Usage
## S3 method for class 'copula':
persp(x, fun,
      n = 51, delta = 0,
      xlab = "x", ylab = "y", zlab = deparse(substitute(fun))[1],
      theta = -30, phi = 30, expand = 0.618,
      ticktype = "detail", ...)## S3 method for class 'mvdc':
persp(x, fun,
      xlim, ylim, nx = 51, ny = 51,
      xis = seq(xlim[1], xlim[2], length = nx),
      yis = seq(ylim[1], ylim[2], length = ny),
      xlab = "x", ylab = "y", zlab = deparse(substitute(fun))[1],
      theta = -30, phi = 30, expand = 0.618,
      ticktype = "detail", ...)
Arguments
x
either a "copula" or
    a "mvdc" object.
n
(for "copula":) the number of points in both
    directions to do the plotting.  The function fun will be
    evaluated on a grid of size $n \times n$.
delta
a very small number in $[0, \frac 1 2)$,
    defaulting to zero.  The x- and y- vectors will use range
    [0+delta, 1-delta], i.e., [0,1] by default.
xlim, ylim
("mvdc":) the range of the x or
    y variable, respectively. nx,ny
("mvdc":) the number of points in x- or
    y-direction, respectively.  The function fun will be
    evaluated on a grid of size $nx \times ny$.
xis, yis
("mvdc":) instead of specifying xlim,
      ylim and nx, ny, the numeric vectors (of length nx
    and ny) may be specified directly.
xlab, ylab, zlab, theta, phi, expand, ticktype, ...
arguments
    for (the default method of) persp(), the ones
    enumerated here all with different defaults than there.