Matthias Basler wrote:
The steps I did:
I opened "bc_2m_lakes.shp" (This created a new map with this layer).
My intention was to color the lakes by size, since they obviously should have
such attribute. I selected Attribute "AREA", 8 classes and the last color
profile.
Then I pressed "Create Defaults". The result reads [0...0] for every class. When
I press OK all lakes are dark blue, no matter what area they have.
May I guess that the problem lies in the AREA attribute, not the themer?
Correct... I used the info tool on a few of the features, and all had
area = 0.0, but it should be smarter than that...
Second experiment:
New map, again just one layer: cities.shp (from the walkthrough). OK, I wanted
the cities classified by size, inhabitatants (... or just something).
I selected attribute "pop-rank", 8 classes, "Create Defaults". Now I have actual
values in the "custom" tab! I press "Apply" and the map is ... blank. :-(
The layer doesn't show up. All I can do is use the style editor to create a
simple style to make it appear back.
:)
At the moment it only generates a PolygonSymbolizer, so that needs to be
expanded to handle other geometries like points.
Maybe I asked for something impossible? Then I wish that uDig should tell me so.
Well, I think I gave you something to chew on. Good luck.
Thanks. If you want to actually see it work, try bc_elections_1996 :)
Cheers,
Cory.
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