*SD command?

Richard Knapp richard.f.knapp at gmail.com
Mon Jan 20 10:43:44 GMT 2025


Good Morning (here)!

In our survey, we have used a DistoX for the main line to the current back of the cave. Many of the side surveys are compass and tape. I would like to weight the DistoX data as more accurate than the compass and tape data. 

Do I need to include an *SD in the DistoX surveys?
The tape measurements are within .1’ (.03m) but I would est the compass readings +/- 0.5 or 1 degree. Inclinometer should be +/- 0.25 degree.
Would I put the following SD command in the data file?

	*SD COMPASS 0.5 degrees
	*SD BACKCOMPASS 0.5 degrees
	*SD CLINO 0.25 degrees
	*SD BACKCLINO 0.25 degrees

?

Do these values seem reasonable?

Would I also need to add *SD commands to the DistoX surveys?

Thank you for your help.

Aside, I really enjoy the simplicity and power of Survex. Want to get into more of the options at some point including better use of the BEGIN/END commands but too far along in this project to rework all the data.

Richard Knapp
Richard.F.Knapp at gmail.com




More information about the Survex mailing list