[Therion] FW: How to mark a preferred way through a cave

[Michael Wasmund]

Thanks, Markus, for your suggestion and kind offer!

Actually meanwhile I can manage the mix of bitmaps and genuine scraps quite
well,
thanks also to help by forum participants.
Perhaps I should make a Wiki article about bitmap processing with Therion
summarizing "best practice".
I may need your help in other issues, for example, obtaining geo data for
surface modelling. I'd then contact you directly.

Michael.


-----Original Message-----
From: therion-bounces at speleo.sk [mailto:therion-bounces at speleo.sk] On Behalf
Of Markus Boldt
Sent: Mittwoch, 27. Mai 2015 23:55
To: List for Therion users
Subject: Re: [Therion] How to mark a preferred way through a cave

Hi Michael, (in english so all can understand it, but not be angry about the
poorness :-)) I know your project of "Fuchslabyrinth" and so I may say: for
the future it will be the best Idea to draw the cave or the old bitmaps new.
I know, it is very much work. But after you will have no Problems to add new
parts and you will have all advantages of Therion. Assumed you have the old
data of the centerline, that is clear. 
Some years ago, I have done the same with "Vetterhöhle" (2,5Km) and
"Bärentalhöhle" (now 440m). The Vetterhöhle was drawn in AutoCad and that
was a problem for me and others because of the very costy program and the
use of it. The Bärentalhöhle was drawn simply with Tusche (is that the same
word in English as in german?). 400m was not so much work, but enough. But
today I`am lucky about that doing, because every year there comes some
meters in addition. Drawing the Vetterhöhle in Therion was another thing,
but at the end it was the best which someone can do. 
"Fuchslabyrinth" is very longer and so very more work, but in the end you
will be lucky too. 
If you want, I can give you an offer: Give me the data and the corresponding
bitmaps and I will help you part by part. So I have additionally an
advantage; I don`t forget Therion :-) Greetings Markus

PS. All other please over directly message in german :-)



-----Ursprüngliche Nachricht-----
Von: therion-bounces at speleo.sk [mailto:therion-bounces at speleo.sk] Im Auftrag
von Bruce (External)
Gesendet: Mittwoch, 27. Mai 2015 10:44
An: 'List for Therion users'
Betreff: [Therion] How to mark a preferred way through a cave

Michael
If I understand correctly Dave's suggestion of user defined lines will only
work if you draw scraps, and I don't think that is what you are asking for
(although drawing simple scraps with only station points and route lines to
overlay your bitmaps might be your best solution).

I hesitate to suggest this, but if you don't mind using a nasty hack, you
could, for example set...
flags approx
...on the route, and then redefine l_survey_cave to emphasise the approx
centreline and make recessive other line flags.
An example of the sort of code you could use is here

http://therion.speleo.sk/wiki/doku.php/metapost?s[]=approx#general_symbol_ex
amples
"Visualize cave centreline shot flags with colour for splay and duplicate,
and dash for approximate shot flags"

This will only work with pdf and probably svg outputs, and will have no
effect on 3d outputs.

Bruce

-----Original Message-----
From: therion-bounces at speleo.sk [mailto:therion-bounces at speleo.sk] On Behalf
Of Michael Wasmund
Sent: Monday, 25 May 2015 3:31 p.m.

Hello,

If I want to mark a preferred way through a maze cave, is there a way to
"mark" or "flag" some centerlines, so that they appear different from the
majority in 2D / 3D output?
(Can't work with scraps, it's all bitmaps)

Michael.

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