By Songnian Li, Suzana Dragicevic, Bert Veenendaal

ISBN-10: 0203805666

ISBN-13: 9780203805664

ISBN-10: 0415804833

ISBN-13: 9780415804837

ISBN-10: 0415890810

ISBN-13: 9780415890816

Advances in Web-based GIS, Mapping prone and Applications is released as a part of ISPRS WG IV/5 attempt, and goals at proposing (1) fresh technological developments, e.g., new advancements lower than internet 2.0, map mashups, neogeography etc; (2) Balanced theoretical discussions and technical implementations; (3) observation at the present levels of improvement; and (4) Prediction of advancements over the following decade. Containing 21 contributions from 60 researchers energetic inside of ISPRS groups, such a lot of them from academia and a few from governments, the publication covers a variety of themes relating to the state of the art in net mapping/GIS and geographic details companies. the quantity is prepared in 5 sections:

1. Analytical and Geospatial Services;

2. Performance;

3. Augmentation and LBS;

4. Collaboration and selection Making, and five. Open criteria for Geospatial Services.

Supported through numerous technical info and examples, an total view of the present achievements and growth made within the box of web-based GIS and mapping providers is given. The chapters replicate well timed and destiny advancements addressing: consistent updating of comparable internet and geospatial applied sciences in addition to the revolution of internet mapping as a result of mainstream IT owners resembling Google, Yahoo and Microsoft; elevated curiosity from on geo-spatial details applied sciences; and lengthening call for from most of the people for urged and powerful spatial info providers. Advances in Web-based GIS, Mapping providers and Applications will attract academia and researchers, software experts and builders, practitioners, and undergraduate and graduate scholars attracted to allotted and web-based geoinformation structures and purposes, geodatabases, and electronic mapping.

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Extra info for Advances in Web-based GIS, Mapping Services and Applications

Sample text

4 GeoRSS GeoRSS originates from Really Simple Syndication (RSS), a very common XML-based web feed and syndication format that automatically updates the web content of an Internet application by an external provider. A web feed is a lightweight version of the original text that includes a headline, an abstract, a hyperlink to the original content and ancillary metadata such as publishing date and time. The prefix “geo” in GeoRSS refers to Geographically Encoded Objects for RSS feeds, implying additional spatial information embedded within the web feed content as in a RSS file.

Common examples of Maps API include Google Maps API, Yahoo! Map Developer API, Mapquest OpenAPI, Microsoft Bing Maps Control and ESRI ArcGIS JavaScript API. Among the maps APIs, ArcGIS JavaScript API offers functionalities commonly available in convention GIS, such as buffering, viewshed analysis, thematic mapping, etc). The OpenLayers JavaScript API is a free API “developed for and by the Open Source software community” (OpenLayers 2009). A unique characteristic of this new API is the separation of map tool from the map data, which remains very flexible about the data formats and sources of base map.

0 to represent a point feature. 3:CRS84" } } } Figure 6. A GeoJSON representation of a point feature. When the GIService provider returns a GeoJSON object (by using the HTTP GET method, AJAX XMLHttpRequest object, or other methods), the client application will need to parse the data. Using JavaScript as the client scripting language as an example, one may use the eval() method to parse the GeoJSON data as an object to get access to its properties and values. indb 22 4/12/2011 4:15:59 PM than data serialization, parsing JSON data from an unknown or malicious source may cause severe browser security issues.

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Advances in Web-based GIS, Mapping Services and Applications by Songnian Li, Suzana Dragicevic, Bert Veenendaal


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