[Therion] Length & Depth differ

[Bruce]

Has anyone noticed that cave lengths and depths reported by the textual
(survey-list and cave-list) exports sometimes differ from the length and
depth reported by the map (pdf) export, even when all these outputs are
produced with the same thconfig run?

 

I have tracked the one case I have noticed down to a particular survey (I
think) that is being counted in the textual outputs but not in the map
output (45m out of 11.5km).  At least this explains the length discrepancy.
Survey stations for the 'missing' survey are included in one of the scraps,
and are plotted in the output, so I would think it's length should be
counted.

 

The depth discrepancy is more perplexing, because this particular survey is
halfway between the top and bottom of the cave (in a side passage), and so
of course should have no effect on the overall depth.

 

It is possible that the length of the survey is co-incidentally the same as
the discrepancy, and there is something else going on.  If the cause is as I
have described then it will probably have been present in this dataset for
the last couple of years.  I do recall being perplexed by differing figures
in the distant past, but put it in the 'things to do' basket.

 

Any ideas?

 

Regards

Bruce

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