[Therion] Spikes and shadow passage in Loch output

[Stelios Zacharias]

Dear all,

I have some artefacts appearing in my loch output of a cave I am 
working on. I have attached the lox file zipped.

The cave is split into two scraps, although I do not think this is 
causing the problem. The first difficulty is the appearance of a 
shadow passage, in the south and west of the diagram. The passage 
should be in the blue zone for depth, but there is a high echo and a 
sloping line unconnected to either the high echo or the actual 
passage. The scrap border is at the meeting point of the three.

The other problem concerns spikes either upwards or downwards which 
appear usually in chambers. Two examples of this might be seen at the 
far eastern end of the survey.

If the .th and .th2 files are needed for investigation, I would be 
happy to send them.

I look forward to any hints that might be shared.

Thanks,
Stelios Zacharias


Stelios Zacharias
SELAS Caving Club
Pasionos 44-46
Athens - 116 31
Greece

www.selas.org

Skype: stelzac          
-------------- next part --------------
A non-text attachment was scrubbed...
Name: cave.zip
Type: application/octet-stream
Size: 96978 bytes
Desc: not available
URL: <http://mailman.speleo.sk/pipermail/therion/attachments/20071116/4c5ec9b9/attachment.obj>