sampleRGB: Interactive function to sample RGB value from pixel or square...

In patternize: Quantification of Color Pattern Variation

Interactive function to sample RGB value from pixel or square area in an image.

Description

Interactive function to sample RGB value from pixel or square area in an image.

Usage

sampleRGB(image, resampleFactor = NULL, crop = c(0, 0, 0, 0), type = "point")

Arguments

image	Image imported as a RasterStack.
resampleFactor	Integer for downsampling used by redRes.
crop	Vector c(xmin, xmax, ymin, ymax) that specifies the pixel coordinates to crop the original image.
type	Set 'point' to extract RGB from a single point or 'area' to extract from a square area defined by setting two points (default = 'point').

Value

RGB vector

Examples

image <- raster::stack(system.file("extdata", "BC0077.jpg", package = "patternize"))
RGB <- sampleRGB(image, resampleFactor = 1)

patternize documentation built on Aug. 22, 2023, 5:07 p.m.