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Calculate Cropscape covariates

Source: R/calculate_covariates.R
calculate_cropscape.Rd

Extract Cropscape (CDL) values at point locations. Returns a data.frame object containing locs_id and crop specific cell fractions.

Usage

calculate_cropscape(
  from,
  locs,
  locs_id = "site_id",
  radius = 0,
  geom = FALSE,
  ...
)

Arguments

from

SpatRaster(1). Output from process_cropscape().

locs

data.frame. character to file path, SpatVector, or sf object.

locs_id

character(1). Column within locations CSV file containing identifier for each unique coordinate location.

radius

integer(1). Circular buffer distance around site locations. (Default = 0).

geom

FALSE/"sf"/"terra".. Should the function return with geometry? Default is FALSE, options with geometry are "sf" or "terra". The coordinate reference system of the sf or SpatVector is that of from.

...

Placeholders.

Value

a data.frame or SpatVector object

See also

process_cropscape()

Author

Insang Song

Examples

## NOTE: Example is wrapped in `\dontrun{}` as function requires a large
##       amount of data which is not included in the package.
if (FALSE) { # \dontrun{
loc <- data.frame(id = "001", lon = -78.90, lat = 35.97)
calculate_cropscape(
  from = cropscape, # derived from process_cropscape() example
  locs = loc,
  locs_id = "id",
  radius = 0,
  geom = FALSE
)
} # }