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Government ArcGIS server addresses: Curated list of 3,500+ ArcGIS server addresses from federal to local. Updated once per week. Bad links fixed or flagged. NOAA Big Data Project: NOAA generates tens of terabytes of data a day from satellites, radars, ships, weather models, and other sources. While these data are publicly available, it is ...
ESRI Shapefile; ArcInfo coverages; ArcSDE layers; Images; ArcIMS Services (e.g., Geography Network sources) ArcExplorer performs a variety of basic GIS functions, including display, query, and data retrieval applications. The ArcExplorer installation can be freely distributed on spatial data CDs so recipients can view data effectively.
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 ]
This was most common from the 1970s through the early 1990s, because GIS software developers had to invent their own geometry data structures, but incorporated existing relational database file formats for the attributes. For example, the Esri Shapefile format includes the .dbf file from the DOS dBase software.
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.
The Geospatial Data Abstraction Library (GDAL) is a computer software library for reading and writing raster and vector geospatial data formats (e.g. shapefile), and is released under the permissive X/MIT style free software license by the Open Source Geospatial Foundation.
Shapefile – open, hybrid vector data format using SHP, SHX and DBF files (by ESRI) Spatial Data File – high-performance geodatabase format, native to MapGuide (by Autodesk ) TIGER – Topologically Integrated Geographic Encoding and Referencing
The data behind ArcIMS is usually stored in Shapefile format (an open specification) or in an ArcSDE RDBMS database. The Data Delivery Extension (DDE), an extension to the ArcIMS product, delivers data to users in a data format and coordinate system of their own choosing, in order to have access to data in a format compatible with their local ...