Usage
perspControl(theta = 1, phi = 30, r = sqrt(3), d = 1, scale = TRUE, expand = 1,
col = "white", border = NULL, ltheta = -135, lphi = 0, shade = 0.5, box = TRUE,
axes = TRUE, nticks = 5, ticktype = "simple", xlab = NULL, ylab = NULL,
zlab = NULL, main = NULL)
Arguments
theta
angles defining the azimuthal direction.
phi
angles defining the colatitude direction.
r
the distance of the eyepoint from the centre of the plotting box.
d
a value which can be used to vary the strength of the perspective transformation. Values of d greater than 1 will lessen the perspective effect and values less and 1 will exaggerate it.
scale
If scale is TRUE the x, y and z coordinates are transformed separately. If scale is FALSE the coordinates are scaled so that aspect ratios are retained.
expand
an expansion factor applied to the z coordinates.
col
the color(s) of the surface facets.
border
the color of the line drawn around the surface facets.
ltheta, lphi
if finite values are specified for ltheta and lphi, the surface is shaded as though it was being illuminated from the direction specified by azimuth ltheta and colatitude lphi.
shade
he shade at a surface facet
box
should the bounding box for the surface be displayed. The default is TRUE.
axes
should ticks and labels be added to the box. The default is TRUE.
nticks
the (approximate) number of tick marks to draw on the axes. Has no effect if ticktype is "simple".
ticktype
character: "simple" draws just an arrow parallel to the axis to indicate direction of increase; "detailed" draws normal ticks as per 2D plots.