I have got about 20,000 lat-long data and a map with 6,000 polygons. Both datasets have no common identification variable and I need to overlay the 20,000 participants over the area map. And, then clip out each participant based on the area they fall and give the area polygon to run the statistical analysis I am looking forward.
I tried to do it in ArcMap; however, I found it very tedious and time-consuming. Is there any effective method to clip out and give a common identification variable (the area ID will be given to individual participants)?