B_05_qq {lattice} | R Documentation |
Quantile-Quantile plots for comparing two Distributions
qq(x, data, ...) ## S3 method for class 'formula' qq(x, data, aspect = "fill", panel = lattice.getOption("panel.qq"), prepanel, scales, strip, groups, xlab, xlim, ylab, ylim, f.value = NULL, drop.unused.levels = lattice.getOption("drop.unused.levels"), ..., lattice.options = NULL, qtype = 7, default.scales = list(), default.prepanel = lattice.getOption("prepanel.default.qq"), subscripts, subset)
x |
The object on which method dispatch is carried out. For the |
data |
For the |
f.value |
An optional numeric vector of probabilities, quantiles corresponding
to which should be plotted. This can also be a function of a single
integer (representing sample size) that returns such a numeric
vector. A typical value for this argument is the function
f.value = function(n) ppoints(n, a = 1) This has the effect of including the minimum and maximum data values
in the computed quantiles. This is similar to what happens for
For large |
panel |
A function, called once for each panel, that uses the packet (subset
of panel variables) corresponding to the panel to create a display.
The default panel function |
qtype |
The |
aspect |
See |
prepanel |
See |
scales |
See |
strip |
See |
groups |
See |
xlab, ylab |
See |
xlim, ylim |
See |
drop.unused.levels |
See |
lattice.options |
See |
default.scales |
See |
subscripts |
See |
subset |
See |
default.prepanel |
Fallback prepanel function. See |
... |
Further arguments. See corresponding entry in |
qq
produces Q-Q plots of two samples. The default behaviour of
qq
is different from the corresponding S-PLUS function. See the
entry for f.value
for specifics.
This and all other high level Trellis functions have several
arguments in common. These are extensively documented only in the
help page for xyplot
, which should be consulted to learn more
detailed usage.
An object of class "trellis"
. The
update
method can be used to
update components of the object and the
print
method (usually called by
default) will plot it on an appropriate plotting device.
Deepayan Sarkar Deepayan.Sarkar@R-project.org
xyplot
, panel.qq
,
qqmath
, Lattice
qq(voice.part ~ height, aspect = 1, data = singer, subset = (voice.part == "Bass 2" | voice.part == "Tenor 1"))