npn_check_point_cached {rnpn} | R Documentation |
Checks in the global variable "point values" to see if the exact data point being requested has already been asked for and returns the value if it's already saved.
npn_check_point_cached(layer, lat, long, date)
layer |
The name of the queried layer. |
lat |
The latitude of the queried point. |
long |
The longitude of the queried point. |
date |
The queried date. |
The numeric value of the cell located at the specified coordinates and date if the value has been queried, otherwise NULL.