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? Create a viewshed map in Surfer Add an attribute (like ZLEVEL) to all objects in a Surfer base layer Create a NoData Polygon or BLN file in Surfer How can I convert a MATLAB colormap to a Surfer colormap? Comments 0 comments Please sign in to leave a comment.