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Re: [Therion] Surveying Maze Caves
From: |
Martin Sluka |
Subject: |
Re: [Therion] Surveying Maze Caves |
Date: |
Sun, 26 Nov 2006 17:48:36 +0100 |
Hi Johny,
there are several tricks for very mazy caves:
1. make short scraps
2. try not to join scraps where passages are joining
3. join named lines (with ID)
4. you may join not only ends of lines. You may use any line point of
any object not only wall. If a passage begins among blocks you may
join the beginning of passage walls to blocks line points so they
will be transformed together.
for example:
join ms3_S1_2:32 js1_S1_2:3
where ms3_S1_2:32 means 32. line point from beginning of line
ms3_S1_2 and js1_S1_2:3 means 3. line point from beginning of line
js1_S1_2
5. use transparent pits, overhangs, steps, - check examples on wiki.
line overhang -outline in -clip off
line pit -close on -outline in -clip off
6. use invisible lines if necessary
line border -visibility off -outline in
7. very important if you want to generate an atlas - you should
organize the structure of maps according to atlas pages and under and
over laying passages.
for example:
survey xxxxx
....
....
....
map hlavny_tah.m
js2_S1
mb1b_s1
mb1a_s1
mb2_s1
ms1_S1
ms2_S1
ms2_S2
break
ms2_S3
break
ms2_S4
ph1_S1
ph1_S2
ph1_S3
ph1_S4
ph1_S5
ph1_S6
ph1_S7
ph1_S8
js1_S1
ph3_S6
ph2_S1
preview above duhovy_dom.m
preview above ph_vrchna_chodba.m
preview above kralova_chodba.m
preview below ph_spodne_chodby.m
endmap
map medzibrodie.m
js4_S1
preview below duhovy_dom.m
preview below hlavny_tah.m
endmap
map duhovy_dom.m
js3_S1
preview below hlavny_tah.m
preview above medzibrodie.m
endmap
map kralova_chodba.m
ms3_S1
break
ms3_S2
preview below hlavny_tah.m
endmap
map ph_vrchna_chodba.m
ph3_S1
ph3_S2
ph4_S2
break
ph4_S1
break
ph4_S3
preview below hlavny_tah.m
preview below ph_spodne_chodby.m
endmap
map ph_spodne_chodby.m
ph3_S5
ph3_S3
break
ph3_S4
ph4_S4
break
ph4_S5
ph4_S6
break
ph4_S7
ph2_S2
break
ph2_S3
preview above ph_vrchna_chodba.m
preview above hlavny_tah.m
endmap
map klisura_a -title "Great Canyon<br>Gryka e Madhe<br>Velika Klisura"
medzibrodie.m
duhovy_dom.m
kralova_chodba.m
ph_vrchna_chodba.m
hlavny_tah.m
ph_spodne_chodby.m
endmap
endsurvey
Martin
On 25.11.2006, at 17:56, Jonathan Prouty wrote:
> Hello all,
> I have a question regarding surveying (and mapping) extremely mazy
> multi-level caves. There is a cave near my home that has never been
> mapped, I assume due to it's extremely mazy nature.
>
> I am considering taking it on as a project, however, I have no idea
> how to survey it. Do any of you have advice as to how to best
> manage such a survey?
>
> I imagine I will have to be extremely careful with how I create
> scraps in therion, as well. I can think of several places in the
> cave that have 5 or 6 passages all meeting in one small room.
>
> Any advice would be greatly appreciated. Thanks :-).
>
> Sincerely,
> Jonny Prouty
> _______________________________________________
> Therion mailing list
> address@hidden
> http://www.speleo.sk/mailman/listinfo/therion
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