Thank-you for your quick reply.
I'm just learning Octane for Houdini so need a quickstart or an example hip(nc) file to study because I am having no success at all and there is nothing in the manual about this.
I'm just using a sphere created elsewhere with UVs but no materials and for the life of me I can't get an octane shader to work.
I tried to follow these posts from a few years ago but with no success: https://render.otoy.com/forum/viewtopic.php?f=101&t=60717
Even pictures of the networks would help.
Thanks again for your assistance.