Survex is

free and open-source Free and open-source software (FOSS) is a term used to refer to groups of software consisting of both free software and open-source software where anyone is freely licensed to use, copy, study, and change the software in any way, and the source ...

cave surveying A cave survey is a map of all or part of a cave system, which may be produced to meet differing standards of accuracy depending on the cave conditions and equipment available underground. Cave surveying and cartography, i.e. the creation of an accu ...

software, licensed under the

GNU GPL The GNU General Public License (GNU GPL or simply GPL) is a series of widely used free software licenses that guarantee end users the four freedoms to run, study, share, and modify the software. The license was the first copyleft for general us ...

. It is designed to be portable and can be run on a variety of platforms, including

Microsoft Windows Windows is a group of several proprietary graphical operating system families developed and marketed by Microsoft. Each family caters to a certain sector of the computing industry. For example, Windows NT for consumers, Windows Server for serv ...

Mac OS X macOS (; previously OS X and originally Mac OS X) is a Unix operating system developed and marketed by Apple Inc. since 2001. It is the primary operating system for Apple's Mac (computer), Mac computers. Within the market of ...

, and

Unix-like A Unix-like (sometimes referred to as UN*X or *nix) operating system is one that behaves in a manner similar to a Unix system, although not necessarily conforming to or being certified to any version of the Single UNIX Specification. A Unix-li ...

. Survex is very powerful cave survey software, and is actively developing into a complete cave visualization package. Centreline data is entered using plain text files, which are processed by 'Cavern'. The text files contain a hierarchy of cave surveys, each of which consists of a list of survey legs, which join survey stations. This program calculates the real world coordinates of survey stations, taking into account loop closure errors using least-squares minimization. This processed data can then be visualised using a GUI front end called Aven. Survex has no arbitrary limits, and so is particularly good for large complicated cave systems, or areas where you need to see the relationships between multiple cave systems. Survex was started in 1990 by Olly Betts and Wookey, and more recently Mark Shinwell has developed 'Aven'. Like most cave surveying software, the motivation for its creation arose from a particular surveying project - Cambridge University Caving Club's explorations in

Austria Austria, , bar, Östareich officially the Republic of Austria, is a country in the southern part of Central Europe, lying in the Eastern Alps. It is a federation of nine states, one of which is the capital, Vienna, the most populous ...

. Survex is currently being used in many large scale survey projects, across the world, for example: UK -

Ease Gill Caverns The Ease Gill Cave System is the longest, and most complex cave system in Britain as of 2011, with around of passages, including connections only passable by cave diving. It spans the valley between Leck Fell and Casterton Fell. The water re ...

Ogof Draenen, Spain - Picos de Europa, China, Austria - Dachstein, Totes Gerbirge, Indonesia, Mulu{{cite web , title = The Mulu Caves Project , url = http://www.mulucaves.org/ , accessdate = 2007-09-23

Software That Uses Survex

CaveWhere uses cavern, a program in the Survex package, for loop closure and positioning survey stations to

geographical coordinates The geographic coordinate system (GCS) is a spherical or ellipsoidal coordinate system for measuring and communicating positions directly on the Earth as latitude and longitude. It is the simplest, oldest and most widely used of the various ...

References

External links

Survex Home Page

Cave surveying Geology software Software that uses wxWidgets