Search found 565 matches
- Sun Jun 29, 2008 11:40 am
- Forum: JFreeChart
- Topic: JFreeChart print job size.
- Replies: 8
- Views: 8027
The spool-file size is dependent on many factors: (1) Your printer: Bitmap printer (Ink-Jet) or Vector printer (Laser printer; PCL and Postscript) (2) Your printer driver (3) Your JDK When printing in Java, the JDK tries to map all Graphics2D operations directly into native rendering operations (vec...
- Thu Jun 26, 2008 12:21 pm
- Forum: JFreeChart
- Topic: Dynamic Charts and EDT
- Replies: 1
- Views: 2180
- Mon Jun 16, 2008 11:54 am
- Forum: JFreeChart
- Topic: Trying to capture tooltip rendering
- Replies: 2
- Views: 2991
Unless you are willing to generate a stacktrace and analyze that, you wont get any hint on who triggered the repaint. (And even that method is not safe to work, as paint events can be postponed by the rendering queue). What you could do is to avoid the repeated rendering by buffering the chart. (The...
- Mon Jun 16, 2008 11:44 am
- Forum: JFreeChart
- Topic: Multithreading support for JFreeChart
- Replies: 9
- Views: 9851
I think adding synchronization to the chart-datasets and the chart rendering system is not a good idea. (1) Synchronization is expensive. Whenever you access a lock you have a potential context switch, so your code will be slower without any real gain so far. If you implement fine grained locks, the...
- Mon Jun 09, 2008 2:08 pm
- Forum: Eastwood Chart Servlet
- Topic: Eastwood rewriting
- Replies: 18
- Views: 158090
This forum does not allow uploads (you know, the evil spammers would make our life a hell and lawyers rich and happy).
Any patches should always be posted at
http://sourceforge.net/tracker/?group_i ... tid=315494
(preferrably with a notification here, to increase the visibility of the patch)
Any patches should always be posted at
http://sourceforge.net/tracker/?group_i ... tid=315494
(preferrably with a notification here, to increase the visibility of the patch)
- Fri Jun 06, 2008 10:22 am
- Forum: JFreeChart
- Topic: Help Needed Urgently : Reporting MS Excel Charts
- Replies: 1
- Views: 2433
No, JFreeChart would not be able to help you here. In the Java-World, there is currently no open-source way to define charts in Excel (due to the weird and totally undocumented* nature of the fileformat). There may be some commercial providers of Excel-export solutions that help you solve this probl...
- Fri May 30, 2008 1:18 pm
- Forum: JFreeChart
- Topic: JFreeChart as plugin Eclipse RCP
- Replies: 2
- Views: 2961
- Fri May 23, 2008 11:58 am
- Forum: JFreeChart
- Topic: Overflow the number of bins !!!
- Replies: 5
- Views: 4123
well, I repeat: DO NOT USE XY-Charts and do not use the out-of-the-box bining. If you look at your data closely, you will notice that you do not access each single address between min and max. I doubt that all 2 billion internet hosts talked to your network service and therefore you are dealing with...
- Thu May 22, 2008 11:35 am
- Forum: JFreeChart
- Topic: Overflow the number of bins !!!
- Replies: 5
- Views: 4123
Dont use a XYChart, use a CategoryChart (Barchart) instead and do your own aggregation before you fire up the chart. I guess you do not receive messages from all 2^32 possible IP-addresses, you might be happy if there are a million or two different addresses show up. (As most IP addresses are part o...
- Sat May 17, 2008 11:18 pm
- Forum: JFreeChart
- Topic: JFreeChart - Server side (Servlet) Style Questions
- Replies: 2
- Views: 3651
The good news: You can do all the things you listed here. The bad news: You have to code it all by yourself. To convert a hex-number into a Color, use Color#decode(..). All colors used in JFreeChart can have an alpha-channel, but again, there is no automatic global property, you have to manually def...
- Sat May 17, 2008 11:10 pm
- Forum: JFreeChart
- Topic: Display JFreeChart inside a panel
- Replies: 17
- Views: 14982
Well, as the name suggests, a ChartPanel is a Swing-Component that displays a chart in a Swing-Component. If you need info on getting a swing-component displayed in an other swing component, then have a look at the Swing-Tutorials at java.sun.com, they give easy tutorials on how to write Swing-Appli...
- Fri May 16, 2008 5:22 pm
- Forum: JFreeChart
- Topic: Display JFreeChart inside a panel
- Replies: 17
- Views: 14982
- Sun May 11, 2008 7:15 pm
- Forum: JFreeChart
- Topic: Clarification regarding ServletUtilities while creating JFre
- Replies: 4
- Views: 5276
More on that: The files that are created are registered to be deleted as soon as the session of the user expires. So assuming that your users don't lurk on the server forever, the files that are generated should be deleted as well. And if your server hits the critical level of concurrent users all g...
- Sun May 11, 2008 7:12 pm
- Forum: JFreeChart
- Topic: Clarification regarding ServletUtilities while creating JFre
- Replies: 4
- Views: 5276
The ServletUtilities class uses "File.createTempFile" to create the file. Therefore it is safe to be used in a multi-user application. The +2 increase you see in each file is just a side effect on how the JDK creates the file. However, the JDK guarantees that the new temporary file is created in a s...
- Sat May 10, 2008 12:28 pm
- Forum: JFreeChart
- Topic: Problem running on Websphere server on Unix platform
- Replies: 13
- Views: 11137
No, but the headless mode must be activated before any of the AWT classes are loaded. When you try to set the property in the same servlet that also uses JFreeChart, then the classes are already loaded (as on loading the servlet, all dependent classes are loaded as well. Servlet references JFreeChar...