From: Richard Knapp (richfk_at_attglobal.net)
Date: Fri Jul 12 2002 - 12:24:39 CEST
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On Thu, 11 Jul 2002 20:43:58 -0400 (EDT), Lev Bishop wrote:
> Actually its not all that bizarre, really. If you were to solve the "full"
> survey problem, as a nonlinear maximum-likelihood estimation problem, then
> the only way is to (iteratively) solve for the corrected instrument...
Which reminds me of something: how should a station with multiple
locations be handled? This is something that pertains to stations in
loops (junctions).
In COMPASS, there was only one set of coordinates for each station.
You cannot see any error in the surveys with this method. I mentioned
it to Larry and he knows it is a limitation.
One thing I like about Karst (a looong time ago), was it showed all
the surveyed data as it was done, even if there was a loop. He showed
if a station should be the same point by drawing dark blue lines
connecting them until the loop was processed. You could easily see
which loops were close and which might be caca without doing any
extra calculations.
So how is CaveXML going to handle this? Is one location going to be
chosen - using some basis - over the others? Will the position be
averaged (Ick!)? Or are multiple locations going to be stored?
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