im.plotRGB.auto: Automatically Plot a Raster Image as an RGB Composite

In imageRy: Modify and Share Images

Automatically Plot a Raster Image as an RGB Composite

Description

This function visualizes a multispectral raster image using the first three bands as an RGB composite. It applies a linear contrast stretch to enhance visualization.

Usage

im.plotRGB.auto(x, title = "Main")

Arguments

x	A 'SpatRaster' object representing the input multispectral image.
title	A character string specifying the plot title (default: "Main").

Details

- The function assumes that the **first three bands** of the raster correspond to the Red, Green, and Blue channels. - It uses 'plotRGB()' with 'stretch="lin"' to enhance contrast. - The plot title is customizable via the 'title' parameter. - The axis and label colors are set to white for better contrast with dark backgrounds.

Value

This function does not return an object. It directly generates a plot.

See Also

[im.import()], [im.ggplot()]

Examples

library(terra)

# Create a 3-band raster with random values
r <- rast(nrows = 10, ncols = 10, nlyrs = 3)
values(r) <- runif(ncell(r) * 3)

# Plot RGB composite
im.plotRGB.auto(r, title = "RGB Visualization")

imageRy documentation built on Aug. 8, 2025, 7:31 p.m.