[Therion] Entering survey sketch without walls

[Martin Sluka]

Misplaced station?

Martin

Odesláno z iPhonu

> 6. 12. 2024 v 13:59, Bill Gee <bgee at campercaver.net>:
> 
> By "double station" you mean two survey stations at the same location - right?  I did a grep on the .th2 files and found no stations where the point coordinates were the same, and also no instance of two stations with the same name in one scrap.
> 
> There are three stations which exist in both scraps, but that should not be a problem.  They are on the seam between the scraps.
> 
> I think the next thing for me to do is create another scrap or two and see how they can be made to fit in.
> 
> ===============
> Bill Gee
> 
>> On 12/6/24 02:25, Martin Sluka via Therion wrote:
>> Check if there is not a double station in a scrap - squezed pillar.
>> Martin
>> Odesláno z iPhonu
>>> 5. 12. 2024 v 22:40, Bill Gee <bgee at campercaver.net>:
>>> 
>>> I gave this a try ...  I drew partial pillars on the edge of each scrap using a normal wall line.  I changed the straight lines between the pillars to -visibility off, and I added a "join scrap1 scrap2 -count 2" to the .th file.  The result is not quite as badly mangled, but it is still not right.
>>> 
>>> Taking out the join statement gives a map that makes more sense.  There are still some artifacts where the two scraps join, and the walls on the pillar between those two scraps don't line up quite right.
>>> 
>>> I also tried it using "join scrap1 scrap2" and no -count option.  That produced a reasonable map.  The wall on the east side now has a smooth join.  The pillar in the middle still has discontinuities.
>>> 
>>> I checked the "reverse" box on the pillars which are completely contained in a scrap.  It made no difference I can see.  When I drew those lines, I went in a counter-clockwise direction.
>>> 
>>> On the upper scrap I drew lines between the pillars.  I did not draw those same lines on the lower scrap.  Is that needed?
>>> 
>>> One thing that is very apparent here is that the in-cave survey and sketching will have to be done exactly right.
>>> 
>>> Two attached PDF files, one with the "join count 2" statement and the other with no join statement.
>>> 
>>> ===============
>>> Bill Gee
>>> 
>>> On 12/5/24 13:19, Bruce Mutton wrote:
>>>>> If I draw only that part of the column which is in each scrap, can I still use "-outline in"?
>>>> No, those remain -outline out.
>>>> Also your sketches for surveys should not include the parts of the pillar walls that have not been surveyed!
>>>>> Will I need to use line joins to get the two parts of the column to come together?
>>>> No, use join scrap1 scrap2 -count 2
>>>> And you will need to replace line wall -subtype invisible with line wall -visibility off as is intimated in https://therion.speleo.sk/wiki/drawingchecklist#wall
>>>>> And will that result in a column that is entirely white on the inside?
>>>> Yes, but only once you have all wall lines in place and parameters for all lines correct (-reverse, -outline, -subtype, -visibility)
>>>> Bruce
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>>> <PracticeMine-WithJoin.pdf>
>>> <PracticeMine-WithoutJoin.pdf>
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