I am using ArcGIS 10.3.1. I have two layers: buildings (points) and plots (polygons). I need to calculate how close are the building one to another. I used the function "Point Density" and it gave me all the distances from one building to all other buildings. I need only the distance from each building to the nearest building. I tried to use the tool Near but it calculates only 0 when I indicate the buildings as the Input feature and Near feature. What are other possible solutions?