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Smooth a bathymetric or elevation raster

Source: R/prepare.R
smooth_bathy.Rd

Applies a square moving-window mean filter.

Usage

smooth_bathy(x, window = 3, na.rm = TRUE, filename = "", overwrite = FALSE)

Arguments

x

A raster-like object accepted by as_bathy().

window

Odd integer focal-window size.

na.rm

Logical. Remove missing values inside the focal window.

filename

Optional output raster path.

overwrite

Logical. Allow overwriting filename.

Value

A terra::SpatRaster.

Details

Smoothing changes local gradients and can strongly affect slope, curvature, rugosity, TPI, and BPI. Use it deliberately and report the window size.

See also

prepare_bathy()

Examples

bathy <- read_bathy(blueterra_example("bathy"))
smooth_bathy(bathy, window = 3)
#> class       : SpatRaster
#> size        : 90, 190, 1  (nrow, ncol, nlyr)
#> resolution  : 19.98372, 19.98372  (x, y)
#> extent      : 134960.3, 138757.2, 204151.7, 205950.2  (xmin, xmax, ymin, ymax)
#> coord. ref. : NAD83 / Puerto Rico & Virgin Is. (EPSG:32161)
#> source(s)   : memory
#> varname     : laparguera_slope_bathy
#> name        :     bathy_m
#> min value   : -420.895859
#> max value   :  -15.948482