| npn_get_point_data {rnpn} | R Documentation |
Get Point Data Value
Description
This function can get point data about any of the NPN geospatial layers.
Usage
npn_get_point_data(layer, lat, long, date, store_data = TRUE)
Arguments
layer |
The coverage id (machine name) of the layer for which to retrieve. Applicable values can be found via the npn_get_layer_details() function under the 'name' column. |
lat |
The latitude of the point. |
long |
The longitude of the point. |
date |
The date for which to get a value. |
store_data |
Boolean value. If set TRUE then the value retrieved will be stored in a global variable named point_values for later use. |
Details
Please note that this function pulls this from the NPN's WCS service so the data may not be totally precise. If you need precise AGDD values try using the npn_get_agdd_point_data function.
Value
Returns a numeric value for any NPN geospatial data layer at the specified lat/long/date. If no value can be retrieved, then -9999 is returned.