See coordinates vector in raster

Dear all,

Is there any way to access the vector containing the longitude and latitude coordinates of a raster object? For example:


library(raster)
r1 <- raster(nrows=800, ncols=820, xmn=0, xmx=10)

# I am looking for something like this:
r1$lon
r2$lat

Thanks in advance,

Thiago.