scale_layer: Scale in region of interest

In robitalec/wildcam: Camera Trap Monitoring For Estimating Wildlife Density

Scale in region of interest

Description

Helper function to scale a target layer in a region of interest. Can be used to compare locations with eval_pt() and eval_buffer(), and select locations based off of relative values instead of absolute values.

Usage

scale_layer(target, region, center = TRUE, scale = TRUE)

Arguments

target	SpatRaster target (see terra::rast())
region	object which can be passed to terra::ext() including sf, SpatRaster, and 2x2 matrices.
center	see terra::scale()
scale	see terra::scale()

Value

SpatRaster layer, cropped to extent of provided region, and scaled.

See Also

terra::scale()

Examples

# Load packages
library(terra)

# Load data
data("clearwater_lake_hydro")
clearwater_elev_path <- system.file(
  "extdata", "clearwater_lake_elevation.tif", package = "camtrapmonitoring")
clearwater_lake_elevation <- rast(clearwater_elev_path)

# Region of interest around Clearwater lake
roi <- clearwater_lake_hydro[4,]

# Scale elevation in extent of density grid
elev_scaled <- scale_layer(target = clearwater_lake_elevation, region = roi)

robitalec/wildcam documentation built on July 4, 2024, 1:55 a.m.