[mapguide-users] Transparent Rasters in Mapguide Enterprise 2010

[Johann Nothbauer]

After some struggles I made it work.
Here's how it works for me (Mapguide Enterprise 2010):
1) Make sure the Geotiff's have Nodata values
2) Convert the GeoTiff' to RGBA Png's (and produce a world file)
3) Use the gdal provider (fdo 3.4) to show the files in mapguide

I used FME for all the conversion.

Nothi

2009/7/2 Mark Nichols <markn at spicergroup.com>

> Yes, last week I had problems with bi-tonal TIFF’s.  I had a reply from a
> member of the list instructing me to use Irfanview and convert the TIFF’s
> the PNG’s.  It took a little work but yes, it did work.  I do now have
> transparent images in MapGuide.  There were a few steps in Irfanview that
> I’m not remembering.  If you have problems, repost and I’ll try to step
> through the process again.
>
> Mark
> markn at spicergroup.com
>
>
>
>
> On 7/2/09 1:51 PM, "Andy Morsell" <amorsell at spatialgis.com> wrote:
>
>   It seems that the GDAL provider deals with transparency differently for
> different image formats.  Others have mentioned this on this board as well.
> There was a post in the last week or so about this and they solved it by
> converting their imagery to transparent PNG’s.  Search the group for
> “transparency” or “transparent” and see what you come up with.
>
> Andy Morsell, P.E.
> Spatial Integrators, Inc.
> 47° 46' N 116° 49' W
> www.SpatialGIS.com <http://www.spatialgis.com/>
>
>
> *From:* mapguide-users-bounces at lists.osgeo.org [
> mailto:mapguide-users-bounces at lists.osgeo.org]<mapguide-users-bounces at lists.osgeo.org]>
> *On Behalf Of *Johann Nothbauer
> *Sent:* Thursday, July 02, 2009 10:31 AM
> *To:* mapguide-users at lists.osgeo.org
> *Subject:* [mapguide-users] Transparent Rasters in Mapguide Enterprise
> 2010
>
> Hi all!
>
> I'm trying to set up a map that contains GeoTIFF Images. Those images are
> the result of a re-projection from WGS84 to some projected system. That's
> why they have some "Nodata" strips on the edges (color info is paletted).
>
> Unfortunately MapGuide seems to ignore the NoData values, so there are
> overlaps between the images.
>
> Has anyone solved a similar problem?
>
> Any help appreciated,
>
> nothi
>
>
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