Dear All,
I am reading an input from a WCS (a DEM served in output format GeoTiff,
the server is Deegree). From the WCS response I construct a
GridCoverage2D as follows:
(removed all error handling etc):
BufferedImage image = image = ImageIO.read(url);
WritableRaster inputRaster =
Hi Martin,
I can't help at all with the WCS aspect of this question (I know
nothing) but as to converting the coverage you have into a single band
version (as a last resort solution): if you know the details of the
calculation used to create the four bands you can run that in reverse
with a JAI
IMHO this is a deegree related problem, once you go from raw data to a
rendered version is quite hard to go back to the original data, even
knowing the style that was applied.
If you asking a dem you should get numbers from WCS not colors.
Simone.
2009/4/30 Martin Tomko martin.to...@geo.uzh.ch:
I asked for a more exact specification of the transformation. I have
personally NO experience with handling colors in such situations, and I hope
that a solution is possible - we are sort of dependent on the WCS...
Martin
Well it's guaranteed to
Ciao Martin,
please read below...
---
Ing. Simone Giannecchini
GeoSolutions S.A.S.
Owner - Software Engineer
Via Carignoni 51
55041 Camaiore (LU)
Italy
phone: +39 0584983027
fax: +39 0584983027
mob:+39 333 8128928
Dear Simone, Martin,
yes, it is unfortunate - but while I will push for a change of the
server, it is not a solution in the short term (deadlines!). Simone, if
you have a simple code to do the shifting, please, could you share it?
I tried searching for something like that, but I am not confident
Ciao,
michael, Id' take into account that much probably the RGBA data was
created using a colormap like approach, hence band combination won't
do, unfortunately.
I guess that the point is understanding why the data became RGBA at
the WCS stage when the suorce data was a dem.
Of course, this is
Hi Martin,. Simone,
I have asked at the deegree list, and this is the response I got from
Andreas:
quote
this is the way the WCS works. One reason for this is Java or better
ImageIO, JAI and Batik which are used by deegree for handling TIFFs.
According to these libs it is possible to create a
Hi Martin,
on the following link there is some code which allows you to handle 4 bytes
as a float and 8 bytes as a double.
http://pastebin.com/m58d7f133
Regards,
Daniele
On Thu, Apr 30, 2009 at 12:19 PM, Martin Tomko martin.to...@geo.uzh.chwrote:
Dear Simone, Martin,
yes, it is unfortunate
