| Library: | graphic |
| See also: | transform |
| Quantlet: | groupcol | |
| Description: | Decomposes a (color) vector into single groups. |
| Usage: | {g, gind} = groupcol (col, ncol) | |
| Input: | ||
| col | scalar or color vector | |
| ncol | scalar, expected length of colorvector | |
| Output: | ||
| gcol | m x 1, different colors | |
| gind | n x 1, index of groups | |
; loads the library graphic
library("graphic")
; generate a color vector, e.g. for swiss banknote
col = matrix(5)|(4*matrix(5))
; computes the different colors
{gcol, gind} = groupcol(col, 10)
; show the different colors
gcol
; show the index vector(5 ones and 5 twos)
gind
decomposition of the color vector: Contents of gcol [1,] 1 [2,] 4 Contents of gind [ 1,] 1 [ 2,] 1 [ 3,] 1 [ 4,] 1 [ 5,] 1 [ 6,] 2 [ 7,] 2 [ 8,] 2 [ 9,] 2 [10,] 2