| plot.Variogram {nlme} | R Documentation |
an xyplot of the semi-variogram versus the distances is
produced. If smooth = TRUE, a loess smoother is added to
the plot. If showModel = TRUE and x includes an
"modelVariog" attribute, the corresponding semi-variogram
is added to the plot.
## S3 method for class 'Variogram':
plot(x, smooth, showModel, sigma, span, xlab,
ylab, type, ylim, grid, ...)
x |
an object inheriting from class Variogram,
consisting of a data frame with two columns named variog and
dist, representing the semi-variogram values and the corresponding
distances.
|
smooth |
an optional logical value controlling whether a
loess smoother should be added to the plot. Defaults to
TRUE, when showModel is FALSE.
|
showModel |
an optional logical value controlling whether the
semi-variogram corresponding to an "modelVariog" attribute of
x, if any is present, should be added to the
plot. Defaults to TRUE, when the "modelVariog"
attribute is present.
|
sigma |
an optional numeric value used as the height of a
horizontal line displayed in the plot. Can be used to represent the
process standard deviation. Default is NULL, implying that no
horizontal line is drawn.
|
span |
an optional numeric value with the smoothing parameter for
the loess fit. Default is 0.6.
|
xlab,ylab |
optional character strings with the x- and y-axis
labels. Default respectively to "Distance" and
"SemiVariogram".
|
type |
an optional character indicating the type of plot. Defaults
to "p".
|
ylim |
an optional numeric vector with the limits for the
y-axis. Defaults to c(0, max(x$variog)).
|
grid |
an optional logical value indicating whether a grid should
be added to plot. Default is FALSE. |
... |
optional arguments passed to the Trellis xyplot function. |
an xyplot Trellis plot.
Jose Pinheiro Jose.Pinheiro@pharma.novartis.com and Douglas Bates bates@stat.wisc.edu
data(Ovary) fm1 <- lme(follicles ~ sin(2*pi*Time) + cos(2*pi*Time), Ovary) plot(Variogram(fm1, form = ~ Time | Mare, maxDist = 0.7))