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- Comments: Gated by NETNEWS@AUVM.AMERICAN.EDU
- Path: sparky!uunet!paladin.american.edu!auvm!NETCOM.COM!BCONNER
- Message-ID: <9208281844.AA24017@netcom.netcom.com>
- Newsgroups: bit.listserv.sas-l
- Date: Fri, 28 Aug 1992 11:44:12 PDT
- Reply-To: Ben Conner <bconner@NETCOM.COM>
- Sender: "SAS(r) Discussion" <SAS-L@UGA.BITNET>
- From: Ben Conner <bconner@NETCOM.COM>
- Subject: Map digitizing question
- Comments: To: sas-l@uga.cc.uga.edu
- Lines: 21
-
- Hi SASologists,
-
- I'm trying to convert a file of zip codes defined by single x,y points to
- a SAS map dataset. I have Technical Report A-107, but they start with a
- file of hand-created line segment numbers and single-use points. Since
- this file has about 208,000 points, I'm not overly fond of doing this the
- same way ;).
-
- Does anyone have a sample program that will do this already? That is,
- given a set of x,y coordinates and a polygon id (eg, zipcode), create a
- list of line segments with unique ids and a single-use file of line
- segment #s. It isn't that straightforward as the two x,y pairs describing
- a line segment could be flipped but still represent the same line.
-
- Hope this is clearer to the reader than the writer...
-
- Thanks in advance!
-
- --Ben Conner
- Southern California Edison
- (714) 368-8513
-