<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto">Try to arange your surveys to a structure with several layers (“name spaces”).<div><br></div><div>Martin<br><br><div id="AppleMailSignature" dir="ltr">Odesláno z iPhonu</div><div dir="ltr"><br>21. 4. 2019 v 5:58, Bruce Mutton <<a href="mailto:bruce@tomo.co.nz">bruce@tomo.co.nz</a>>:<br><br></div><blockquote type="cite"><div dir="ltr"><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><div>Tarquin</div><div>Have a look at </div><div><a href="https://therion.speleo.sk/wiki/faq#how_do_i_specify_a_main_entrance_and_also_the_other_entrances">https://therion.speleo.sk/wiki/faq#how_do_i_specify_a_main_entrance_and_also_the_other_entrances</a></div><div>to find out more about specifying what is a cave and what is just another entrance. </div><div><br></div><div>To see what Therion is interpreting from your input, cave-list and survey-list are a good compliment to the map output statistics. Surface survey is not counted as cave survey, so the statistics are not reported on map outputs. </div><div>Yes you do need to structure your data to define which trips belong to which caves. I would also have an overall surface survey to contain all of the surface trips. </div><div>Also, flags surface and flags not surface are required to distinguish cave passage from from surface survey. I prefer to also make sure the surface survey is in its own centreline (or own survey) if it is more than just once or two legs. </div><div><br></div><div>In general I find it preferable to keep surface survey for surface (including isolated features like shafts), and create a new trip file for each cave. This helps maintain a clear separation of data for subsequent survey processing and statistics gathering. </div><div><br></div><div>Bruce</div><div id="composer_signature"><div style="font-size:85%;color:#575757" dir="auto">Sent from my Samsung Galaxy smartphone.</div></div><div><br></div><div style="font-size:100%;color:#000000"><!-- originalMessage --><div>-------- Original message --------</div><div>From: Tarquin Wilton-Jones via Therion <<a href="mailto:therion@speleo.sk">therion@speleo.sk</a>> </div><div>Date: 19/04/19 06:33 (GMT+12:00) </div><div>To: <a href="mailto:therion@speleo.sk">therion@speleo.sk</a> </div><div>Cc: Tarquin Wilton-Jones <<a href="mailto:tarquin.wilton-jones@ntlworld.com">tarquin.wilton-jones@ntlworld.com</a>> </div><div>Subject: [Therion] How to get the right count for cave lengths </div><div><br></div></div>Hi,<br><br>I have nearly completed the total survey for the system I am mapping. In<br>total, there are a series of little caves (actually mines, but I will<br>stick with the word "caves" because it is clearer), a blind surface<br>shaft, and a couple of significantly long caves. In total, these were<br>surveyed over a series of 6 trips. On one of those trips, we surveyed<br>the surface, and any short fragments of passage that we encountered that<br>way. One of those fragments turned out to be one of the major caves. The<br>major cave's survey was subsequently completed on another trip, but its<br>first few metres are included in the surface survey.<br><br>I am used to Survex. Each of the surveying trips has its own .th file:<br><br><a href="http://overall.th">overall.th</a> ("input"s all the other files)<br>surface1/<a href="http://surface1.th">surface1.th</a> (contains the entrances to several fragments, and<br>the first 2 legs of cave 1)<br>surface2/<a href="http://surface2.th">surface2.th</a> (contains the blind shaft's plumbed depth and some<br>other entrances)<br>cave1/<a href="http://cave1.th">cave1.th</a> (does not contain any entrances, but is a long cave,<br>connected to the "cave 1 legs" in <a href="http://surface1.th">surface1.th</a><br>cave2/<a href="http://cave2.th">cave2.th</a> (contains the first part of cave2, and its entrance)<br>cave3/<a href="http://cave3.th">cave3.th</a> (contains cave3, with two entrances)<br>cave2ext/<a href="http://cave2ext.th">cave2ext.th</a> (contains the second part of cave2)<br><br>Cave1 is connected to cave2.<br><br>Each entrance is marked using "station 2 Cave1 entrance" in the<br>centreline section of the file where it is defined. Survex only displays<br>aggregate statistics. Therion tries to identify "caves", which is a<br>concept I am not used to.<br><br>I had hoped that Therion would be smart enough to see that caves are<br>connected to each other, and work out the connected lengths. But it<br>seems that it only works out the length of the files within the same<br>survey. Cave1 doesn't get any length. Cave2 gets only the length from<br><a href="http://cave2.th">cave2.th</a> - the length of the cave2ext and cave1 are not included.<br><br>How do I make Therion realise what caves are connected? Do I need to put<br>them into a structure like this?<br>survey overall<br>survey cave1_2 -entrance 2@cave2 -name "Caves 1 and 2"<br>input <a href="http://cave1.th">cave1.th</a><br>input <a href="http://cave2.th">cave2.th</a><br>input <a href="http://cave2ext.th">cave2ext.th</a><br>endsurvey<br>endsurvey<br><br>And if so ... how do I tell it that *part* of the cave lies within the<br>surface survey file? Do I need to split the surface survey up into<br>parts, one of which is the entrance to cave1?<br><br>Separately, when using "statistics topo-length on", it ignores the<br>surface survey legs, which is quite unfair for the person who surveyed 1<br>km of surface to link all of the entrances - they get no credit at all.<br>Can it be asked to include surface legs in the topo-length calculations<br>for survey credits?<br><br>Thanks for any advice.<br><br>Tarquin<br>_______________________________________________<br>Therion mailing list<br><a href="mailto:Therion@speleo.sk">Therion@speleo.sk</a><br><a href="https://mailman.speleo.sk/listinfo/therion">https://mailman.speleo.sk/listinfo/therion</a><br></div></blockquote><blockquote type="cite"><div dir="ltr"><span>_______________________________________________</span><br><span>Therion mailing list</span><br><span><a href="mailto:Therion@speleo.sk">Therion@speleo.sk</a></span><br><span><a href="https://mailman.speleo.sk/listinfo/therion">https://mailman.speleo.sk/listinfo/therion</a></span><br></div></blockquote></div></body></html>