From: David Corbin [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Subject: MI MapXstreme Java needs an X server?
Date: Fri, 22 Sep 2000 14:03:18 -0400
I'm trying to write a small client that just creates a .GIF file. I'm
using MapJ. Whenever I call toFile() or toImage(), I get an exception
from the MapXtreme Java servlet saying it can't connect to an X Server.
Please don't tell me your software requires that X be installed to work
correctly. That's not a very effiecient server it it does.
This is a limitation brought about by Java 1.2 and how it renders images.
The way that people get around this is by obtaining Xvfb from the X
consortium (http://www.x.org/) and set the DISPLAY variable to point to
that.
To invoke Xvfb, use this command (as root) :
Xvfb :1 -screen 0 1152x900x8
then do this command as the user you start your server under
(assuming you are using a Bourne-type shell):
export DISPLAY=":1.0"
Starting MapXtreme's server or Tomcat (which will start the server for you)
shouldn't have a problem now.
Note: If you are running a flavor of Linux, Xvfb is available as an rpm or
deb package, if you don't want to compile it from source. It is usually
included in a standard installation of X11R6.4
-Justin Akehurst
TerraGraphics, LLC
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