biplot_color {scone} | R Documentation |
This function implements biplot for prcomp
objects.
biplot_color( x, y, rank = TRUE, ties_method = c("max", "min", "first", "last", "random"), choices = 1:2, expand = 1, ... )
x |
|
y |
numeric. Quantitative values used to color the points. If rank is FALSE, all values must be positive integers and less than or equal to the length of y. |
rank |
logical. If TRUE (default) y will be transformed by the rank() function |
ties_method |
character. ties.method used by the rank() function |
choices |
numeric. 2 principal components to plot. Default to first two PCs. |
expand |
numeric. value used to adjust the spread of the arrows relative to the points. |
... |
arguments passed to plot. |
Invisibly returns scaled point coordinates used in plot.
mat <- matrix(rnorm(1000), ncol=10) colnames(mat) <- paste("X", 1:ncol(mat), sep="") pc <- prcomp(mat) biplot_color(pc, rank(pc$x[,1]))