兴趣点

 google earth的工作原理

http://www.realityprime.com/articles/how-google-earth-really-works

适宜步行：Walkable Score制图

http://kelsocartography.com/blog/?p=509  quoted from http://greatergreaterwashington.org/

http://mapperz.blogspot.com/ blog
http://mapperz.blogspot.com/2008/07/arcgis-javascript-extension-for-google.html

介绍了ArcGIS JavaScript™ Extension for Google Maps™ ，似乎很激动人心。

http://resources.esri.com/arcgisserver/apis/javascript/gmaps/index.cfm?fa=home

Drive Time Polygons map derived from ArcGIS Geoprocessing Service

http://resources.esri.com/help/9.3/arcgisserver/apis/javascript/gmaps/samples/geoprocessor/GP_ServiceAreaExecuteGPResults.html

 The ArcGIS JavaScript™ Extension for Microsoft Virtual Earth™

http://resources.esri.com/arcgisserver/apis/javascript/ve/index.cfm?fa=home

open route service using open street map

http://mapperz.blogspot.com/2008/07/open-route-service-using-open-street.html

GMapCreator--基于GoogleMap创建专题地图
http://www.casa.ucl.ac.uk/software/gmapcreator.asp

green map项目 http://www.greenmap.org/greenhouse/zh-hans/participate/universities/research

ILWIS: http://freegeographytools.com/2007/ilwis-gis-is-now-open-source