color_from_coords: Sample colors from images based on coordinates
In FranzKrah/rCSBI: Sample color points from (biological) images

Description Usage Arguments Value Examples

Sample colors from images based on coordinates

1 2	color_from_coords(coord, x, col.space = c("RGB", "HSL", "HSV", "HSI", "sRGB", "YUV", "Lab", "XYZ"))

`coord`	data.frame with x (column 1) and y (column 2) coordinates for N samples. Usually the output of coords_from_image
`x`	is of class cimg
`col.space`	character, one of "HSL", "HSV", "HSI", "sRGB", "YUV", "Lab", "XYZ" of the putput color space model
`pg`	logical if all values inside a polygone should be returned. In this case the points drawn are the vertices of the polygon.

list with three elements

points color values of points

polygon color values within the polygon spanned by the points

background color values no covered by the polygon

#' a.m <- load.image("https://upload.wikimedia.org/wikipedia/commons/0/02/2006-10-25_Amanita_muscaria_crop.jpg")
xy <- coords_from_image(a.m, n = 2)
col <- color_from_coords(coord = xy, x = a.m, col.space = "HSL")
col