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Google introduce new Geocoding Web Service PDF Print E-mail
News - Latest News
Written by Richard Marsden   
Tuesday, 09 March 2010 16:18

Google have just announced a new Geocoding Web Service that implements improvements of version 3 of their Google Maps API. These improvements include a flatter response format that is easier to parse; ability to tag address components; support for full names and abbreviations;ability to differentiate between rooftop and interpolated results; and support for bounding boxes and recommended viewports for each result.

The Geocoding Web Service is also intended to enable pre-caching of results. Ie. you can locally store your geocoded lookups for efficiency. However in the Terms & Conditions, Google restrict this function so that you are only allowed to display cached results (or data derived from them) on a Google Map or Google Earth display.

A Google Maps API key is also no longer required, but requests are limited to 2500 per IP address per day.

Freeing up the conditions regarding data caching is a step in the right direction, but many users will find the limitations of display application and requests per day to be too limiting.

The blog announcement post can be found here.
 
Book Review: The Illustrated Guide to Nonprofit GIS and Online Mapping PDF Print E-mail
Articles - Book Reviews
Written by Richard Marsden   
Monday, 08 March 2010 09:01

The Illustrated Guide to Nonprofit GIS and Online Mapping is an eBook published by Community Cartography Project's MapTogether.org website and released under a Creative Commons license. This review covers "version 0.99" which was published on 23rd February 2010.

 
Dracones, a Component Framework for MapServer PDF Print E-mail
Articles - Feature Articles
Written by Christian Jauvin   
Monday, 22 February 2010 12:35

In this article, Christian Jauvin describes the Dracones Framework for MapServer, and the DraconesPH application that is based on this framework.

MapServer is a widely used open source GIS platform, especially useful in web environments. It is written in C, and has two primary modes of usage: through a CGI script, or in a more programmatic manner, via MapScript, a set bindings for many programming languages. Both methods are based on MapFiles, which contain specifications and parameters for a map (which can be based on a shapefile for instance), written in a declarative mini-language. The basic working of MapServer can be abstracted in an easy way: you give it a MapFile as its input, and it produces in return a (static) image of the resulting map (usually via a web server), which a client application is then free to manipulate in any useful way.

Last Updated on Monday, 22 February 2010 17:04
 
GIS Cloud (beta) has been launched PDF Print E-mail
News - Latest News
Written by Richard Marsden   
Monday, 08 February 2010 14:41

GIS Cloud has just entered its public beta phase. GIS Cloud is an online "GIS for the web". The 'cloud' in the name refers to it being SaaS (Software-as-a-Service). It is unclear if it is implemented in true 'cloud' fashion (eg. like Amazon EC2 or Microsoft's Azure). Unlike the vast bulk of the "geo-web" systems we cover, this is much more than a simple map viewer/annotator/query engine; but allows more GIS-like data operations.

 
Google adds Photosynth-like photos to Street View PDF Print E-mail
News - Latest News
Written by Richard Marsden   
Monday, 01 March 2010 12:35

The Google Maps' Street View service plays catch-up and implements a "PhotoSynth-like" service. This allows a user to navigate through a Street View panorama with geo-located photographs supplied by other users. The images have been active for a while but the navigation has only just been made public and was announced on Friday in the Google blog post, Navigate your way through user photos in Street View.

The new service is not a fully functional PhotoSynth service so you cannot jump between StreetView and an independent geo-located PhotoSynth (ie. photo assembly). Still, it works well with the panoramas in Google Maps' Street View service, and its operation is very smooth.

Most of the blog discussion concentrates on the fact that the main difference is that this uses Flash, and Bing Maps/PhotoSynth uses Silverlight which limits its accessibility on Linux systems. However I think the advantages/disadvantages might be opposite to the current online opinion. Silverlight is supported on Windows and Intel Mac systems. Take up is only 50% but that is after only about 18 months of Silverlight 2 and it is growing fast. It is supported on Linux systems using Moonlight although I do not know if Moonlight supports Bing Maps, and whether many Linux users would actually install it (those expressing an opinion on discussion blogs are usually declining Moonlight on ideological and not technological grounds). There is also the argument that desktop Linux is set to remain a tiny minority of installed systems for the foreseeable future. In contrast, Apple has a well-known dislike of Flash and many of their new systems (eg. the iPad) do not support it. Although Flash is a popular choice for new web mapping systems, there is a growing feeling that its days are numbered.

 
MetaCarta announce Red Hat version of Geotagger PDF Print E-mail
News - Latest News
Written by Richard Marsden   
Tuesday, 09 February 2010 15:19

 MetaCarta have released Geotagger for the Red Hat Linux Enterprise environment.This is described as an 'unbundling' as it was previously only available as a part of MetaCarta's Geographic Search and Referencing Platform. Geotagger attempts to tag words and phrases in natural language text with their geographic position - something generally much more sophisticated than traditional geocoding.

The press release can be found here.

 
degree becomes a full OSGeo project PDF Print E-mail
News - Latest News
Written by Richard Marsden   
Monday, 08 February 2010 13:48

Over the weekend, OSGeo announced that the deegree project has 'graduated' from incubation status and is now a full OSGeo project. Markus Schneider, Vice President of deegree, has been appointed as project representative.

deegree is a Java Framework offering the main building blocks for Spatial Data Infrastructures. Its entire architecture is developed using standards of the Open Geospatial Consortium (OGC) and ISO/TC 211 (ISO Technical Committee 211 -- Geographic Information/Geomatics). deegree encompasses OGC Web Services as well as Clients and security components.

Further information can be found on the main deegree web site.

 
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