Re: Edited, Final & Leg data

Peter MATTHEWS wrote:
> Final Data - Corrected and Uncorrected
> ==========
> The input data which is currently the accepted final version of
> individual Shots or other measured data: Final Corrected if systematic
> instrument corrections have also been applied, Final Uncorrected if
> systematic instrument corrections exist but have not yet been applied.
> Comments:
> 1. This data is approved as now suitable for data reduction, but may or
> may not be ready for input to any particular survey reduction program
> depending on the program and what it can accept as input data.

We are half way through a list of possible classes of things we might say about a data set and the current classification is called final? I still don't get this. What is 'final' about it? The concept as defined makes sense, the choice of terms doesn't.

 > Final Corrected if systematic
 > instrument corrections have also been applied, Final Uncorrected if
 > systematic instrument corrections exist but have not yet been applied.
 > Comments:
 > 1. This data is approved as now suitable for data reduction, but may or
 > may not be ready for input to any particular survey reduction program
 > depending on the program and what it can accept as input data.

You left out this combination in the above definition: What do you call data that has been declared as the official approved numbers when no instrument corrections exist? Would this be called simply "final". Is the idea that when I have finished editing I should call the data "final", lets say this is set A. If I then go on to mess with the data to close the loops, so now in addition to data in set A, I have data in set B, therefore I need to now label Set A as "final uncorrected" and set B as "final corrected" in order to differentiate the two.

Your Leg Data definition suffers from the same problem of data in three states, but do you really want three possible choices or just two? You have two possible states if you drop the words "exist but" from both definitions.

> Leg Data - Corrected and Uncorrected
> ========
> Final Data which provides only a single set of the necessary
> Measurements for each Leg, possibly by consolidation of several sets of
> final Shot data: Leg Corrected if systematic instrument corrections have
> also been applied, Leg Uncorrected if systematic instrument corrections
> exist but have not yet been applied.

What is a leg? Is this the right term used by land surveyors? Is a leg a set of shots between intersections? In a simple linear cave can I have two or more legs? Is there an order to legs required by CaveXML or does that come later or as a refinement or attribute of a leg?

-Paul Received on Mon Feb 10 18:21:00 2003