amadeus (version 1.2.2)

process_flatten_sds: Process MODIS layers

Description

Aggregate layers in a sub-dataset in sinusoidal MODIS products.

Some MODIS products consist of multi-layer subdatasets. This function aggregates multiple layers into single layer SpatRaster. fun_agg is applied at overlapping cells.

Usage

process_flatten_sds(path = NULL, subdataset = NULL, fun_agg = "mean", ...)

Value

a SpatRaster object

Arguments

path

character(1). Full path to MODIS HDF4/HDF5 file. Direct sub-dataset access is supported, for example, HDF4_EOS:EOS_GRID:{filename}:{base_grid_information}:{sub-dataset}

subdataset

character(1). Exact or regular expression filter of sub-dataset. See process_modis_sds for details.

fun_agg

character(1). Function name to aggregate layers. Should be acceptable to terra::tapp.

...

Placeholders.

Author

Insang Song

See Also

terra::tapp, terra::rast, terra::describe

Examples

## NOTE: Example is wrapped in `\dontrun{}` as function requires a large
##       amount of data which is not included in the package.
if (FALSE) {
mod09ga_flatten <- process_flatten_sds(
  path =
    list.files("./data", pattern = "MOD09GA.", full.names = TRUE)[1],
  subdataset = process_modis_sds("MOD09GA"),
  fun_agg = "mean"
)
}