Hi,
I was playing with KML today and noticed two things with our demo data:
- sf:roads displays fine, but the clickable centroids are very very
small compared to the polygonal ones
- tasmania roads show fine at first, but as you zoom in they
disappear into the ground more and more if you have 3d ground
enabled. If you don't, zoom in enough and they'll eventually
disappear completely anyways... just it'll happen in a single
shot
Looking at the dimensions of the clickable icons, it seems that
lines have the smaller, polygon middle size, and points, whoa,
big, a point you won't have any trouble clicking for sure 
See attached screenshot
Cheers
Andrea
--
Andrea Aime
OpenGeo - http://opengeo.org
Expert service straight from the developers.
(attachments)
Yeah... its tough. For long lines having a bigger size icon makes sense but for lots of short lines it looks pretty bad, especially hen zoomed out.
What would be nice is to able to specify the size dynamically, as an additional request option.
Andrea Aime wrote:
Hi,
I was playing with KML today and noticed two things with our demo data:
- sf:roads displays fine, but the clickable centroids are very very
small compared to the polygonal ones
- tasmania roads show fine at first, but as you zoom in they
disappear into the ground more and more if you have 3d ground
enabled. If you don't, zoom in enough and they'll eventually
disappear completely anyways... just it'll happen in a single
shot
Looking at the dimensions of the clickable icons, it seems that
lines have the smaller, polygon middle size, and points, whoa,
big, a point you won't have any trouble clicking for sure
See attached screenshot
Cheers
Andrea
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Justin Deoliveira
OpenGeo - http://opengeo.org
Enterprise support for open source geospatial.