[Therion] Therion Map Header Overrides
Martin Sluka
martinsluka at mac.com
Thu May 10 10:37:47 CEST 2018
Many informations and examples according surveying data are in Survex manual.
Odesláno z iPhonu
10. 5. 2018 v 10:20, Nick Bairstow via Therion <therion at speleo.sk>:
> Thanks Bruce very clear examples of surface flags. I now understand their use.
>
> From: Therion [mailto:therion-bounces at speleo.sk] On Behalf Of Bruce Mutton via Therion
> Sent: 09 May 2018 21:02
> To: 'List for Therion users' <therion at speleo.sk>
> Cc: Bruce Mutton <bruce at tomo.co.nz>
> Subject: Re: [Therion] Therion Map Header Overrides
>
> Nick
> Here are some examples of various ‘flags’ usage, for shot flags, not to be confused with station flags. They are a survey property, not so much a drawing property.
>
> Approximate and duplicate:
> https://therion.speleo.sk/wiki/extend?s[]=flags#summary_of_all_extend_options_for_survey_centrelines and scroll down to the code below “Creating links between separate caves that are close to each other”. That one is a bit oddball, not typical usage.
>
> https://therion.speleo.sk/wiki/metapost?s[]=flags#general_symbol_examples to redefine centrelines to reflect flag states.
>
> And, um, yes, there is not too much on actual usage examples for flags surface. Here is a snippet from my last Sunday’s survey efforts. A short cave that required three ptopo files to adequately capture it. It is part of a survey loop that goes out of one entrance and into another…
>
> data normal from to tape compass clino ignoreall
> …
> #following legs are within the cave
> #3.18 3.19 2.099 355.01 -32.84 3.19 entrance rock
> #3.18 3.19 2.098 355.2 -32.67
> #3.18 3.19 2.098 355.31 -32.69
> 3.18 3.19 2.098 355.11 -32.73 Calculated leg from 3 above
> 3.19 - 0.269 49.83 -12.76
> 3.19 - 0.588 43.99 45.86
> 3.19 - 0.714 21.48 76.27
> …
>
> flags surface
> #following legs are on the surface
> # extend right
> #3.19 3.20 2.819 254.97 -14.44 3.21 other entrance rock
> #3.19 3.20 2.818 255.03 -14.34
> #3.19 3.20 2.819 255.11 -14.33
> 3.19 3.20 2.819 255.0 -14.37 Calculated leg from 3 above
> 3.20 - 0.556 102.47 -59.13
> 3.20 - 1.045 129.78 5.18
> #3.20 3.21 6.017 207.42 -12.3
> #3.20 3.21 6.026 207.53 -12.4
> #3.20 3.21 6.067 207.48 -12.46
> 3.20 3.21 6.037 207.47 -12.39 Calculated leg from 3 above
>
> flags not surface
> #following legs are within the cave
> 3.21 - 1.275 43.78 -4.28
> 3.21 - 2.58 41.32 3.61
> 3.21 - 2.914 39.54 15.74
> …
> # extend left
> #3.21 3.22 3.613 113.19 23.44
> #3.21 3.22 3.616 113.08 23.59
> #3.21 3.22 3.609 113.05 23.6 #rename 3.22 as 3.14 to acknowledge loop
> 3.21 3.14 3.613 113.13 23.55 Calculated leg from 3 above
> 3.14 - 4.408 324.85 -51.94
>
> The survey-list output for this cave looks like…
>
> Title
> Length
> Depth
> Explored
> Approx.
> Duplicate
> Surface
> Shots
> Stations
> Wairoa Valley Cave, Nelson
> 128
> 10
> 0
> 0
> 3
> 9
> 428
> 431
> 1-Wairoa
> 46
> 7
> 0
> 0
> 0
> 0
> 131
> 132
> 2-Upper, Wairoa Cave
> 15
> 3
> 0
> 0
> 0
> 0
> 61
> 62
> 3-Downstream, Wairoa Cave
> 67
> 3
> 0
> 0
> 0
> 9
> 235
> 235
>
> The total survey length (surface + cave + duplicate) is 140m, and 9m of it is on the surface. There is also 3m of survey in there that is duplicated (happens to be a nosurvey “shot” for a visual-only connection established at the whole-cave level of survey.
>
> Bruce
>
> From: Therion <therion-bounces at speleo.sk> On Behalf Of Nick Bairstow via Therion
> Sent: Thursday, 10 May 2018 3:02 AM
> To: List for Therion users <therion at speleo.sk>
> Cc: Nick Bairstow <Nick at pff.uk.com>
> Subject: Re: [Therion] Therion Map Header Overrides
>
> Bruce, I have never used flags. I have just been though the Therion book and wiki for information but for clarification could you post an example of surface flag use please.
>
> Thanks.
>
> Nick
>
>
> From: Therion [mailto:therion-bounces at speleo.sk] On Behalf Of Bruce Mutton via Therion
> Sent: 09 May 2018 11:04
> To: 'List for Therion users' <therion at speleo.sk>
> Cc: Bruce Mutton <bruce at tomo.co.nz>
> Subject: [Therion] Therion Map Header Overrides
>
> Nick
> > The override below is to change the Therion default team, cave length, cave depth data on the map output. Used in this case because a short surface survey needed to be shown on the map but the data was skewing the actual cave length and depth.
>
> I’m not sure that is a very good way to deal with the issue.
> In the screenshot below I have a surface survey shown (green dots), designated surface by use of ‘flags surface’, ‘flags not surface’ interleaved with the survey data as appropriate. No need to fudge the cave length or depth because Therion does not include surface data in the cave length.
> There is some complexity around it, but you can show or hide the cave and surface centrelines using;
> symbol-show group surface-centreline
> symbol-hide group cave-centreline
> Bruce
>
> <image001.jpg>
>
>
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