Return bounding box for data frame. The data must contain two columns that
contains coordinates. Rows with NA in coordinates will be removed.
Usage
sporeg_bbox(x, lat = "POSITIONN", lon = "POSITIONE", buffer = 0.05)
Arguments
- x
Data frame containing coordinates
- lat
character Column name or number containing latitude. Default "POSITIONN"
- lon
character Column name or number containing longitude. Default "POSITIONE"
- buffer
numeric the amount to buffer the map in all directions (default = .05)
Value
Returns a bounding box as a vector of four named numbers. The numbers are named:
"left", "bottom", "right", and "top". This is the format used by ggmap::get_map()
