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Making the survey processing pipeline consistent and documented

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Philip Sargent
2020-03-01 17:46:05 +00:00
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<html>
<head>
<title>Expo server</title>
<link rel="stylesheet" type="text/css" href="../css/main2.css" />
</head>
<body>
<h2 id="tophead">CUCC Expedition Handbook - Expo server in Cambridge</h2>
<h1>Expo server in Cambridge</h1>
<p>The server hosts
<a href="http://expo.survex.com">expo.survex.com</a>.
<p>It lives (2018) under Sam Wenham's desk. Sam works for the University Computing Service (UCS), University of Cambridge,
so this is a secure place.
<p>We interact with it using:
<ul>
<li>TortoiseHg - communicating with hg running on the server - for the DVCS
<a href="../../repositories">repositories</a> expoweb, loser, tunnelx, tunneldata.
<li>FTP - mostly for uploading to /expofiles/
<li>ssh - occasionally, by experts,to fix things when something goes wrong or for major site reconfiguration.
</ul>
Now readthe <a href="manual.html#manual">Expo data management systems manual</a>.
<hr />
<ul id="links">
<li><a href="index.htm">Expedition Handbook</a>
</ul>
</body>
</html>

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<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
<title>CUCC Expedition Handboo - Survey software</title>
<link rel="stylesheet" type="text/css" href="../css/main2.css" />
</head>
<body>
<h2 id="tophead">CUCC Expedition Handbook</h2>
<h1>Installing surveying tools</h1>
<h2>Survex</h2>
<p>The main software we use to process cave data and surface surveys is <b>survex</b>
which has been written over several decades by CUCC cavers.
The first version was written during the 1990 Expo in Austria in the (old) potato hut.
A <a href="survexhistory96.htm">history of survex</a> article was published in Cambridge Underground 1996. It covers the period 1988-1996.
<p>Download the survex package here: <a href="https://survex.com/">www.survex.com</a> and install it.
<p>You will discover that the application installed is actually called "aven" but do not be concerned.
This is what you will use to visualise .svx files as beautiful cave centre-line surveys.
<p>If you are entering new survey data from a new cave, you will also need either
<a href="https://bitbucket.org/goatchurch/tunnelx/wiki/Home">TunnelX</a> or
<a href="https://therion.speleo.sk/">Therion</a> to
convert your sketches into actual plan and elevation presentation-quality surveys.
<h2>TunnelX</h2>
<p>Tunnel was written by <a href="http://expo.survex.com/folk/l/jtodd.htm">Julian Todd</a> (18 Austrian expos since 1989). It allows the generation of full 3D models of cave passages which can be viewed using a VRML browser.
<p>
<a href="https://bitbucket.org/goatchurch/tunnelx/wiki/Home">TunnelX intro</a>.
<p>
<a href="https://bitbucket.org/goatchurch/tunnelx/wiki/Installing_and_Running">TunnelX installation and running</a>.
<p>
<a href="http://expo.survex.com/expofiles/tunnelwiki/wiki/pages/Tunnel.html">TunnelX detailed wiki documentation (old)</a>.
<h2>Therion</h2>
<p>
<a href="https://therion.speleo.sk/">Therion</a>
<h2>GPS stuff</h2>
<p>GPS is increasingly important for all the surface work.
<p>
<a href="https://wiki.openstreetmap.org/wiki/GpsPrune">GPS Prune</a> is a vitally useful utility.
<h2>Digital recording underground</h2>
<p>
<a href="https://sites.google.com/site/speleoapps/home">TopoDroid</a> is an Open Source Android app to make cave surveys with the DistoX.
TopoDroid is an Open Source Android app to make cave surveys with the DistoX.
<p>
Features:
<pre>
* communication with the DistoX device(s),
* support A3 and X310 DistoX * data stored in a SQLite DB.
* surveys management: stations entry, notes and comments.
* exported survey formats: Therion, Compass, Survex, VisualTopo, DXF, csv.
* imported survey formats: Therion.
* sketch drawing, Therion-wise with points (symbols), lines and areas. Saved as th2 files, PNG images, and DXF files.
* user-defined drawing symbols.
* save whole survey as ZIP archive, and restore from it.
* 3D display (using Cave3D). * photoes and GPS localization (using GPSaverage).
* internal sensors measures and external measures. * DistoX calibration.
</pre>
<h2>Other old stuff</h2>
<p>
<a href="https://code.google.com/archive/p/loch/">Loch</a> This is fork off of Therion's loch program.
The goal is to model Cave systems in 3d and have a high degree
of interaction between the user and the information.
There is currently no working version and it has not been updated since 2007.
<p>
<a href="https://code.google.com/archive/p/topolinux/">TopoLinux</a>
consists of cave surveying applications for Linux PC and Android devices. Apparently superseded by TopoDroid and other tools on that website.
<p>
<a href="https://code.google.com/archive/p/psurvex/">psurvex</a>
"A Survex compatible cave survey data processor for Psion palmtop computers" by Matt Ryan, 2004.<br>
My task was to write a new program which could read the data from an external file,
ideally one which resembled a .svx file as much as possible.
Psurvex supports
only a subset of the .svx file format but the same file should process in Survex
without any problems. You need to write a .svx file and save it somewhere on your machine.
This program will then process the file and create a second file containing a list of
points for plotting on graph paper and some statistics about your survey.
<hr />
</body>
</html>