mosaic_rotate: Rotate a mosaic image by specified angles
In pliman: Tools for Plant Image Analysis

mosaic_rotate

R Documentation

Rotate a mosaic image by specified angles

Description

This function rotates a mosaic image by 90, 180, or 270 degrees.

Usage

mosaic_rotate(mosaic, angle, direction = "clockwise")

Arguments

`mosaic`	A `SpatRaster` object representing the mosaic image.
`angle`	An integer specifying the rotation angle. Must be one of 90, 180, or 270.
`direction`	A string specifying the rotation direction. Must be either "clockwise" or "anticlockwise".

Value

A SpatRaster object with the rotated mosaic image.

Examples

if (interactive() && requireNamespace("EBImage")) {
library(pliman)
# Convert a mosaic raster to an Image object
mosaic <- mosaic_input(system.file("ex/elev.tif", package="terra"))
r90 <- mosaic_rotate(mosaic, 90)
r180 <- mosaic_rotate(mosaic, 180)
r270 <- mosaic_rotate(mosaic, 270)
# Plot all rotations side by side
par(mfrow = c(2, 2))
mosaic_plot(mosaic, main = "Original")
mosaic_plot(r90, main = "90 Degrees")
mosaic_plot(r180, main = "180 Degrees")
mosaic_plot(r270, main = "270 Degrees")
par(mfrow = c(1, 1))

}

pliman documentation built on Aug. 21, 2025, 5:46 p.m.