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 What is a Surfer viewshed? Add an attribute (like ZLEVEL) to all objects in a Surfer base layer How can I change the decimal separator from a period (.) to a comma (,) or vice versa in Surfer? Create a viewshed map in Surfer Create a NoData Polygon or BLN file in Surfer Comments 0 comments Please sign in to leave a comment.