Hi therion users, One of my friends has asked me whether it’s possible to colour an elevation survey by a blended gradient rather than a discrete scrap by scrap basis. I thought about it, but I don’t have the expertise in metapost, would it be possible to metapost a gradient which is predefined one colour through the normal rainbow of therion colours to the final colour and then bound this by the top and bottom of the cave. Then insert this gradient as a fill cave fg user. Just a thought? I know John Stevens has some good success with the Agen allwedd survey in South Wales (uk) but I think his solution relied upon the 1 colour for one scrap method, though my memory could be wrong. Regards, Alastair Gott, Alastairgott@hotmail.com Sent from my iPhone