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Date:         Mon, 15 Aug 2005 14:49:09 -0400
Reply-To:     Subject Coordinates Discussion List <[log in to unmask]>
Sender:       Subject Coordinates Discussion List <[log in to unmask]>
From:         Jimmie Lundgren <[log in to unmask]>
Subject:      Re: Question on form of coordinates (no vcard)
Comments: To: Subject Coordinates Discussion List <[log in to unmask]>
Content-Type: text/plain; charset="Windows-1251"

Hi Colleen and All, Here is a quick attempt to contrast a couple of digital coordinates forms: the Alexandria Digital Library and OCLC MARC. I hope I it's OK to copy and paste from the Alexandria Digital Library Gazetteer website. An example for entering coordinates there: <longLat longitude="-110.5" latitude="32.26883"/> <longLat longitude="-110.86778" latitude="32.15"/> <longLat longitude="-110.6" latitude="32.12278"/> <longLat longitude="-111.00278" latitude="32.186"/> <longLat longitude="-110.75" latitude="32.2"/> So, this decimal form appears to show hemisphere as minus or plus with the actual plus sign being omitted. There does not appear to be a requirement for a leading zero when the number of degrees is less than 100, nor a requirement for a particular number of places to the right of the decimal. The OCLC Bib Formats examples: Decimal degrees: hddd.dddddd (hemisphere-degrees.decimal degrees): 034 1 a ‡d E079.533265 ‡e E086.216635 ‡f S012.583377 ‡g S020.419532 Decimal degrees: + -ddd.dddddd (hemisphere[+/-]-degrees.decimal degrees [+ for N and E, - for S and W with + being optional]): 034 1 a ‡d +079.533265 ‡e +086.216635 ‡f -012.583377 ‡g -020.419532 Decimal degrees without the optional +: 034 1 a ‡d 079.533265 ‡e 086.216635 ‡f -012.583377 ‡g -020.419532 Decimal minutes: hdddmmm.mmmmm (hemisphere-degrees-minutes.decimal minutes): 034 1 a ‡d E07932.5332 ‡e E08607.4478 ‡f S01235.5421 ‡g S02028.9704 Decimal seconds: hddmmss.sss (hemisphere-degrees-minutes-seconds.decimal seconds): 034 1 a ‡d E0793235.575 ‡e E0860727.350 ‡f S0123536.895 ‡g S0202858.125 So, it seems optional to use letters or minus and plus for hemisphere in OCLC. The usage here includes a leading zero for degrees less than 100. Hoping this helps a little with the communication. Jimmie Lundgren -----Original Message----- From: Subject Coordinates Discussion List [mailto:[log in to unmask]] On Behalf Of Tom Elliott Sent: Monday, August 15, 2005 11:10 AM To: [log in to unmask] Subject: Re: [SUBCOOR] Question on form of coordinates (no vcard) There are standards for the digital encoding of coordinates and other related essential information (e.g., coordinate systems, datums, spheroids). Two places to start: One of the major bodies dealing with the establishment of such standards is the Open Geospatial Consortium ( ), which publishes relevant specifications. One also might care to look at the work of the Alexandria Digital Library Gazetteer project, whose gazetteer protocol includes specifications for the encoding of coordinates ( ). Best, Tom Tom Elliott, Ph.D. Director, Ancient World Mapping Center CB#8110 5010 Davis Library University of North Carolina Chapel Hill, NC 27599-8110 U.S.A. No VCARD this time.

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