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168 lines
8.7 KiB
HTML
168 lines
8.7 KiB
HTML
<html>
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<title>CUCC Expo Surveying Handbook: Drawing Up</title>
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<link rel="stylesheet" type="text/css" href="../../css/main2.css" />
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</head>
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<body>
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<h2 id="tophead">CUCC Expedition Handbook - New Survex file</h2>
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<h1>Drawing up your survey</h1>
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<h2>Great, I have discovered a new cave...</h2>
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<p>If you have not come to this page from the sequence starting at <a href="newcave.html">Starting a New Cave"</a> then go and read that first.
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<div style="width:100%;height:50px;background:#C8E1E2" align="center">
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This page outlines step 4 of the survey production process. Each step is documented separately.<br />
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<!-- Yes we need some proper context-marking here, breadcrumb trails or something.
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Maybe a colour scheme for just this sequence of pages
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-->
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<a href="newcave.html">1</a>
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- <a href="newwallet.html">2</a>
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- <a href="newsurvex.html">3</a>
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- <a href="drawup.htm">4</a>
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- <a href="newrig.html">5</a>
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- <a href="caveentry.html">6</a>
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- <a href="ententry.html">7</a>
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- <a href="cavedescription.html">8</a></div>
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<h2>Process</h2>
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<p>
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<h3>Drawing up your survey</h3
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<p>The original notes and sketches will be filed in a clearly marked
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wallet - see <a href="newwallet.html">"Starting a new wallet"</a>
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- don't take them out until you are ready to scan them, and put them
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away again as soon as you have finished. They may never be referred to again,
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but ultimately they are the most valuable record of your survey and are kept
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for reference if there is ever a problem.</p>
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<p>After typing in all the data in <a href="newsurvex.html">
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survex format</a> , run
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<a href="https://survex.com/docs/manual/aven.htm">aven</a> (the GUI interface - installed when you installed survex) and print out a centre-line plan.
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<p>OK if this is your first time doing this, you need to go through the
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<a href="newsurvex.html">"How to use survex" training procedure</a>.
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<h3 id="runsurvex">Running survex to create a centre-line</h3>
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<p>Seriously, go and follow all the rest of the links you skipped the first time in the <a href="newsurvex.html">"How to use survex" training procedure</a>.
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<h3 id="rescan">Transcribing and re-scanning your sketches</h3>
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<p>Use aven to print out the centre lines of the passages. Now you will have to decide whether to use Tunnel or Therion. Expo has a polciy decision on this: if it is an entirely new disconnected cave, then use Therion. If it is a passage in a cave where previously we used Tunnel, then use Tunnel. See also <a href="/expofiles/tunnelwiki/wiki/pages/Other_Cave_Software.html">Comparison of Tunnel to Other Cave Software</a>.
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<p>
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<div class="onright">
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<figure>
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<a href="/expofiles/tunnelwiki/wiki/pages/Tracing_the_Image.html">
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<img src="sketch6.gif" ></a>
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<figcaption style="font-variant-caps: small-caps;">
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<em>Tracing the image - click for tutorial</em>
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</figcaption>
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</figure>
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</div>
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Take the printed centre lines on paper and redraw the survey round it, working from
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the original sketches as if this was to be the final published survey. You
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can "invent" details like boulders in boulder-strewn passage, but otherwise,
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draw only what was recorded faithfully in the cave. If this makes your
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drawing look bad - record more next time! If things really are unclear,
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consider taking a copy of this drawing back into the cave to clarify it.</p>
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<p>Now scan your sketch, transfer the file to the <em>expo laptop</em> and open it in Tunnel (or Therion).
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Using a mouse on the screen within Tunnel (or Therion), you will then trace over the image and thus create a vector drawing of the cave.
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Very detailed instructions for doing this in Tunnel are in <a href="/expofiles/tunnelwiki/wiki/pages/File_Formats.html#Raw_Sketch_Data">Tunnel Wiki: Raw Sketch Data</a>
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<h3 id="filescans">Filing your sketches</h3>
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<p>The files of your scanned and re-scanned sketches should be stored in the same folder
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as the scanned notes, i.e. (for wallet #19, for expo 2018) you would upload them to folder
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<a href="/walletedit/2018:19">2018#19</a>.
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This is actually stored in:
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<tt>
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/home/expo/expofiles/surveyscans/2018/2018#19/
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</tt>
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but you don't need to know that as the Upload Scan form just uses the wallet name
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<a href="/walletedit/2018:19">2018#19</a>
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(but this is not where you will put your finished Tunnel or Therion vector files.)
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<h3 id="therion">Using tunnel or therion for final survey production</h3>
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<ul>
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<li><a href="/expofiles/documents/surveying/Tunnel_Guide.pdf">How to use Tunnel</a> - PDF - Brendan's guide.
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<li><a href="/expofiles/documents/surveying/tunnel-loefflerCP35-only.pdf">Guide to using Tunnel</a> - PDF - David Loeffler's documentation.
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<li><a href="/expofiles/tunnelwiki/wiki/pages/Tunnel.html#Tutorial">Tunnel tutorial</a> - an advanced tutorial with many examples
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</ul>
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<p>Tunnel only produces plan surveys, but they are very pretty.
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<p>The tunnel (or therion) vector files should NOT stored in the same folder as the scanned notes. You will upload
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them to the version-controlled repository
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<var><a href="../computing/repos.html">drawings</a></var>
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using the <a href="/dwgupload/">Upload Drawings</a> form. You will put them in <a href="/dwgupload/uploads">the Uploads Folder</a>. You can create your new subfolders there by typing them in to the browser address bar, e.g. <a href="/dwgupload/uploads/my_new_subfolder">my new subfolder</a>
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<p>If you are working on the <em>expo laptop</em> then put them in <var>/home/expo/drawings/{cavenumber}</var>.
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Look at what is in there already and ask someone which directory to put them in. It will probably be a folder like this:
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<tt>
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/home/expo/drawings/264-and-258/toimport/
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</tt>
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<h3>Preparing input into to Tunnel or Therion</h3>
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<p>Make sure the drawing clearly shows the point of connection to previous
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surveys (look at the relevant drawing in the old survey book to ensure the
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sketches match and you really have connected where you think). Make sure you
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note which Question Mark was addressed by this survey and show the location
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of any new question marks, with an estimate of quality and any difficulties
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which will be encountered (eg. if it is a climb, are bolts going to be
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needed ? If a dig, is it a few loose boulders or a crawl over mud?)</p>
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<h3>Archaic: hand-drawing the final survey</h3>
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<p>The actual published cave-survey is produced by software these days.
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These notes come from a different age but reading them will make your tunneling better
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and more polished:
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<div style="margin-left: 3em; margin-right: 4em"><em>
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<p>Drawing a cave entirely by hand is not easy but anyone can learn to do it.
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Read the brief <a href="/expofiles/documents/surveying/XI-2-11.pdf">Cave Mapping - Sketching the Detail"</a>
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5-page llustrated guide by Ken Grimes which makes everything clear.
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For preliminary exploration (Grade 1 surveys) this is still appropriate.
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<p>CUCC use a set of symbols pretty close to the standard ones promulgated
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by the BCRA, with occasional differences - such as large-enough boulders
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which are sketched to scale using the US symbol. The current state of
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standardisation for cave survey symbols (a useful guide to what we should
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be using where possible) has been documented by
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<a href="http://www.chaos.org.uk/survex/cp/CP14/CPoint14.htm">Häuselmann,
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Weidmann and Ruder (1996)</a>, but this is up for discussion in 1997.
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An alternative set of standards can be seen from the
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Australian Speleological Federation
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<a href="http://www.caves.org.au/resources/internal-resources/category/29-surveying">here</a>.</p>
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<p>Make sure that you draw both plan and elevation (the latter should be an
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extended section, rather than a projected elevation) for horizontal passage.
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For pitches, several plans at different levels may be easiest (rather like
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the cross sections at each survey station used in horizontal passage). Also
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projected elevations may be useful in addition to the extended section. But
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learning a good set of procedures for using survex is the way to go.</p>
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<p>If you did all that properly, there should be very little left to do in
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the UK, unless you have volunteered to help with drawing up the final survey.
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(Fool!) However, it is as well to check that you have done all you can before
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BCRA conference, by reading the <a href="athome.htm">Back in the UK</a> page.</p>
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<!-- This looks like a rather hollow joke in the context of the last year's
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experience: it's now late April 2004, and the 204 survey is only just
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approaching completion. This shows how easy it is for these things to go wrong.
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The chief problems were a change of software and the fact that the Expo printer
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broke down last summer, so a number of surveys never got drawn up. -->
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</em></div>
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<hr />
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<p>Back to the previous page in this sequence <a href="newsurvex.html">Starting a new survex file</a>.
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<br />Now go the the next page in this sequence <a href="newrig.html">Creating a new rigging guide"</a>.
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<hr />
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</body>
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</html>
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