This question seeks to clarify a point made in an answer to ArcGIS Viewshed without Observer Points, which states:
I'm fairly sure that the number of points [Viewshed] generates along the line depends on the DEM resolution; for example, if you've got a 100m line and a raster with 10m cells, your line will be analyzed as 10 points.
Can anyone confirm this is true in ArcGIS Pro? I have a DEM raster of 30-meter cell size, and a polyline observer feature that is quite long (a 463 kilometer boundary line to be precise.) I'm getting a maximum of 279 observers. When you work out the math that would mean ≤2% of the boundary can "see" any given cell. It seems too low.
(Specifically I'm looking to convert the number of observers into the percentage of the boundary.)