Utility function to intersect point based observational data with Geospatial data values. This will take a data frame and append a new column to it.
npn_merge_geo_data(ras, col_label, df)Raster containing geospatial data
The name of the column to append to the data frame
The data frame which to append the new column of geospatial point values. For this function to work, df must contain two columns: "longitude", and "latitude"
The data frame, now appended with a new column for geospatial data numeric values.