jpeg « Development « JFreeChart Q&A

1. saving as JPEG    jfree.org

i want to save my chart as a JPEG file.I use the next method: saveChartAsJPEG(File f,JFreeChart j,int a,int b); but ... i got an error as ... cannot resolve symbol: variable f in class X at line 57, column 19 must i create this file first? where must i create it? or should i import this file from other place...? Please ...

2. JFreeChart to gif or jpeg file?    jfree.org

Here is a class I added to the JRefinery jar file to save a file to JPEG: package com.jrefinery.chart.image; import java.awt.*; import java.awt.geom.*; import java.awt.image.*; import java.io.*; import com.jrefinery.chart.*; import com.sun.image.codec.jpeg.*; public class JPEG { public static void saveToFile(JFreeChart chart, String aFileName, int width, int height, double quality) throws FileNotFoundException, IOException { BufferedImage img = draw( chart, width, height ); FileOutputStream ...

3. Force download of JPEG    jfree.org

Hi, My servlet creates a JFreeChart with the writeChartAsJPEG function. The chart itself is created properly. I would like to allow the user to open or save the file via a dialog box, but IE recognises the file type and displays the chart in the browser. I have been searching the Internet for ages now and haven't found a solution to ...

4. Problem writing chart as JPEG    jfree.org

Hi all, I'm using ChartUtilities.writeChartAsJPEG(...) in a servlet to write the chart to the response's output stream. Before today, I was using a quite old version of JFreeChart, 1.0.0-rc1. Charts were displayed fine on my web pages. Today I just switched to 1.0.9, and charts suddenly were not displayed anymore (using both firefox and IE). Switched to PNG and that works ...

5. print out jfreechart as *.jpeg    jfree.org

6. Saving Chart as JPEG or PNG Bug ??    jfree.org

Hi, I have created a swing program with JFreeChart that allows a user to optionally save a graph. I call the writeJPEG() or writePNG() functions and I receive notification that they have finished writing the graph. Sometimes when I open the image file (possibly too shortly after obtaining the message), there is no image shown. However, in the thumbnail view there ...

7. Can we save several charts to one jpeg file?    jfree.org