Usage
vmesh(infile = NULL, data = NULL, edges = NULL,
xfun = "sin(v)*cos(u)", yfun = "sin(v)*sin(u)",
zfun = "cos(v)", param1 = "u", param2 = "v",
range1 = c(0,2*pi), range2 = c(0,pi), size1 = 30,
size2 = 30, filename = "out.wrl", cols = "red",
scalefac = 4, autoscale=ifelse(is.null(infile),
"independent","equicenter"), lab.axis = c("X-axis",
"Y-axis", "Z-axis"), col.axis = "white", showaxis = TRUE,
col.lab = "white", col.bg = "black", cex.lab = 1,
navigation = "EXAMINE", transparency = 0, fov = 0.785,
pos = rep(scalefac + 4, 3), dir = c(0.19, 0.45, 0.87, 2.45),
htmlout = NULL, hwidth = 1200, hheight = 800)Arguments
infile
filename of 3D mesh input file in obj-format
(not required if data and edges or the parameters for
parametric functions are specified)
data
a numerical matrix with 3 columns and n rows
specifying the coordinates of mesh vertices (not used if
parameter infile or xfun is specified
edges
a numerical matrix with each row corresponding
to the vertex numbers which form a polygon (first vertex has
number 0)
xfun
parametric function to define curves and surfaces
(1. dimension)
yfun
parametric function to define curves and surfaces
(2. dimension)
zfun
parametric function to define curves and surfaces
(3. dimension)
param1
name of the first parameter used in parametric
functions
param2
name of the second parameter used in parametric
functions
range1
value range for the first parameter for
parametric functions
range2
value range for the second parameter for
parametric functions
size1
mesh size for the first parameter used in
parametric functions
size2
mesh size for the second parameter used in
parametric functions
filename
filename of the generated VRML output file
cols
a vector of colors to visualize different classes
among the data points. The number of colors should be at least
as large as the number of different labels (i.e. length(col)
>= length(unique(labels))
scalefac
a scaling factor for the size of the 3D box in
which the data will be visualized
autoscale
the scaling type. "independent" means all axes
are auto-scaled independently, "equidist" means all axes are
scaled by the same factor, "equicenter" additionally positions
the drawn object in the center, "none" means no scaling is
applied
lab.axis
a vector of size 3 containing the axis labels
col.axis
color of the axis
showaxis
if FALSE, the coordinate axes are hidden in
the output
col.lab
a vector of colors specifying the axis labels
cex.lab
scaling factor for axis label font size
navigation
type of mouse navigation in the VRML file,
can be "EXAMINE", "WALK", "SLIDE", "FLY" or "PAN"
fov
a scalar defining the field of view angle in the
VRML file in radians
pos
a vector of size 3 for the position of the viewpoint
in the VRML coordinate system
transparency
a value between 0 and 1 specifying the degree
of transparency for the objects to be drawn
dir
a vector of size 4 specifying the viewing direction
(first 3 components) and the rotation of the camera around the
direction vector (last component in radians)
htmlout
a filename for generating an HTML-file to embed the VRML-output
hwidth
width of the embedded VRML-display in the HTML-output
hheight
height of the embedded VRML-display in the HTML-output