Hi Ted: To answer your questions...
1) Yes, I believe so. Shapes that share an edge have a distance between
them of 0 and are considered to intersect. MapServer doesn't have a means
to easily detect adjacency as things sit now.
2) No, the code skips A if A is the selection layer. You could duplicate that
layer
in your mapfile though to get around that.
Steve
On 11/4/2009 at 10:31 AM, in message
1257352274593-3946385.p...@n2.nabble.com, Ted Spradley
tsprad...@snoogems.com wrote:
Hi,
I want the user to select a polygon from the map, then return a hilited map
of the selected polygon as well as the adjacent polygons along with a list
of the names of each polygon.
I have all of the parts of my desired query functioning independently, but
not all in concert.
featurequery: (layer A *must* be a polygon layer, version 5.4 supports
LINE layers as well)
- find the first geometry that intersects point x,y in layer A and use
it to select geometries that intersect it in layer B
- find the first geometry that intersects point x,y in layer A and use
it to select geometries that intersect it in all other layers
Two questions:
1. With mode=featurequery, does setting TOLERANCE 0 in polygon layer B
return the adjacent polygons
to the polygon return from layer A?
2. If I make a mode=featurequery with an img.x img.y against a polygon
layer slayer=A, if I also specify qlayer=A will MapServer query layer A
first to find the polygon containing the point, then query layer A again to
find the intersecting (adjacent) polygons?
Thanks,
Ted S.
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