Hi,

I am currently trying to match my area data for each cell in a raster to the 
population of each cell to calculate the density.  When I run the crop function 
to get the specific state data that I want I have significantly more rows/cells 
of data than when I run my extract function to get the populations given.  
Since they aren’t the same size I can’t join them together.  I’m thinking maybe 
I have some NA data or extra points when I run my crop but i’m not sure how to 
check. Any help would be greatly appreciated.

These are the crop and extract functions I am running:
state_crop <- crop(pop_world_2015, states, df = TRUE)
state_pop_15 <- extract(pop_world_2015, states, df= TRUE)

This is how i’m calculating the area:
state_area <- raster::area(state_crop)

Thanks, Alex Fitz
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