[Mapserver-users] output to 1band 16 bit geotiff?

[Vincent Schut]

Frank,

actually this would solve my problem, as I currently use mapserver as a tool 
to rasterize vector layers, not for web output. 
It would be good to have the red code part put into the 1band file. It would 
be even better if this number can be greater than 255, ad official codes for 
my vector classes can be in the range 0-9000...

Could you modify the code to have the value of the red color component into 
16bit output? I would very much appreciate that.

Thanks,
Vincent.


On Monday 23 June 2003 15:57, Frank Warmerdam wrote:
> Vincent Schut wrote:
> > Frank & others,
> >
> > sorry for my apparently confusing story.
> > I don't need indexed 16bit images.
> > I simply want to specify the value the pixel gets in mapserver&gdal 16bit
> > geotiff output. In mapserver, afaik the only way to specify the output
> > value of a pixel is 'color r g b'. However, you can specify 16bit output
> > using gdal in the outputformat tag. But if I specify 16bit output, I
> > always get a 0-filled geotiff... I'd like to be able to specify the
> > 'color' (but with values > 255) of my 16bit output file. I mean, why have
> > 16-bit ouput if you cannot specify output values > 255?
>
> Vincent,
>
> This is an ommission in the code.  I can modify the code in msImageCreate()
> (maputil.c) to initial INT16 and FLOAT32 rasters from the red component of
> the background color if you would like.  As it happens, it looks like the
> colorObj values are all 'int' which gives us some flexibility.
>
> However, I think this does not solve your basic problem.  The special INT16
> and FLOAT32 modes are not intended to work with vector drawing at all. They
> are just for special applications where MapServer is used for delivering
> raster file data of DEMs, not for general mapserving.
>
> Best regards,

-- 
______________________________________
Vincent Schut
Sarvision B.V.
Wageningen, The Netherlands
www.sarvision.com