Atlas of Urban Expansion
The main objective of this Atlas of Urban Expansion is to increase understanding and help residents, policy makers, and researchers around the world come to terms with the expected global urban expansion in the coming decades. The Atlas in book form introduces the project and presents two sets of full-color maps and a set of raw data tables. The first map section contains pairs of urban land cover maps from circa 1990 and 2000, representing a global sample of 120 cities. The second map section includes composite maps of a global representative sample of 30 cities, showing the historical expansion of their urbanized areas from 1800 to 2000. In both sections, the maps shown are paired with numerical and graphical data, making it possible to compare cities in terms of their metric values on key attributes of urban expansion. The third section contains four extensive tables of urban, national, and regional data for each of the 120 cities.
Data and images from the Atlas of Urban Expansion are available for download on the companion website,
Section 4: Geographic Information System (GIS) Data for Cities
The GIS data used in the analysis and in making the maps can be downloaded from the website. GIS software, such as ArcGIS, is required to view these data.
For each city in the 120 city sample, these data include:
1.two urban land cover maps, one circa 1990 and one circa 2000;
2.the administrative boundary shapefile;
3.two maps of the urban landscape categories, one circa 1990 and one circa 2000;
4.the map of new development categories (infill, extension, leapfrog).
For each city in the 30 city historical sample, these data include the urbanized area shapefiles for each time period.
Use of data should include the following citation: Angel, S., J. Parent, D. L. Civco and A. M. Blei, 2010. Atlas of Urban Expansion, Cambridge MA: Lincoln Institute of Land Policy, online at http://www.lincolninst.edu/subcenters/atlas-urban-expansion/.
The State of Oregon’s navigatOR program is pleased to announce the new generation of the Oregon Imagery Explorer. In concert with the Oregon Explorer team, we hired Esri Consulting Services to develop the new site.
You will find much of the same functionality from the old Imagery Explorer site, in addition to many new features and data. Imagery Explorer now provides streaming and download access to five generations of statewide aerial imagery: 1995, 2000, 2005, 2009, 2011, with the addition of 2009 and 2011 Color Infrared, Pictometry orthophotos in selected urban centers, bare earth hillshade, and other products derived from available Lidar data. The new functionality uses either a swipe tool or transparency overlay tool to compare imagery from any available year to another year, or to the bare hillshade.
In addition to the Imagery Explorer Application, the same imagery and Lidar-derived products can be accessed through web services in your web or desktop client of choice, allowing you to access the data without having to download and store it.