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Re: [udig-devel] uDIG current and future issues and requirements 
Hey Shaun,
First of all ECW is not supported, at least not yet. The second problem is occurring because you do not have JAI installed correctly (or uDig is using the wrong JVM). We generally ship a JRE with udig that is configured correctly. Usually if an eclipse RCP has a directory called jre in the same directory as the RCP binary it uses that jre. But I guess something went wrong when it got installed. If you are willing to run the app from the command line you can try: 

udig -vm path_to_java -Xmx386M
this will use the jre you specified and execute udig with 386 MB of heap space. If the jre is configured with both JAI and imageio tifs should be loadable provided they have a world file or are geotiffs. uDig doesn't load non geo-referenced images. Remember that you need at least java 5.
Here's a link to a jre that is supposed to be ready for use (I haven't tried it so I can't vouch for it but it should be good.): 

http://udig.refractions.net/downloads/jre/jre1.5.0_08.win32.zip
Feel free to hop on irc.freenode.net #udig IRC channel for more interactive instructions, 

Jesse

On 4-Feb-07, at 5:11 PM, Shaun Kolomeitz wrote:


Dear uDIG list,
I've been having a test of the uDIG app and trying to get some of ournot supported 
requirements to work, with no luck.
Our requirements are to be able to view "local" data (shapefiles, ECW,
TIF, Imagine) images (on peoples PC's) and view/edit PostGIS data, as
well as use WMS/WFS GeoServer data.

At the moment GeoServer works fine for PostGIS and shape data, but I'm
champing at the bit to see if I can get imagery (ECW) served up, but I
guess that is for another list.

Our clients are WindowsXP machines.

I'm having no problems with shapefiles and PostGIS layers, however I
can't seem to be able to add/use imagery (even TIF).

The error looks straightforward enough -

File can not be read.  Could be a JAI configuration problem or a
corrupted file.  Error recieved was: java.lang.NoClassDefFoundError:
javax/media/jai/JAI

A quick search revealed that indeed the Java Advanced Imaging and Java
Image I/O tools are required, which were installed following the
instructions on the
http://udig.refractions.net/confluence/display/UDIG/Support page. I
started with only a JRE install and ended up with both the JRE and SDK, 
and still nothing worked.

Can someone lead me through this process please ?

Many thanks,
Shaun

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