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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 file format is the native spatial data storage format for Autodesk GIS programs MapGuide and AutoCAD Map 3D. As of 2014 [update] SDF format version SDF3 (based on SQLite3 ) uses a single file. Prior versions of the format required a spatial index file (SIF), with an optional key index file (KIF) to speed access to the file.
The trend to implement software programs into the civil engineering industry began as educational concerns for the future as civil engineering prepared to enter the twenty-first century. Today, these concerns and trends are centered on the continuing education unit which have become required as part of maintaining the professional license.
An open-source Swiss Army knife of general-purpose engineering toolkits MicroStation: BIM & 3D modeling software applied for civil & structural engineering OpenSees: Earthquake engineering software PROKON: Structural analysis and design software Realsoft 3D: General 3D analysis and design software Revit
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.
GeoJSON – open, lightweight format based on JSON, used by many open source GIS packages GeoMedia – Microsoft Access based format for spatial vector storage (by Intergraph ) ISFC – MicroStation based CAD solution attaching vector elements to a relational Microsoft Access database (by Intergraph )
A 32-bit DPMI version of EAGLE 4.0 running under DOS [nb 1] was still available on special request in order to help support existing customers, but it was not released commercially. Much later, in 2015, a special version of EAGLE 4.09r2 was made available by CadSoft to ease installation under Windows 7 .
The first release of the software started with version 1.0 in December 1982. [1] The software has been continuously updated since its initial release. AutoCAD opens documents with DWG compatibility as a "DWG file format version code" where the specific version code can be found by opening the .dwg file in Windows Notepad or any text editor program.