Duncan Price
Active member
A geologist caving friend is mapping the geology of Wookey Hole. Contrary to the reports of cave divers, Chamber 24 is virtually all formed in conglomerate. He's put together a map in some geological software that shows it but asked me yesterday if it was possible to get SURVEX to colour code the points - I know that you can colour code for depth (default), error etc. but wondered if anyone has a fix to generate colouring for rock type? Wookey Hole is formed in dolomitic conglomerate and limestone with exposure of tea green marl in the roof of Land of Hope & Glory. Nick has drafted a map based on geology, I've attached grabs of the survey coded for date and style (the data is mostly normal caving survey with some diving bits and the section from 24 to 25 is cartesian from digitizing John Cordingley's diving survey). I suppose I could frig the data by using spurious date settings to generate the four colours required (to include "not mapped") but this seems a bit of a pain as it would require going through all the surveys and manually editing them. Ideas welcome.