Viewshed function does not seem to use vertices from polyline as documented

Discussion created by willem85 on Apr 27, 2014
Latest reply on Apr 28, 2014 by xuguang_wang-esristaff
I'm having some problems with the viewshed function in ArcGIS 10.1 and 10.2. According to the tool description and help file, it uses both nodes and vertices as observer points: http://resources.arcgis.com/en/help/main/10.1/index.html#//009z000000v8000000

In the output I got, I have the strong feeling only nodes are being used as observer points. To illustrate this I attached the result that I got (the viewshed was run for the selected polyline). Am I misunderstanding the help, am I not using the correct settings, or is this a bug in the software?

Thanks already for your kind help!