viewshed RADIUS2 On or Off produce different results

Discussion created by on May 2, 2013
Hi all

Having strange results when I add RADIUS2 column to the point data.  I would expect the only difference would result in changes at the edge of the radius distance from the points, however the results appear slightly different when on or off within the whole area. 

All the other parameters are the same as i have run the viewshed tool from the previous results data and only changed added the RADIUS2 column(and the output location).

Does anyone have any suggestions as to why this occurs?

Many thanks