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Buffer vs Near

Question asked by ballshouse on Sep 22, 2015
Latest reply on Sep 23, 2015 by jsoucekarcdata-cz-esridist

I have created a dissolved buffer of 150 feet around a points from dataset A and want to know how many instances where points in dataset B fall inside that buffer. So, I did a "Join data from another layer based on spatial location" to get a sum of 123 instances where points of B are within 150 feet of a point in A. I then used the Near tool to calculate the nearest point in dataset A to each point in dataset B, limiting the search radius to 150 feet. I only get 94 instances where the nearest A feature is within 150 feet of B. I thought that maybe this was due to working in a GCS and switched to the State Plane for my region and got the same outcome. Below demonstrates a location where the blue points (B) within the buffer are counted but the purple points (B) are the only ones found using Near with a search radius the same as the buffer.

 

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