Search results
Results from the WOW.Com Content Network
In 2008, data in shapefile format was published. Please note that shapefiles are not topological, therefore may create slivers when comparing TIGER/Line boundaries. This mismatch was not possible when the census TIGER files were available in ASCII format that was topological unlike shapefiles.
U.S. Gazetteer, TIGER/Line shapefiles, census data. National Historical Geographic Information System NHGIS provides free of charge, aggregate census data and GIS-compatible boundary files for the United States between 1790 and 2012.
Shapefiles : are a data exchange format created by ESRI and one of the most widely used GIS/geodata formats. One "shapefile" usually include four different files : .shp, .shx, .dbf, .prj. First three files must all be present in order to use the data. Each shapefile can hold only one geometry type.
Geodesy Subcommittee of OGP (2012), EPSG Area Polygons, (International Association of) Oil and Gas Producers (OGP), archived from the original on 2013-05-31 (Download Shapefile 2012.11 [permanent dead link
You are free: to share – to copy, distribute and transmit the work; to remix – to adapt the work; Under the following conditions: attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made.
The shapefile format is a geospatial vector data format for geographic information system (GIS) software. It is developed and regulated by Esri as a mostly open specification for data interoperability among Esri and other GIS software products . [ 1 ]
The following are approximate tallies of current listings in California on the National Register of Historic Places. These counts are based on entries in the National Register Information Database as of April 24, 2008, [1] and new weekly listings posted since then on the National Register of Historic Places web site. [2]
In 1969, Esri was founded by the couple, Jack and Laura Dangermond, as Environmental Systems Research Institute (ESRI), in Redlands, California. Esri was established when the couple started working on the technology to integrate human development with environmental stewardship at Harvard University’s lab for computer graphics and spatial ...