[Therion] Sketches on doesn't work / legacy survey

[Bruce Mutton]

Roger

Your ‘artifacts’ are actually the passage lrud dimensions being plotted as instructed.

Here they are with a bit of colour.  You see, there is your image, stations, short stubs of centreline, and solid trapezoid passage shape based on lrud.



BTW, I do think the fact that the passage trapezoids, the background images, and the scrap drawings all plot in the same pdf layer is undesirable.

The user viewing the output file cannot then isolate these components of the output, as they can with previews and surface images.



Anyway, back to Roger’s example.

 

A tidy way to suppress the passage centreline trapezoids is to put a ‘walls off’ statement in your th file.  ie

 

    walls off # walls off will hide the lrud passage shading

    data  normal  from  to    length  compass clino

    etc

 

And yes, I see now, symbol-hide group cave-centerline will cause an error, because there is then no scrap to draw (Therion must have at least a scrap or a centreline to draw – seems that scrap station points and images don’t count).

 

Here is what happens if a random scrap passage wall is drawn and walls is off, and the centreline is not hidden.

There is your image, stations, short stubs of centreline ONLY inside the scrap, and no solid trapezoid passage shape.



Now, if ‘symbol-hide group cave-centreline’ is invoked, it works perfectly, even though I appreciate it is not what you want.

Here is your image, no stations, no short stubs of centreline, and no solid trapezoid passage shape. But there IS the scrap passage drawing.

 



 

Hope that helps.

Bruce

 

 

 

From: Therion <therion-bounces at speleo.sk> On Behalf Of Roger Schuster
Sent: Saturday, 18 April 2020 07:12
To: therion at speleo.sk
Subject: Re: [Therion] Sketches on doesn't work / legacy survey

 

Hello cavers,

finally I got it working and now I also can provide a complete example:

 <https://send.firefox.com/download/68dbfd56e60e2b2c/#iSkNt75QW2_8tIZeDCD9qQ> <https://send.firefox.com/download/68dbfd56e60e2b2c/#iSkNt75QW2_8tIZeDCD9qQ>

(link will expire in seven days).

To avoid the white artifact (see file kolkhoehle_artifact.pdf) it is necessary not to hide the survey stations! As soon as you use either the attribute -visibility off or use symbol-hide point station in your layout you will have a white trapezoid on the final pdf map. Only hiding the survey line is possible. As long as the stations are visible the resulting map is fine (see kolkhoehle_ok.pdf). Btw. symbol-hide group cave-centerline causes an error.

Regards,

Roger

Am 13.04.2020 um 11:20 schrieb Roger Schuster:

Hello cavers, 

 

currently I try to work with some legacy survey which are the original survey data and the final map with scale bar but without marked stations. My intention is to geo-reference the existing map (i.e. attaching the entrance location to the UTM grid) and use it in a cave atlas of the area. I don't want to redraw the whole map in Therion. 

 

I followed the directions given in the therion wiki and entered the survey data and the resulting model in Loch looks fine and plausible. After that I created a scrap with the scanned map (projection plan) and scaled it using the scale bar and the scaling tool of Xtherion map editor. I marked the location of the first survey station at the cave entrance and in the layout section of my thconfig I turned on sketch export. Unfortunately it doesn't work. The generated pdf only contains the map header (with wrong length and depth statistics btw!) and a short part of the first survey shot. I expect the whole scanned background image to be visible and in scale in the pdf. Honestly said I never got the "sketches on" working with any of my old and new maps. What I am doing wrong? Any pointer to the right direction is highly appreciated. 

 

Best regards and thanks in advance,

 

Roger 





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