I am working on a wind farm proposal. I have the positions of 70 proposed turbines. I also have the positions of 80 houses within 20km of the proposed turbines. I created a viewshed for the 70 turbines, and was able to determine which parts of the surrounding landscape would be able to see at least one turbine. The viewshed has also told me how many turbines are visible from each pixel in the raster. Based on the position of the house, I have determined how many turbines are visible from each house.
But now I'd like to take it a step further. I would like to determine which specific turbines are visible from each house.
I have two ideas, both of which involve a lot of labor. (1) Create a viewshed for each house individually. Record the specific turbines visible from each house. This will involve creating 80 individual viewsheds - too many. (2) Use the "Create line of site tool" between each house and each turbine. This will involve 80 x 70 = 5600 individual calculations - too many.
There must be a quicker way to do this. I have ArcGIS 10.0 with 3D analyst activated.