panel.functions {lattice} | R Documentation |
These are predefined panel functions available in Trellis for use in constructing new panel functions (usually on-the-fly).
panel.abline(a, b, ...) panel.abline(coef, ...) panel.abline(reg, ...) panel.abline(h= ,v= , ...) panel.fill(col="grey", ...) panel.grid(h=3, v=3, ...) panel.lmline(x,y,...) = panel.abline(lm(y~x),...) panel.loess(x, y, span = 2/3, degree = 1, family = c("symmetric", "gaussian"), evaluation = 50, ...) panel.linejoin(x, y, fun = mean, horizontal = TRUE, ...) panel.mathdensity(dmath = dnorm, args = list(mean=0, sd=1))
x, y |
variables defining the contents of the panel |
a, b |
Coefficients of the line to be added |
coef |
Coefficients of the line to be added as a length 2 vector |
reg |
A regression object. The corresponding fitted line will be drawn |
h,v |
For panel.abline, numerical vectors giving y and x locations respectively of horizontal and vertical lines to be added to the plot. For panel.grid, number of horizontal and vertical reference lines to be added to the plot; h=-1 and v=-1 make the grids aligned with the axis labels (this doesn't always work). |
col |
color |
span, degree, family, evaluation |
arguments to
loess.smooth in the modreg library. panel.loess
is essentially a wrapper on loess.smooth
|
fun |
the function that will be applied to the subset of x(y) determined by the unique values of y(x) |
horizontal |
logical. If FALSE, the plot is `transposed' in the
sense that the behaviours of x and y are switched. x is now
the `factor'. Interpretation of other arguments change
accordingly. See documentation of bwplot for a fuller
explanation.
|
dmath |
A vectorized function that produces density values
given a numeric vector named x , e.g., dnorm |
args |
list giving additional arguments to be passed to dmath |
... |
graphical parameters can be supplied. see function
definition for details. Color can usually be specified by col,
col.line and col.symbol , the last two overriding the first
for lines and points respectively.
|
panel.abline
adds a line of the form y=a+bx
or vertical
and/or horizontal lines. Graphical parameters are obtained from
reference.line
for panel.grid, and add.line
for the
others (can be set using trellis.par.set
)
panel.linejoin
treats one of x and y as a factor (according to
the value of horizontal
, calculates fun
applied to the
subsets of the other variable determined by each unique value of the
factor, and joins them by a line. Can be used in conjunction with
panel.xyplot
and more commonly with panel.superpose to produce
interaction plots. See xyplot
documentation for an example.
panel.mathdensity
plots a (usually theoretical) probability
density function. Can be useful in conjunction with histogram
and densityplot
to visually estimate goodness of fit.
Deepayan Sarkar deepayan@stat.wisc.edu