On 07/09/10 10:38, Bruce wrote: > 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? >
Further to my above post and Andrew Atkinsons recent posts... I do not have any Survex data, so cannot test that aspect, but I do have Survex installed, and I have investigated a little further using both loop closure types within Therion. As can be expected there is a slight difference between Therion loop closure and Survex loop closure in reported length, depth and range statistics, demonstrated in the attached file. These values are, as far as I can tell, exactly mimicked by the 'surveys' and 'caves' list outputs. So, the compiler reported values match the list outputs for my test case. (I presume the lists always report on the whole survey, not just the exported map -untested). The pdf plan and elevation outputs often report slightly different values to the list outputs(45m in length) in my test case. I have figured out that (logically enough) the figures reported in the pdfs reflect the map definitions that are exported. If you have a 100km survey, but export a map definition of a 50m portion, then you would only want the pdf to report 50m, and not 100km. Do you think this correct? My confusion arises when I think the maps I am exporting contain all of the surveyed passage, but the lengths reported are less than in the lists. (I tried commenting out all my select statements, expecting that all of the defined maps would be exported, but I was surprised to find this was not necessarily the case - but perhaps this is a yet another issue perhaps) Perhaps my 'length difference' issue is unrelated to what Andrew is experiencing or perhaps not? Bruce -------------- next part -------------- An embedded and charset-unspecified text was scrubbed... Name: Compiler Survey Info window therion and Survex loop closure comparison.txt URL: <http://mailman.speleo.sk/pipermail/therion/attachments/20100914/2b47f22a/attachment.txt>
