Ludwig Kniprath wrote:
I dont't think, Mapserver has the out-of-the-box possibility to render the
overlapping parts of polygons in a special way. Perhaps you could try to create
a separate layer (f. e. in Postgis with a special geo-query), that just shows
these overlapping parts. But also then I think its difficult to query and to
render the case, that three or more polygons do overlap.
Ludwig
Hi Ludwig,
out of curiosity:
How do other software packages handle this case?
Are there some best practices? For example dividing the intersection
area into stripes and cycle through the colors of the overlapping data?
Does GeoServer have some way to visualize overlapping data?
Would it make sense to collect some requirements to formulate an RFC?
Regards,
Peter
Message: 2
Date: Mon, 21 Dec 2009 17:22:44 +0100
From: Peter Hopfgartner <[email protected]>
Subject: [mapserver-users] Rendering overlapping data
To: [email protected]
Cc: d'Orio Pietro <[email protected]>
Message-ID: <[email protected]>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Dear list members
We would like to visualize a layer with data, where polygons with
different classes may overlap. Using transparency, "new" colors are
introduced, e.g. if I overlap a blue and a red polygon I get an violet one.
Is there a way to show overlapping polygons in stripes with cycling
colors, or as a checker board? How do people handle this?
Regards,
Peter
--
Dott. Peter Hopfgartner
R3 GIS Srl - GmbH
Via Johann Kravogl-Str. 2
I-39012 Meran/Merano (BZ)
Email: [email protected]
Tel. : +39 0473 494949
Fax : +39 0473 069902
www : http://www.r3-gis.com
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--
Dott. Peter Hopfgartner
R3 GIS Srl - GmbH
Via Johann Kravogl-Str. 2
I-39012 Meran/Merano (BZ)
Email: [email protected]
Tel. : +39 0473 494949
Fax : +39 0473 069902
www : http://www.r3-gis.com
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mapserver-users mailing list
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