Generate spatio-temporal cross-validation index with spatialsample::spatial_block_cv and year-based temporal folds

This function generates spatio-temporal cross-validation indices with v spatial blocks and year-based temporal folds. The spatial blocks are generated with spatialsample::spatial_block_cv function, and the temporal folds are generated based on the years availble in data$time. Total number of folds is equal to v * length(unique(substr(data$time, 1, 4))).

Usage

generate_cv_index_spt(
  data,
  locs_id = "site_id",
  coords = c("lon", "lat"),
  v = 10L,
  time_id = "time",
  ...
)

Arguments

data

data.table or data.frame with id, coords, and time columns.

locs_id

The column name in data that represents the location identifier.

coords

The column names in the spatial object that represent the XY coordinates. Default is c("lon", "lat").

v

integer(1). The number of partitions for the resampling.

time_id

The column name in data that represents the time values.

...

Additional arguments to be passed to spatialsample::spatial_block_cv.

See also

spatialsample::spatial_block_cv