Hi all,
I am new to postgis and I need to find intersection of three polygons.
In my table named "mytable" contains large no of polygon coordinates and
grouped into three categories by adding a field called "filename".I
labelled the category names as part1, part2, part3 in filename . Now I need
to
Thanks for your reply Paul.
Yes, that's what I thought. That would explain why (0,-82) is inside the
polygon.
Nevertheless, if my first segment runs through the south pole, then I would
expect both of the queries mentioned in my initial post to return 0 which
is not the case.
Sebastien
On Mon, Fe
I don't the polygon you've draw means what you think it does.
POLYGON((-90 -80, 90 -80, 90 10, -90 10, -90 -80))
For example, you probably figure the first segment, -90 -80, 90 -80 runs
east-west between two points close to the south pole. In fact, it runs
directly over the south pole, so actuall
Hi all,
I am new to postgis and I am interested in finding all the points that are
located at x metres or less of a polygon that are stored in my postgres
database.
As I am working with data located all over the world and want to work with
distances in metres I decided to use the geography type.
