There are several problematic places: * join of scrap the_42_streamway-42streamp with scrap marniosa_upstream_4-upstream4p First one begins in shape T, with two gaps, including part of passage upstream_4 and it is joined with streamway-42 with only one gap. I removed presumed walls and the T part * the scrap District_9_contd-1p has very strange beginning with some invisible walls with gaps and overlapping. I’m not sure therion will be able to interpret. Martin
31. 10. 2019 v 20:28, alastair gott <alastairgott@hotmail.com>:
For a conclusion, the end result is below. 🙂
<image.png>
Regards, Alastair Gott.
AlastairGott@hotmail.com <mailto:AlastairGott@hotmail.com>, M: 07931779380. From: Therion <therion-bounces@speleo.sk <mailto:therion-bounces@speleo.sk>> on behalf of Bruce Mutton <bruce@tomo.co.nz <mailto:bruce@tomo.co.nz>> Sent: 31 October 2019 19:07 To: 'List for Therion users' <therion@speleo.sk <mailto:therion@speleo.sk>> Subject: [Therion] Horrific Warping between maps where I want my lines to join
… don't join in the middle of a chamber...
Yes, an interesting thread. As Martin rightly says, joining should not be considered fully automatic, but with care it usually can be, with some provisos. https://therion.speleo.sk/wiki/tips?s[]=join#joining_scraps_together <https://therion.speleo.sk/wiki/tips?s%5b%5d=join#joining_scraps_together>
Joining in the middle of chambers or passages IS perfectly OK, indeed it is necessary every time there is a passage intersection. You just need to ensure that each affected passage has a gap in the wall to accept the join! The only restriction I have found is that there should not be two wide openings opposite each other in the same scrap. In this scenario the scrap is ‘broken in half’ and while you will get a nice pdf output, the kml plan will not plot properly (unless this feature has been fixed recently).
In Alistair’s example, the pair of green circles indicate a passage opening that can be joined. The pair of brown circles show a passage opening on one side and no corresponding opening on the other. Hence Therion found the nearest opening it could in the scraps it was instructed to join, and in this particular case was trying to join the three nearest openings together. I predict that an acceptable result would be obtained if a gap were to be opened near the brown circles.
Bruce
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