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<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 <strong>survex</strong>
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://github.com/CaveSurveying/tunnelx">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="/expofiles/tunnelwiki/wiki/pages/A_walk_through_tunnel.html">TunnelX detailed wiki documentation (old)</a>.

<h2>Therion</h2>
<a href="../l/therion-dataflow.html"><img class="onright" src="../t/therion-dataflow.jpg"></a>
<br>

<p>Article by Wookey: <a href="/expofiles/documents/therion-cp33.pdf"><em>Drawing Surveys with Therion</em></a> (Compass Points, March 2004)
<p>
<a href="https://therion.speleo.sk/">Therion website</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. 
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