Re: [udig-dev] udig with java7 and ecw+mrsid support?

["Christina Bornträger" <sirilein@xxxxxxxxx>]

Hallo @all,

first, now the success-message - I have a running jre7 with ecw support.

now i will decribe the steps to reproduce the result:

System was win7-64bit, but jre will be 32bit, because of missing gdal for 64bit.

1. I dowloaded a jre7 ( in my case it was jre-7u45-windows-i586.tar.gz9 from http://www.oracle.com/technetwork/java/javase/downloads/jre7-downloads-1880261.html)
2. I downloaded java image io from http://download.java.net/media/jai-imageio/builds/release/1.1/ I took jai_imageio-1_1-lib-windows-i586-jre.exe
3. I downloaded java advanced imaging from http://download.java.net/media/jai/builds/release/1_1_3/ I took  jai-1_1_3-lib-windows-i586-jre.exe   

4. Now I unzipped jre into a seperate folder. Afterwards I extracted imageio and jai into seperate folderas an copied all dll files into the jre/bin and jar files into jre/lib/ext.


5. because we wanted to have gdal and ecw support I downloaded  gdal 1.7 from http://demo.geo-solutions.it/share/github/imageio-ext/releases/1.1.X/1.1.5/native/gdal/windows and extracted all files into jre/bin

Finally the result was, that uDig was able to start up with jre7. When I tried to load an *.ecw file via new layer->file the file list showed up ecw files as supported files. But after selecting one to load, nothing happened. The dialog was already open, no progress, very short display of message "check available services" ... After many hours of searching we figured out, that in the original jre there are 3 (important) dll-files missing: NCScnet.dll, NCSEcw.dll and NCSUtil.dll
After copying them from the jre6 shipped with udig - the ecw files will be loaded in a new layer.

I guess that this files are from erdas software and have to be present when opening ecw files.

We tried also to use gdal1.9 from http://demo.geo-solutions.it/share/github/imageio-ext/releases/1.1.X/1.1.7/native/gdal/ but got the same result as before adding the dlls. I think they have to be added in the correct version to gdal 1.9.

Any additional hints where to get this files?

christina

Am 23.10.2013 09:08, schrieb Frank Gasdorf:

Christina,

you've reported on an other channel that you've created a JRE with ECW support successfully (I assume 32bit). It would be great if you could share your experiences since some of the Confluence wiki pages are not up-to-date (http://udig.refractions.net/confluence/display/ADMIN) anymore. And the uDIG Team has similar tasks to do for transition to LocationTech.org.

My read was, that you could select ecw files but they weren't displayed in the MapEditor. 

* Are the files listed in the catalog view?

* Do you have any errors/exceptions in the log file?

* Could you access the files with gdalinfo from your JRE home?

* Is the environment set up correctly (GDAL_DATA set to the correct data directory for the gdal version 1.7.x?

Cheers, 

Frank

2013/10/22 Jody Garnett <jody.garnett@xxxxxxxxx>

ECW support depends on having the correct C++ libraries compiled and available on the library path. There is also an environmental variable that GDAL checks for "gdal data" used for accurate transformations.

Your best course of action is to check out the imageio-ext project (where we get our raster and ECW support from). uDig makes use of the ECW library using a "desktop license", but it is still a bother to get a copy of the library and compile.

My notes from packaging a JRE are on the wiki, but I do not seem to be able to get into it right now. I have no problem with the project upgrading to use JRE7 but have not taken the time to do this myself.

-- 
Jody Garnett

On 22 October 2013 at 4:01:08 PM, Christina Bornträger (sirilein@xxxxxxxxx) wrote:

The setup we tried is eclipse juno 4.2 with udig 1.4. Udig is loading 
with java7 jre, but under the supported files there are no ecw files 
available. 

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