[Mapserver-users] Raster geotiff turns background yellow - FIX

[randy james]

Hi List

An update on my problem:

I just discovered that if i use the transparency
option i can load geotiff rasters UNDER all the vector
layers without making all the vectors turn gray.

Even if the transparency = 100

Before i discovered this i had to load the geotiff
layer on top of all the layers otherwise the vectors
changed their color to gray.


Not sure why it makes a differance but at least it
works

Cheers
Randy

--- Dylan Keon <keon at nacse.org> wrote:
> Randy, what versions of GD and GDAL are you using? 
> I believe there are 
> issues with vector layers and the use of GD < 2.0.11
> with MS 3.7.  Since 
> you're using MS 3.7 you should probably also be
> using GD 2.0.11 and GDAL 
> 1.1.8.
> 
> Yes, both tiled and single raster layers can be made
> transparent.  There 
> are also new ways to handle transparency and image
> output in 3.7, via 
> use of the OUTPUTFORMAT object.  Take a look at 
>
http://mapserver.gis.umn.edu/cgi-bin/wiki.pl?MigrationGuide
> for more info.
> 
> 
> 
> randy james wrote:
> > Hi
> > 
> > To answer my own question: Rasters can be made
> > transparent using the TRANSPARENCY (0-100) tag.
> > 
> > I have tried with a raster layer loaded through
> > tileindex, but not with loading a raster the
> normal
> > way yet.
> > 
> > But i would hope that at some point i will be able
> to
> > load the orthophotos under the vectors without
> been
> > transparent, rather than on top of the vectors and
> > transparent.
> > 
> > 
> > --- randy james <rjames57 at yahoo.com> wrote:
> > 
> >>Hi
> >>
> >>Upgrading to 3.7 solved the problem of the tiff
> >>image
> >>turning the background yellow, but caused another
> >>problem:
> >>
> >>Any vector layer that is loaded on top if the tiff
> >>image now turns gray. When i load the vectors
> after
> >>the tiff nothing changes color at least, but i
> >>cannot
> >>see the vector layers.
> >>
> >>Can Raster layers be transparent?
> >>
> >>Cheers 
> >>Randy
> >>
> >>
> >>--- Frank Warmerdam <warmerdam at pobox.com> wrote:
> >>
> >>>randy james wrote:
> >>>
> >>>>Hi
> >>>>--- Ed McNierney <ed at topozone.com> wrote:
> >>>>
> >>>>
> >>>>>Randy -
> >>>>>
> >>>>>Can you describe exactly what you did
> >>>>
> >>differently
> >>
> >>>>>between those two images?
> >>>>>
> >>>>
> >>>>Well the difference is: 
> >>>>the tif that does not work has: a 256 RGB,
> >>>>colorinterp=palette, is projected on the fly,
> >>>
> >>and
> >>
> >>>is a
> >>>
> >>>>newer version of an orthophoto.
> >>>>I have used tiff2bw and gdal_translate to make
> >>>
> >>it
> >>
> >>>>grayscale, so i have a few versions of the file
> >>>
> >>>(5),
> >>>
> >>>>and all make the same error.
> >>>
> >>>Randy,
> >>>
> >>>I haven't been following this issue closely, but
> >>
> >>if
> >>
> >>>the problem occurs in
> >>>3.7 and if you can prepare a small test case that
> >>>demonstrates the problem
> >>>just using "shp2img" then please file it in
> >>
> >>bugzilla
> >>
> >>>(attaching the small
> >>>sample map file and data file(s)) and assign to
> >>
> >>me.
> >>
> >>>Best regards,
> >>>
> >>>-- 
> >>>
> >>
> >
>
---------------------------------------+--------------------------------------
> > 
> >>>I set the clouds in motion - turn up   | Frank
> >>>Warmerdam, warmerdam at pobox.com
> >>>light and sound - activate the windows |
> >>>http://pobox.com/~warmerdam
> >>>and watch the world go round - Rush    |
> >>
> >>Geospatial
> >>
> >>>Programmer for Rent
> >>>
> >>>
> >>
> >>
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> >>
> > 
> >
>
http://lists.gis.umn.edu/mailman/listinfo/mapserver-users
> > 
> > 
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> -- 
> ************************************************
>   Dylan Keon
>   GIS/Database Research Specialist
>   Northwest Alliance for Computational
>   Science and Engineering (NACSE)
>   Oregon State University
>   Corvallis, OR 97331
>   keon at nacse.org        (541) 737-6608
> ************************************************
> 
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