I have a set of points (roughly 500,000 houses), and I would like to compute how many other points (sea buoys) are within a radius of each house. The search radius for each house is its distance to the horizon based on its elevation, so the search radius is not fixed (as with other tools) and is different for each house.
Is there a tool/method which would give an output of how many sea buoys are within the distance to the horizon of each house. so a column for house ID's and a column for number of sea buoys within its distance to horizon (I have already generated dist_horizon for each house).
I am using Arcmap 10.3 and I have a license for all tools as far as I know.