Hi list,
I have got some troubles generating legends with MS 5.0.2, used as a
WMS-Server, using agg - driver and generating the legends from a pixmap with
getlegendgraphic-request.
(See the mapfile snippets below !)
First Problem:
==========
Using gd the pixmap referenced by KEYIMAGE is scaled to the size defined by
KEYSIZE.
Using agg the pixmap is NOT scaled. A part of the pixmap is shown as
legend-graphic. This part is not scaled, size is 100% as in the original pixmap.
(My pixmap is larger than the size defined by KEYSIZE)
Second Problem:
============
Scaling the original pixmap DOES NOT really solve the problem, because:
Always only a part of the original pixmap is used for generating the
legend-graphic: it is the part "cr" (center right) of the pixmap. So, if the
original pixmap is scaled, only the "cr"-part is very small drawn in the
legend-graphic.
The size of the part is correct after scaling the original pixmap, but always
only a part of the original pixmap is shown.
Solution ?
=======
I think this is a bug.
But if you know a workaround, please let us know !
Thanks very much
Herbert
Mapfile Snippets:
============
OUTPUTFORMAT
#NAME png
#DRIVER "GD/PNG"
MIMETYPE "image/png"
NAME 'AGG_Q'
DRIVER AGG/PNG
EXTENSION PNG
IMAGEMODE RGBA
TRANSPARENT ON
END
LEGEND
STATUS ON
#KEYSIZE 55 40
KEYSIZE 200 520
KEYSPACING 10 5
LABEL
COLOR 0 0 0
TYPE TRUETYPE
FONT "verdana"
SIZE 8
END # END LABEL
TRANSPARENT ON
IMAGECOLOR 255 255 255
END #LEGEND
....
LAYER ...
CLASS
NAME "Stadtplan farbig"
KEYIMAGE "/data/raster/stadtplan/stadtplan_legende_hoch.png"
END
....
END # LAYER
.....
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