Package 'Hmisc' - R

46 curveRep
Usage
whether subjects on different treatments are assigned to different time-response profiles. To write
the frequencies of a variable such as treatment in the upper left corner of each panel (instead of the
grand total number of clusters in that panel), specify freq.
curveSmooth takes a set of curves and smooths them using lowess. If the number of unique
x points in a curve is less than p, the smooth is evaluated at the unique x values. Otherwise it is
evaluated at an equally spaced set of x points over the observed range. If fewer than 3 unique x
values are in a curve, those points are used and smoothing is not done.
curveRep(x, y, id, kn = 5, kxdist = 5, k = 5, p = 5,
force1 = TRUE, metric = c("euclidean", "manhattan"),
smooth=FALSE, extrap=FALSE, pr=FALSE)
## S3 method for class 'curveRep':
print(x, ...)
## S3 method for class 'curveRep':
plot(x, which=1:length(res), method=c('all','lattice'),
m=NULL, probs=c(.5, .25, .75), nx=NULL, fill=TRUE,
idcol=NULL, freq=NULL, plotfreq=FALSE,
xlim=range(x), ylim=range(y),
xlab='x', ylab='y', ...)
curveSmooth(x, y, id, p=NULL, pr=TRUE)
Arguments
x
y
id
kn
kxdist
k
p
force1
metric
smooth
a numeric vector, typically measurement times. For plot.curveRep is an
object created by curveRep.
a numeric vector of response values
a vector of curve (subject) identifiers, the same length as x and y
number of curve sample size groups to construct. curveRep tries to divide the
data into equal numbers of curves across sample size intervals.
maximum number of x-distribution clusters to derive using clara
maximum number of x-y profile clusters to derive using clara
number of x points at which to interpolate y for profile clustering. For curveSmooth
is the number of equally spaced points at which to evaluate the lowess smooth,
and if p is omitted the smooth is evaluated at the original x values (which will
allow curveRep to still know the x distribution
By default if any curves have only one point, all curves consisting of one point
will be placed in a separate stratum. To prevent this separation, set force1 =
FALSE.
see clara
By default, linear interpolation is used on raw data to obtain y values to cluster
to determine x-y profiles. Specify smooth = TRUE to replace observed points