.BasicStroke; import java.awt.Color; import java.awt.Font; import java.awt.Paint; import java.awt.Rectangle; import

I have 3 series: XYSeries s1 = new XYSeries("one"); s1.add(1,0); s1.add(2,1); XYSeries s2 = new XYSeries("two"); s1.add(3,0); s1.add(4,1); XYSeries s3 = new XYSeries("three"); s1.add(5,0); s1.add(6,1); Which i plot as a XYLineChart: XYSeriesCollection dataset = new XYSeriesCollection(); dataset.addSeries(s1); dataset.addSeries(s2); dataset.addSeries(s3); JFreeChart chart = ChartFactory.createXYLineChart("title", "x", "y", dataset, PlotOrientation.VERTICAL, false, false, false); and add to a panel: ChartPanel cp = new ChartPanel(chart); panel_1.add(cp, BorderLayout.CENTER); panel_1.validate();

I want to draw a graph on each point of which there will be a button. When I will click the button, it will do something. Here's a link ; I want my graph to look like this. Can anybody suggest me how to do it? trashgod Using JFreeChart , add a ChartMouseListener to your ChartPanel , as outlined here . In your implementation of chartMouseClicked() invoke Desktop#browse() , as illustrated here . In outline, chartPanel.addChartMouseListener(new ChartMouseListener() { public void chartMouseClicked(ChartMouseEvent e) { // construct a URI based the result from e.getEntity() desktop.browse(uri); }

I have a dataset with 3 column, x, y, and value at (x,y). I want to plot map similar to bellow map. How to plot this type of figure in jfreechart or any library available for this kind of plot? Catalina Island An XYBlockRenderer looks like a good match. You can use Color.getHSBColor() , like they show here , to make the PaintScale . image trashgod Starting with this example and using this idea , you can use a SpectrumPaintScale to get a palette of colors as shown below. import java.awt.Color; import java.awt.Dimension; import java.awt.EventQueue; import java.awt.Paint; import javax.swing

I have a parabola plot, coefficients of parabola equation are stored in array a . In mouseDragged (mousemotionlistener), coefficients of parabola were changed and I want to update a parabola plot with new coefficients in realtime. How can I make this happen? public class ParabolaDemo extends ApplicationFrame { int flag = 0; double px = 0.0, py = 0.0, chartpx = 0.0, chartpy = 0.0, chartX = 0.0, chartY = 0.0; int windowheight = 270; ChartPanel chartPanel; PolynomialFunction2D p; double lrange = -20.0; double rrange = 20.0; double[] a; public ParabolaDemo(final String title) { super(title);

Basically, I want a Java GUI with multiple frames, so I'm using JInternalFrame , but when I add my chart (created from JFreeChart ) to one of the frames, it gave me an exception. Exception in thread "AWT-EventQueue-0" java.lang.ClassCastException: javax.swing.plaf.ColorUIResource cannot be cast to java.util.List at javax.swing.plaf.metal.MetalUtils.drawGradient(Unknown Source) at javax.swing.plaf.metal.MetalInternalFrameTitlePane.paintComponent(Unknown Source) at javax.swing.JComponent.paint(Unknown Source) at javax.swing.JComponent.paintToOffscreen(Unknown Source) at javax.swing

I'm trying to create simple XYSplineRenderer, but code only work if I write XYDotRenderer a = new XYDotRenderer(); or XYLineAndShapeRenderer a = new XYLineAndShapeRenderer(); Can sameone tell what i do wrong? I'm just beginner in programming. Here is my code: package kubas; import org.jfree.chart.*; import org.jfree.chart.axis.*; import org.jfree.chart.plot.*; import org.jfree.chart.renderer.xy.XYSplineRenderer; import org.jfree.data.xy.*; import org.jfree.ui.ApplicationFrame; public class spausdink { public static void main(String[] args) { XYSeries series = new XYSeries("XY grafikas");