plot.nipals: Plot NIPALS basic results

In gastonstat/plsdepot: Partial Least Squares (PLS) Data Analysis Methods

Plot NIPALS basic results

Description

Plot method for objects of class "nipals". This function plots either the variables or the observations, on the selected components (i.e. scores). Variables are plotted inside the circle of correlations. Observations are plotted on a scatter plot.

Usage

  ## S3 method for class 'nipals'
 plot(x, what = "variables",
    comps = c(1, 2), cex = 1, col.labels = "#5592e3",
    pos = NULL, offset = 0.1, col.arrows = "#5b9cf255",
    lwd = 3.5, length = 0, angle = 0,
    col.points = "#5592e3", pch = 21, pt.bg = "#5b9cf255",
    show.names = FALSE, xpd = TRUE, xlab = NULL,
    ylab = NULL, main = NULL, col.main = "gray35",
    cex.main = 1.2, col.axis = "gray40", show.grid = TRUE,
    col.grid = "gray95", ...)

Arguments

x	An object of class "nipals".
what	What to plot. Options are "variables" and "observations"
comps	An integer vector of length two to indicate which components to plot
cex	Character expansion for labels and points.
col.labels	Color for labels of variables.
pos	Position for the labels text (see par).
offset	When pos is specified, this value gives the offset of the labels.
col.arrows	Color for the arrows when plotting variables.
lwd	The line width of arrows.
length	Length of the edges of the arrow head (in inches).
angle	Angle from the shaft of the arrow to the edge of the arrow head.
col.points	Color for the points when what="observations".
pch	Plotting character symbol to use (see par).
pt.bg	Background (fill) color for the points given by pch=21:25.
show.names	Logical indicating whether to show names of points. Only used when what="observations"
xpd	Logical for controlling clipping region of labels and names.
xlab	Title for the x axis.
ylab	Title for the y axis.
main	Main title of the plot.
col.main	Color of main title.
cex.main	Character expansion of main title.
col.axis	Color of axis annotations (tick marks and labels).
show.grid	Logical indicating whether to show grid lines.
col.grid	Color of grid lines. Only used when show.grid=TRUE.
...	Further arguments are passed to labels or points.

Details

Variables are displayed using the correlations in $cor.xt.

Author(s)

Gaston Sanchez

See Also

nipals

Examples

## Not run: 
 # load data climbing ropes
 data(ropes)

 # apply nipals with 3 components
 nip1 = nipals(ropes[,-1], comps=3)

 # plot variables (correlations)
 plot(nip1)

 # plot observations
 plot(nip1, what="obs")

 # plot observations with names
 plot(nip1, what="obs", show.names=TRUE)
 
## End(Not run)

gastonstat/plsdepot documentation built on Feb. 24, 2023, 11:11 a.m.