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Subject: RE: [emergency] Circle and Polygon
I asked my GIS programmers the same question. Their response was that they could live with it either way, but that they actually found it easier to program against ti the way it is now. On the other hand more structure makes it easier to validate prior to programming. And... The GJXDM is more like what Dr. Iannella has suggested. Folks?.... Gary A. Ham Senior Research Scientist Battelle Memorial Institute 540-288-5611 (office) 703-869-6241 (cell) "You would be surprised what you can accomplish when you do not care who gets the credit." - Harry S. Truman -----Original Message----- From: Renato Iannella [mailto:renato@nicta.com.au] Sent: Wednesday, June 08, 2005 1:41 AM To: Emergency_Mgt_TC TC Subject: [emergency] Circle and Polygon The "Circle" element defines a substructure of "longitude, latitude radius". The "Polygon" element defines a substructure of "longitude, latitude longitude, latitude..." Q1: It would be useful to define a re-useable structure for longitude and latitude that is used for both elements. It would end up like this: <circle> <long>38.333</long> <lat>-122.333</lat> <radius>12</radius> </circle> <polygon> <long>38.333</long> <lat>-122.333</lat> <long>33.333</long> <lat>-13.333</lat> ... </polygon> Q2: The "Polygon" element states that the first long/lat pair is repeated at the end of the list. If this necessary? That is, we can assume that if it is a Polygon, the last long/lat pair will have to join to the first? Cheers... Dr Renato Iannella Project Leader, NICTA, Brisbane, QLD, AUSTRALIA P: +61 7 3000 0484 F: +61 7 3000 0480 M: +61 4 1313 2206 E: renato@nicta.com.au W: http://nicta.com.au ------------------------------------------------------------------------ -- This email and any attachments may be confidential. They may contain legally privileged information or copyright material. You should not read, copy, use or disclose them without authorisation. If you are not an intended recipient, please contact us at once by return email and then delete both messages. We do not accept liability in connection with computer virus, data corruption, delay, interruption, unauthorised access or unauthorised amendment. This notice should not be removed. --------------------------------------------------------------------- To unsubscribe from this mail list, you must leave the OASIS TC that generates this mail. You may a link to this group and all your TCs in OASIS at: https://www.oasis-open.org/apps/org/workgroup/portal/my_workgroups.php
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