Natural Earth is a public domain map dataset available at 1:10m, 1:50m, and 1:110 million scales. Featuring tightly integrated vector and raster data, with Natural Earth you can make a variety of visually pleasing, well-crafted maps with cartography or GIS software.
JOSM goes multi data layer July 18th, 2007 The latest JOSM now supports multiple data layers again. This was requested since about the day after I removed the feature over a year ago ;-) . As another big data source hits the main database (AND’s nethe
SEDAC’s mission is to develop and operate applications that support the integration of socioeconomic and earth science data and to serve as an “information gateway” between the earth sciences and social sciences.
The U.S. Census Grids provide raster data sets that include not only population and housing counts, but a wide variety of socioeconomic characteristics. These gridded data sets transform irregularly shaped census block and block group boundaries into a regular surface – a raster grid – for faster and easier analysis.
S. Sun, S. Prasher, и X. Zhou. Conceptual Modeling for Advanced Application Domains, том 3289 из Lecture Notes in Computer Science, Springer Berlin Heidelberg, (2004)
M. Hampe, M. Sester, и L. Harrie. ISPRS Congrese, том XXXV из International Archives of Photogrammetry, Remote Sensing and Spatial Information Sciences, стр. 135-140. Lund University, Dept of Physical Geography and Ecosystem Science, (2004)