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</o:shapelayout></xml><![endif]--></head><body lang=EN-NZ link="#0563C1" vlink="#954F72"><div class=WordSection1><p class=MsoPlainText>Like this?<o:p></o:p></p><p class=MsoPlainText><img width=291 height=161 style='width:3.0312in;height:1.677in' id="Picture_x0020_1" src="cid:image001.png@01D597A3.47405700"><img width=196 height=318 style='width:2.0416in;height:3.3125in' id="Picture_x0020_2" src="cid:image002.png@01D597A3.47405700"><o:p></o:p></p><p class=MsoPlainText>I find extend very trial and error. I looked at your file and looked at my wiki page, and decided it might not be easily possible. Then I tried it out, and on my second attempt made it work. This does not necessarily mean it will work as part of a large project however!!<o:p></o:p></p><p class=MsoPlainText><a href="https://therion.speleo.sk/wiki/extend#summary_of_all_extend_options_for_survey_centrelines">https://therion.speleo.sk/wiki/extend#summary_of_all_extend_options_for_survey_centrelines</a><o:p></o:p></p><p class=MsoPlainText>Bruce<o:p></o:p></p><p class=MsoPlainText><o:p> </o:p></p><p class=MsoPlainText><o:p> </o:p></p><p class=MsoPlainText><span lang=EN-US>-----Original Message-----<br>From: Therion <therion-bounces@speleo.sk> On Behalf Of Tarquin Wilton-Jones via Therion<br>Sent: Sunday, 10 November 2019 01:46<br>To: therion@speleo.sk<br>Cc: Tarquin Wilton-Jones <tarquin.wilton-jones@ntlworld.com><br>Subject: [Therion] Breaking a loop at a specific station on extended elevation</span></p><p class=MsoPlainText><o:p> </o:p></p><p class=MsoPlainText>Hi folks,<o:p></o:p></p><p class=MsoPlainText><o:p> </o:p></p><p class=MsoPlainText>There are a few of us who are struggling with an extended elevation problem. I have attached a sample data file, which represents the data from a real cave.<o:p></o:p></p><p class=MsoPlainText><o:p> </o:p></p><p class=MsoPlainText>There is a main passage (stations 1-2-3-4-5-7), and a high level oxbow (stations 2-6-5). Because the oxbow is shorter, Therion defaults to using that as the primary extended elevation path, which is not desired.<o:p></o:p></p><p class=MsoPlainText>The natural (human preferred) way of extending that, is to show the main passage as a single line, then have the high level oxbow split at station 6, with a leg pointing to each of the two stations it connects to, and a dotted line connecting the two versions of station 6. Like this (if your email client shows this with a fixed width font):<o:p></o:p></p><p class=MsoPlainText><o:p> </o:p></p><p class=MsoPlainText> 6....6<o:p></o:p></p><p class=MsoPlainText> / \<o:p></o:p></p><p class=MsoPlainText>1--2--3--4--5--7<o:p></o:p></p><p class=MsoPlainText><o:p> </o:p></p><p class=MsoPlainText>We tried various "extend left" "extend right" and "extend ignore", and we managed to make it break station 2, but it seems not to want to break on station 6. (We can obviously break it in the right place by breaking the data, but that is not the intention is to keep the data valid.)<o:p></o:p></p><p class=MsoPlainText><o:p> </o:p></p><p class=MsoPlainText>Can someone please tell us the magic formula of extend commands that will produce the desired output?<o:p></o:p></p><p class=MsoPlainText><o:p> </o:p></p><p class=MsoPlainText>Thanks for the assistance.<o:p></o:p></p><p class=MsoPlainText><o:p> </o:p></p><p class=MsoPlainText>Tarquin<o:p></o:p></p></div></body></html>