Focal raster smooth with a median — hsi_smooth_median • HSItools

Focal raster smooth with a median

Usage

hsi_smooth_median(
  x,
  window = 3,
  cores = 1L,
  filename = "",
  overwrite = FALSE,
  ...
)

Arguments

x: A SpatRaster with hyperspectral data.
window: Positive odd integer. Focal window size. Default 3.
cores: Positive integer. Number of cores for parallel processing. Default 1L (single core). Passed to terra::focal().
filename: Character. Output filename. Default "" keeps result in memory.
overwrite: Logical. Overwrite existing file. Default FALSE.
...: Additional arguments passed to terra::writeRaster().

Value

A SpatRaster with median filtered values.

See also

Other HSI Transformations: hsi_apply_mnf(), hsi_calc_difference(), hsi_calc_mnf(), hsi_calc_ndi(), hsi_calc_raba(), hsi_calc_rabd(), hsi_calc_ratio(), hsi_calc_rcv(), hsi_calc_reflectance(), hsi_calc_remp(), hsi_calc_rmean(), hsi_calc_rmedian(), hsi_calc_rsd(), hsi_calc_stretch(), hsi_destripe(), hsi_remove_continuum(), hsi_smooth_savgol(), hsi_tiled(), hsi_write_scaled()

Examples

if (FALSE) { # \dontrun{
x <- terra::rast("REFLECTANCE_testdata.tif")

x_smooth_median <- hsi_smooth_median(x)

x_smooth_median <- hsi_smooth_median(
  x,
  filename = "output_median.tif",
  overwrite = TRUE
)
} # }