Survex extended elevation

jarvist

New member
Though for anything fairly serious you'll probably want to write a 'specfile' with a text editor full of *eswap station commands to fold the cave into a vaguely sensible shape.
Then, from a command line,
extend --specfile=cavename_spec.txt cavename.3d

Also, I've noticed that some versions of Aven crash with the resulting cavename_extend.3d file, if so trying updating your version of aven!
 

mandypoo

New member
Would anyone be able to send me a template of a specfile of something they've done previously?

I have a survey which has two alternative pitches to the same survey station below, but the default seems to plot the top common station as two separate points  :mad: I want the pitches to be connected at both top and bottom stations, but guess I'll have to fix this manually by trial and error?

If anyone has any suggestions, that would be much appreciated.

 

jarvist

New member
Hi Mandy,

Here's a fairly complex spec file for a 25km system with 5 entrances:
https://github.com/jarvist/migovecsurveydata/blob/master/migovecsurveydata/sysmig_vrtnarija_extend_spec_2012.dat

But yes, trial and error is order of the day. I think aven will refresh the .3d file automatically (if not, just reload from the 'recent' list in file), so you should be able to have a text editor open on the .spec file, and then a console open to run extend, and then view the new extended .3d.

If I understand your problem correct you should be able to fix this with a single *eswap one station along the branch.
 

mandypoo

New member
Thanks Jarv, took quite a bit more than one eswap but got there in the end after a bit of fudging :) Cheers for your help, much appreciated!
 
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