OK, on the most general level, here's what I need to do: >From a servlet, create a graph (i.e. a bar chart/histogram, possibly with some lines drawn over it), and then save it to a file in some image/graphics format (e.g. gif, jpeg), so I can include it in an IMG tag in an HTML file (likely dynamicaly generated, but I don't think that matters). FYI, the web server/servlet engine is running on an AIX machine. There is an example of something like this in Java Servlet Programming. It uses a third party commercial package (VE's BarChart) to create the graph and then Acme's GifEncoder class to create the gif image, which is then sent to the browser. I assume it would not be difficult to change this so that it writes it to a file instead (e.g. use a FileOutputStream instead of a ServletOutputStream). One complication of this approach is that you need to be running an X server (or something like Xvfb). This may turn out to be a problem for my usage. From what I've read, there doesn't appear to to be any way to use this kind of solution without having an X server or Xvfb -- anyone know otherwise? Also, it is unclear whether I'll be able to draw lines on top of a bar chart -- this probably depends on the capabilities of the charting package. Another solution I can envision is having a Java API to some graphics library/package (e.g. gd at http://www.boutell.com/) that can handle drawing graphs and lines and creating the gif/jpeg (gd actually does the latter but not the former). I haven't been able to find such a beast though -- anyone know of one? And possibly there are some other solutions that I haven't thought of. To make things a little more complicated :-), I'd like to find a solution that is low-cost, hopefully free -- one thing that helps there is that this is for non-commercial/educational use. Thanks very much for any help/suggestions. Milt Epstein Research Programmer Software/Systems Development Group Computing and Communications Services Office (CCSO) University of Illinois at Urbana-Champaign (UIUC) [EMAIL PROTECTED] ___________________________________________________________________________ To unsubscribe, send email to [EMAIL PROTECTED] and include in the body of the message "signoff SERVLET-INTEREST". Archives: http://archives.java.sun.com/archives/servlet-interest.html Resources: http://java.sun.com/products/servlet/external-resources.html LISTSERV Help: http://www.lsoft.com/manuals/user/user.html
