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| GeoCommunity Mailing List |
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| Subject: | RE: GISList: GIS P2P - * Market Research Question * |
| Date: |
01/20/2003 08:21:53 PM |
| From: |
sonny |
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This the kind of thing that OGC specifications address. Send a
"getcapabilities" request against an OGC compliant Web Map Server or Feature
Server, and you get XML document with the requisite metadata. Similarly,
the Web Catalog/Registry specification under development will also allow you
to query for data and services for multiple OGC compliant servers. This
effort includes testing of industry protocols such SOAP, WSDL, and UDDI.
Sonny Parafina
Ionic Enterprise
-----Original Message-----
From: Paul Ramsey [mailto:pramsey@refractions.net]
Sent: Saturday, January 11, 2003 12:39 PM
To: Pat Waggaman
Cc: Robert Heitzman: ajq3@spatialnetworks.com: gislist@geocomm.com
Subject: Re: GISList: GIS P2P - * Market Research Question *
One more issue, still in the vein of "not enough metadata". Your comment
reminds me: most GIS data is in projected coordinates, and many GIS
formats do not include embedded spatial reference system information. So
a large quantity of the data in the system would not be locatable on the
globe. The metadata about what coordinate system the data is in would be
critical to providing a useful spatial search routine. I think this
particular problem is the real sticking point to making a practical
implementation.
Pat Waggaman wrote:
> The user has the opportunity of plugging in Lat / Long and seeing what
> is available, if only the poorly documented data is available, that's
> what you download: if there's a selection well get down to the "pick
> and choose".
--
__
/
| Paul Ramsey
| Refractions Research
| Email: pramsey@refractions.net
| Phone: (250) 885-0632
_
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