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Calculate NOAA GOES ADP covariates

Source: R/calculate_covariates.R
calculate_goes.Rd

Extract NOAA GOES Aerosol Detection Product (ADP) values at point locations from a SpatRaster returned by process_goes(). Returns a data.frame (or SpatVector / sf) containing locs_id, time, and the extracted variable column ({variable}_{radius}).

Usage

calculate_goes(
  from,
  locs,
  locs_id = NULL,
  radius = 0,
  fun = "mean",
  weights = NULL,
  .by_time = NULL,
  geom = FALSE,
  ...
)

Arguments

from

SpatRaster(1). Output from process_goes().

locs

data.frame, character file path, SpatVector, or sf object with point locations.

locs_id

character(1). Column name for unique location identifier.

radius

integer(1). Circular buffer radius in metres around each site (default 0 = point extraction).

fun

character(1). Summary function for buffered extractions (default "mean").

weights

NULL, SpatRaster, polygon SpatVector/sf, or file path. Optional weights raster for weighted extraction. If NULL (default), unweighted extraction is performed.

.by_time

NULL or character(1). Optional time grouping key used with .by_time for temporal summaries.

geom

FALSE/"sf"/"terra". Return geometry with results. Default FALSE. The CRS is inherited from from.

...

Placeholders.

Value

a data.frame or SpatVector object.

See also

process_goes

Author

Mitchell Manware

Examples

## NOTE: Example is wrapped in `\dontrun{}` as function requires downloaded
##       and processed data.
if (FALSE) { # \dontrun{
loc <- data.frame(id = "001", lon = -95.0, lat = 34.5)
calculate_goes(
  from = goes,  # derived from process_goes() example
  locs = loc,
  locs_id = "id",
  radius = 0,
  fun = "mean"
)
} # }