I have two layers: 1) [Polygon] city blocks, and 2) [Point] the city center. The City blocks layer has 110,681 records. And The city center layer has just one record because there is only one city center in this city.
The code above selects census blocks that are 1 kilometer away from the city center in ArcMap.
Now, I have to add a field called "ring" onto the city blocks layer. And, I have to write a code that does:
ring = 1 if city blocks are 1km away from the city center. ring = 2 if city blocks are in the ring of 1km to 2km from the city center. ring = 3 if city blocks are in the ring of 2km to 3km from the city center. ... It stops if there are no city blocks in the ring of (N-1)km to (N)km from the center.
How do we write a code for that selection process using arcpy?
Thanks a ton in advance!