HowTo: Cavern output in feet

[Bill Gee]

Hi Wookey  -

Thanks!   I suspected there was no option to display the output in feet.  It 
should be a simple change, so yes - let's add it to the wish list for a future 
version.  I assume cavern is converting feet to meters internally.  Converting 
back should be easy.

Regarding the vertical length - I assumed this was the case.  The resulting 
total is not terribly useful.  Thanks for the explanation.

Now that I have used Survex for a few hours, I find that Therion/Loch is much 
more useful.  For one thing, the .3d file that cavern produces is highly 
distorted for reasons I have not yet figured out.  It bears no relation 
whatever to the real shape of the cave.

The one useful thing I get from Survex is the warnings about clino-backclino 
and compass-backcompass readings that are out of spec.  This led me to a 
number of data entry errors in the centerline which I have now corrected.

Regards - Bill Gee


On Tuesday, March 03, 2015 15:27:19 Wookey wrote:
> +++ Bill Gee [2015-03-03 08:30 -0600]:
> > I don't see any directive or command line option that specifies the output
> > to be in feet.  Is there a way to do it?
> 
> Not so far as I know. Perhaps this is one reason we don't have many US users
> :-)
> 
> This probably deserves a wishlist bug. Would you want the error file output
> to be changed too (I assume so).
> > Also - What does it mean by "Total vertical length of survey shots"?  This
> > cave is nearly horizontal.  It certainly does not extend through 100
> > meters of vertical distance.
> 
> It adds up all the vertical elements of all the shots; (not generally a
> very useful number). Even if the cave is mostly horizontal many of the
> legs will be slightly up or down and that will all add up. e.g if each
> leg went up or down by 10cm, then a 1000 shots survey would have a
> "Total vertical length of survey shots" of 100m.
> 
> >  The vertical range of ~13 meters is probably accurate.
> 
> Right, but that's a different number (max vertical range from highest to
> lowest point).
> 
> Wookey