Walls help: GPS fix coordinates must be referenced in cave?

Techniques, equipment and issues. Also visit the NSS Survey & Cartography Section.

Moderator: Moderators

Walls help: GPS fix coordinates must be referenced in cave?

Postby flightfollowing » Mar 9, 2015 6:50 pm

I am new to walls and trying to tie GPS coordinates outside the cave, to the cave entrance. Walls appears to support georeferencing of the cave component to GPS coordinates only if the GPS station fix is directly referenced in the cave segment, as in the tutorial file included with walls. If the GPS coordinates lie beyond the cave and one tried to connect the gps coordinates via a surface survey or intermediate segment, the compilation seems to fail. I can get around this by including the GPS station fix in the cave segment, but then the surface segment is included in the cave segment, which is not correct. Anyone have suggestions?
flightfollowing
Infrequent Poster
 
Posts: 16
Joined: Feb 2, 2015 8:48 pm
Name: Cliff Gill
NSS #: 66346
Primary Grotto Affiliation: kcag
  

Re: Walls help: GPS fix coordinates must be referenced in ca

Postby caver.adam » Mar 10, 2015 8:10 am

Sorry, I don't have enough experience in Walls. Heck, I don't have enough in the one I use either other than to guess randomly until I get it right.

This document doesn't get into much detail http://www.cavediggers.com/walls32.pdf, but it has some things they've done. I'm curious whether there is an issues with the #segment that you are in, with the way you're entering GPS, or something else.

Best of luck.
User avatar
caver.adam
NSS Hall Of Fame Poster
 
Posts: 345
Joined: Feb 8, 2012 12:26 pm
Primary Grotto Affiliation: Louisville Grotto
  


Return to Survey and Cartography Forum

Who is online

Users browsing this forum: No registered users