raster_grid: Make raster grid
In Michael-Stevens-27/silverblaze: Geographic Profiling in R

Make raster grid

raster_grid(
  range_lon = c(-0.2, 0),
  range_lat = c(51.45, 51.55),
  cells_lon = 100,
  cells_lat = 100,
  guard_rail = 0.05
)

`range_lon`	min and max longitude
`range_lat`	min and max latitude
`cells_lon`	number of cells in longitude direction
`cells_lat`	number of cells in latitude direction
`guard_rail`	Extend each lon lat range by a proportion of the length of said range. E.g. a guard_rail of 0.05 increases the lon and lat range by 5 percent.