Okay this is a simple question, that after all these years I should have got in my head, but obviously not. I thought it was somewhere in the wiki or thbook, but I cannot find it now. When drawing walls should the yellow 'tick' be on the inside or out? Possibly more important, does it make a difference, all me pdfs are fine, but I have a problem with the kml. Which leads to a question when is a space between passages a pillar? If this 'pillar' is defined over many survey trips and multiple scraps, is the only solution to use -outline in option? Which leads to a further question, what happens if I would like to produce output with one of the passages not included, ie not publish the picture to the whole world before giving a lecture at a conference. The scenario is illustrated by the 2 attached images. The model shows what it should look like, the other is the kml on google earth with the passage on the right missing. Is the only way to get this to work as a kml, to define all the inside walls as outline in? thanks in advance for the help Andrew PS If anyone is interested, all the help received has produced this output (8Mb) http://www.ubss.org.uk/resources/surveys/survex/Charterhouse.lox Lots of the 'smearing' is from made up surveys, constructed from old plans. More project information available on http://www.ubss.org.uk/cave_survey_archive.php
