Takes the mean of raster values in an area, ignoring any missing values.
Usage
augment_epi_units_with_raster(
epi_units,
raster,
risk_name = "raster_risk",
aggregate_fun = c("mean", "max", "min", "sum")
)
Arguments
- epi_units
polygon data, usually epidemiologcal units (EU).
- raster
raster data to take the aggregate of each polygon in p.
- risk_name
name of new column containing aggregated raster values
- aggregate_fun
function to use to aggregate raster values over
epi units area, default is mean.
Value
returns the polygon data (sf) with a new column containing the
aggregated values from the raster data for each polygon.