[mapserver-users] Transparent layers

[randy james]

I used transparency without modifying the source code.

In my map file i entered this in the layer object

 transparency 20

but any number from 0 to 100 works i guess

randy

--- Daniel Morissette <morissette at dmsolutions.ca>
wrote:
> The transparency parameter is supported via PHP
> MapScript for
> getting/setting the value in the layer object (that
> should be enough
> as far as MapScript is concerned), so if it won't
> work for you then it
> must be because of something else.  
> 
> I never used that feature so I don't know if it
> requires anything
> special in your build, or is supported only with
> specific image formats
> (maybe just PNG?).  By looking at the code it seems
> that it should work
> for any GD format.  Note that this transparency is
> applied only between
> layers within the map image and the resulting image
> will still be opaque
> in your browser.
> 
> Hopefully someone who knows more about this new
> transparency feature can
> provide more details.
> 
> Daniel
> 
> 
> Vinko Vrsalovic wrote:
> > 
> > On Fri, Apr 12, 2002 at 10:32:35AM -0500, Steve
> Lime wrote:
> > > It is possible in the development version for
> 3.6. It now supports a
> > > "TRANSPARENCY" parameter
> > > (at the LAYER level) that takes an integer
> argument representing the %
> > > of transparency to use.
> > > 100 is completely opaque, 50 is 50% transparent
> and so on. Color
> > > limitations will definitely affect
> > > the quality of the output. The samples I've seen
> are pretty good
> > > though. For earlier versions you're
> > > limited to hatched fills...
> > 
> > I tried setting the transparency parameter
> (through mapscript) like
> > this:
> > 
> > $layer->set("transparency",90);
> > 
> > and it appears solid.
> > 
> > Version:
> > 
> > [vinko at landsat vinko]#/builds/mapserver/mapserv -v
> > MapServer version 3.7 (development) OUTPUT=PNG
> OUTPUT=JPEG OUTPUT=WBMP
> > SUPPORTS=PROJ SUPPORTS=TTF SUPPORTS=WMS_SERVER
> INPUT=EPPL7 INPUT=GDAL
> > INPUT=SHAPEFILE
> > 
> > I know i should use 3.6-beta, but i'd like to know
> if my method is right
> > before recompiling.
> > 
> > --
> > Vinko Vrsalovic <vinko[@]cprsig.cl>
> > http://www.cprsig.cl
> 


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