The Bristol Amnesty International Group has a bookshop on Gloucester Road. I walk past it and can’t help but beachcomb through the 20p shelf they have in the street, despite the dangerous state of my overloaded bookshelves. From yesterday’s semi-random purchase, Ernest Bevin – Unskilled Labourer and World Statesman, by Mark Stephens: There were a […]
*************************** * Welcome to LambdaMOO! * *************************** PLEASE NOTE: LambdaMOO is a new kind of society, where thousands of people voluntarily come together from all over the world. What these people say or do may not always be to your liking; as when visiting any international city, it is wise to be careful who you […]
GIS and Spatial Extensions with MySQL. MySQL 4.1 introduces spatial functionality in MySQL. This article describes some of the uses of spatial extensions in a relational database, how it can be implemented in a relational database, what features are present in MySQL and some simple examples. I’m hoping to understand the commonalities between this and […]
As a contrast to the GML/KML and Google-related posts, here is an annotated Yahoo! map, derrived from geo-extended RSS 2.0 markup. I tried feeding the service a variant of RSS 1.0 last week (albeit with the Yahoo! extensions implicitly in the RSS namespace) and it seemed to work. They don’t yet have worldwide coverage, unfortunately. […]
I’ve been trying to get lat/long GPS data embedded in my photos, before I upload them to Flickr, so that geobloggers.com will make use of the data. So far, I can only get that site to use explicit “geo:lat=123.345” based flickr-tagging; embedded EXIF seems ignored. See ongoing discussion in the Flickr GeoTagging group.
I spent some time yesterday talking with Ron Lake about GML, RDF, RSS and other acronyms. GML was originally an RDF application, and various RDFisms can still be seen in the design. I learned a fair bit about GML, and about its extensibility and profiling mechanisms. We discussed some possibilities for sharing data between GML, […]
RDF versus GML, Chris Goad (Sept 2004), GML is the XML language for geography developed by the Open GIS consortium. The third major revision of this specification, known as GML3, was released in January of 2003. RDFMap, when used in conjuction with RDFGeom, constitutes an attempt to develop an alternative approach based on RDF to […]
This is the hidden gem of Google Earth. Adding a “Network Link” allows you to fetch KML data from remote servers. It does this in two ways, Time Based or Location Based. So *anyone* can add dynamic data to Google Maps. Apparently KML is based on GML. I don’t know Keyhole/Google’s work differs. There seems […]