On Thu, Aug 11, 2011 at 10:23 PM, Scott Ellis <sel...@ittvis.com> wrote: > Hi and thanks again for your response. > > I have tried various SLD's to no avail. The problem occurs with the standard > "raster" SLD that comes with GeoServer. > > In a separate email to your personal account, I have sent the GeoTIFF data > file that reproduces the problem. It is about 4 MB so I hope it goes through. > Please let me know if you do not receive it. When you do, thanks so much for > loading it into GeoServer and taking a look at the behavior.
I did receive it and know why the image is not being displayed properly. The source image has this structure: Band 1 Block=1024x1 Type=UInt16, ColorInterp=Red Band 2 Block=1024x1 Type=UInt16, ColorInterp=Green Band 3 Block=1024x1 Type=UInt16, ColorInterp=Blue Band 4 Block=1024x1 Type=UInt16, ColorInterp=Alpha That is, RGBA, but 16 bits per pixel. Before encoding to JPEG we have to reduce it to RGB 8 bits per pixel, that is done computing a dynamic stretching that involves only the pixels in the current area. As already said, it's not possible to use the entire image, especially because the encoding portion only sees the portion of the original image to be encoded (eventually rescaled, band-selected, reprojected and so on). I'm not sure if it's possible to do anything about this particular case with just SLD, your best bet is likely to find some software that can turn it into a RGBA 8 bit. I've tried quickly with gdal_translate but with little success, the translated image becomes very very light, almost white in most parts. Cheers Andrea -- ------------------------------------------------------- Ing. Andrea Aime GeoSolutions S.A.S. Tech lead Via Poggio alle Viti 1187 55054 Massarosa (LU) Italy phone: +39 0584 962313 fax: +39 0584 962313 http://www.geo-solutions.it http://geo-solutions.blogspot.com/ http://www.youtube.com/user/GeoSolutionsIT http://www.linkedin.com/in/andreaaime http://twitter.com/geowolf ------------------------------------------------------- ------------------------------------------------------------------------------ Get a FREE DOWNLOAD! and learn more about uberSVN rich system, user administration capabilities and model configuration. Take the hassle out of deploying and managing Subversion and the tools developers use with it. http://p.sf.net/sfu/wandisco-dev2dev _______________________________________________ Geoserver-users mailing list Geoserver-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/geoserver-users
