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 email@example.com. Updated August 31, 2020 Related articles How can I change the number of decimal digits when digitizing in Surfer? Put a contour label at a specific place on a contour line in Surfer Comments 0 comments Please sign in to leave a comment.