terra-migration: Get min or maximum value of a (Spat)Raster

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Get min or maximum value of a (Spat)Raster

Description

During the transition from raster to terra, some functions are not drop in replacements, such as minValue and maxValue became terra::minmax. This helper allows one function to be used, which calls the correct max or min function, depending on whether the object is a Raster or SpatRaster.

Usage

minFn(x)

maxFn(x)

dataType2(x, ...)

nlayers2(x)

values2(x, ...)

Arguments

x	A Raster or SpatRaster object.
...	Passed to the functions in raster or terra, as needed.

Value

A vector (not matrix as in terra::minmax) with the minimum or maximum value on the Raster or SpatRaster, one value per layer.

Examples

if (requireNamespace("terra", quietly = TRUE)) {
  ras <- terra::rast(terra::ext(0, 10, 0, 10), vals = 1:100)
  maxFn(ras)
  minFn(ras)
}

reproducible documentation built on June 22, 2024, 10:18 a.m.