coppersplot: Perspective Plot of Copula

In AlexanderRitz/copR: Archimedean Copulas (copR)

Description

Gives a perspective plot of the surface of a given copula object for a specified function.

Usage

coppersplot(copula, FUN, n.grid = 50, delta = 0, xlim = 0:1,
  ylim = 0:1, xlab = "u1", ylab = "u2", zlab = FUN,
  main = paste(FUN, "of", copula$family, "Copula", sep = " "),
  theta = -45/2, phi = 30, expand = 0.75, col.pal = "Viridis",
  border = NA, shade = NA, ticktype = "detail", ...)

Arguments

copula	A copula object. Supplies the copula to be used for the perspective plot.
FUN	character. Decides whether the cdf or pdf of the supplied copula is to be plotted. Accepts "cdf" or "pdf" as input.
n.grid	integer. Number of grid points in x- and y-direction. Vector of length two or one (used for both directions). Determines the number of facets.
delta	double. A value in the range [0, 0.5) for changing the evaluation boundaries by adding it to the lower limits of x and y and subtracting it from the upper limits of x and y. Defaults to zero.
xlim	double. Range of x values to be plotted. Defaults to [0, 1].
ylim	double. Range of y values to be plotted. Defaults to [0, 1].
xlab	character. Title for x-axis.
ylab	character. Title for y-axis.
zlab	character. Title for z-axis.
main	character. Main title for the plot. Set to NULL to omit the title.
theta	double. Azimuthal viewing direction.
phi	double. Viewing colatitude.
expand	double. Expansion factor applied to the z coordinates.
col.pal	character. Name of the color palette to be used for the sur- face facets, provided by the function hcl.colors() in the grDevices package.
border	character, function, or integer. Color of the line drawn around the surface facets. The default NA shows no borders. NULL corresponds to par("fg").
shade	double. Shade of surface facets.
ticktype	character. "simple" draws just an arrow, "detailed" draws normal ticks as in 2D plots.
...	character, function, or integer. Additional graphical parameters.

Value

A perspective plot of a surface over the x-y plane using the values given by FUN for a copula of the form given by the supplied copula object.

References

Hofert et al. (2018). Elements of Copula Modeling with R. Springer.

Davies (2016). The Book of R: A first course in programming and statistics. no starch press.

See Also

coptourplot

Examples

excop <- claycop(par = 1, dim = 2)
# Plotting the cdf
coppersplot(copula = excop, FUN = "cdf")
# Plotting the pdf
coppersplot(copula = excop, FUN = "pdf", n.grid = 20, delta= 0.1,
            theta = -30, col.pal = "Plasma", border = NULL,
            main = "Clayton Copula PDF", cex.main = 0.8)

AlexanderRitz/copR documentation built on Oct. 30, 2019, 4:11 a.m.