Do Surfer viewsheds account for the curvature of the earth? Follow The viewshed layers in Surfer currently do not account for the curvature of the Earth. If you would like this feature, please contact firstname.lastname@example.org. Updated October 22, 2018 Related articles What is a Surfer viewshed? How can I create a viewshed in Surfer? Create a NoData Polygon or BLN file in Surfer How can I convert a MATLAB colormap to a Surfer colormap? Add an attribute (like ZLEVEL) to all objects in my Surfer base layer Comments 0 comments Please sign in to leave a comment.