Data sets tagged with "maps"

The US government’s ‘Topologically Integrated Geographic Encoding and Referencing’ system, usually referred to as TIGER, is based on an extensive database of US geographic information. It is county-level data that documents physical features like roads and rivers, as well as some administrative features such as Congressional districts. Data can be downloaded for ...

The Sloan Digital Sky Survey is the most ambitious astronomical survey ever undertaken. The survey has mapped one-quarter of the entire sky in detail, determining the positions and absolute brightnesses of hundreds of millions of celestial objects. It has also measured the distances (redshifts) to more than a million galaxies and quasars. This is a small (~ 5%) subset of ...

OpenStreetMap (OSM) is aimed at creating and providing free geodata such as street maps to anyone who wants them. The project was started because most maps you think of as free actually have legal or technical restrictions on their use, holding back people from using them in creative, productive or unexpected ways. The planet.osm file described at the download link above ...

Description Mainly seem to be an aggregator of data from elsewhere. From front page: > The purpose of the Libre Map Project is to aggregate and make digital maps and related GIS data available for Free. > > Data – search and download Maps and other GIS data > > Documentation – information on Cartography and GIS related topics brought to you by Wikipedia. > > ...

A guide to New York City community-based data.

Physical Features – Elevation contours with a five-foot interval for San Francisco mainland and Treasure Island/Yerba Island Based on San Francisco. Format Shapefile (.shp) License Terms of Use From the San Francisco GIS Data Catalog

Physical Features – Elevation contours – WGS Elevation contours with a five-foot interval for San Francisco mainland and Treasure Island/Yerba Island. Based on San Francisco Elevation Datum. Format Shapefile (.shp) License Terms of Use From the San Francisco GIS Data Catalog

San Francisco Facilities – City-Owned, City-Leased and other designated Critical Facilities (hospitals, shelters, et al.). Each point represents an active facility according the Real Estate Information System (REIS), formerly ICPD). The primary key, [FACILITY_I], is the link back to the REIS table CITYFACILS. The REIS serves as the foundation for information regarding ...

Flickr Shapefiles Public DatasetFlickr Shapetiles ESRI shapefiles — these files use the EPSG:900913 map projection and are derived from the shapefiles that Seth Fitzsimmons generated from the (2009) Flickr Shapefiles Public Dataset. One day he’ll even finsh writing the blog post about how he did it, too… a thing made by aaron straup cope Flickr Shapetiles is a ...

A digital version of the Geologic Map of the United States, originally published at a scale of 1:2,500,000 (King and Beikman, 1974b). It excludes Alaska and Hawaii. Additional facts from data.gov Dataset Summary Date Released: 1974 Date Updated: 1994 Time Period: timeless Data.gov Data Category Type: Raw Data Catalog Frequency: none planned Specialized Data Category ...