Jody Garnett wrote:
Ivan
Zerlotti wrote:
Can someone give me some direction on
how I can show a individual feature with a color different from the
others in the layer?
Thank you very much
Three ways,
- Draw it again in a different color ;-) That is what we do for
selections in uDig, not sure this is a valid long term approach.
This way is working and this is good enough for now (I need no
interaction with the user).
I'll try to understand the second while the third I think is over my
understanding of the Udig architecture (is there any document or better
any UML diagram describing it with some detail?)
Thank you very much for your kind and quick reply
ivan
-
Or set up an SLD rule that is based on the Feature Attirbute, and
provide a PolygonSymbolizer (or Point or Line) that uses a different
color. This is standards happy and will show up when you use the SLD in
GeoServer.
A thrid option is the one used by the Editing, keep the feature around
(in the map blackboard preferably) and set up a Tool (no end user
control) (or a Map Graphic end user can turn it off) that will draw
your feature. This appoach is taken by the CIP team when they draw
their Grid Bounding Box (you can look at that one in the community
section).
In general I would like to move towards all "Tools" & "Plugin"
storing temporary data like this on the MapBlackboard, and asking the
rendering system to draw "Feature" placed on the blackboard (so we all
don't duplicate the same work). It should be noted that when using
custom drawing like this you need to provide your own (non SLD based
rendering system) and should provide a preference page to allow users
to mess w/ the colors.
Jody
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