Shame on me... I should have read Adam's question more attentively ... Adam: Paul is absolutely right.
Regards, Pedro Doria Meunier On Tue, 2008-08-05 at 12:46 -0700, Paul Ramsey wrote: > Well, that's the opposite of the usual point-in-polygon use case > (given an existing set of polygons and a point input, tell me what > polygons it falls within), but it's equally tractable. > > You need an input interface, and that will be the hardest part of your > task. You can do something in Google Maps, if you like, then stuff the > geometry down into a script (php, asp, whatever) that in turn > inscribes it into a SQL statement ala: > > select points.id, points.name from points where > st_contains('POLYGON(....)', points.geometry); > > Where the 'POLYGON(...)' is constructed by your script from your user > interface input. > > Enjoy, > > P. > > On Tue, Aug 5, 2008 at 12:24 PM, Adam Vande More <[EMAIL PROTECTED]> wrote: > > Hello, > > > > Perhaps my questions were addressed earlier or in some documentation I > > missed. If so, I apologize in advance as I am completely new to GIS and > > PostGIS. Judging from the documentation I have read, my needs are extremely > > simple vs PostGIS capabilities however I am unsure if the functionality of > > what I want actually exists. > > > > I deal with areas in the US, territories that are regional in nature but not > > bounded by common things eg state lines, water ways, counties, etc. They > > are irregular shapes of varying land area. I also have sets of latitude and > > longitude points. I would like some type of system where I enter in a > > perimeter of territories, and find out whether a particular latitude and > > longitude point lies within that perimeter. > > My understanding of this is that I would need to either manually create a > > GML type file with the perimeters in it, or use some type of map authoring > > software to accomplish this goal. Are my understandings correct and if so > > is there a recommendation for a particular piece of software which can > > fulfill this? > > > > Also, are the libraries/functions available for determining whether a point > > is in a perimeter? > > > > Much appreciated, > > > > -- > > Adam Vandemore > > Systems Administrator > > IMED Mobility > > (605) 498-1610 > > > > _______________________________________________ > > postgis-users mailing list > > postgis-users@postgis.refractions.net > > http://postgis.refractions.net/mailman/listinfo/postgis-users > > > _______________________________________________ > postgis-users mailing list > postgis-users@postgis.refractions.net > http://postgis.refractions.net/mailman/listinfo/postgis-users
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