Re: [R] Contour lines in a persp plot
Thanks a lot, that is all i want. If someone is interessed, see the code
below
panel.3d.contour -
function(x, y, z, rot.mat, distance,
nlevels = 20, zlim.scaled, ...) # les3 points de suspension
pour dire les autres paramètres sont ceux données par défaut
{
add.line - trellis.par.get(add.line)
panel.3dwire(x, y, z, rot.mat, distance,
zlim.scaled = zlim.scaled, ...)
clines -
contourLines(x, y, matrix(z, nrow = length(x), byrow = TRUE),
nlevels = nlevels)
for (ll in clines) {
m - ltransform3dto3d(rbind(ll$x, ll$y, zlim.scaled[2]),
rot.mat, distance)
panel.lines(m[1,], m[2,], col = add.line$col,
lty = add.line$lty, lwd = add.line$lwd)
}
}
fn-function(x,y){sin(x)+2*y} #this looks like a corrugated tin roof
x-seq(from=1,to=100,by=2) #generates a list of x values to sample
y-seq(from=1,to=100,by=2) #generates a list of y values to sample
z-outer(x,y,FUN=fn) #applies the funct. across the combos of x and y
wireframe(z,zlim = c(1, 300), nlevels = 10,
aspect = c(1, 0.5), panel.aspect = 0.6,
panel.3d.wireframe = panel.3d.contour,
shade = FALSE ,
screen = list(z = 20, x = -60))
--
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[R] Contour lines in a persp plot
Hello folks,
i'm a R beginner and i want to put in a same plot both contour lines
and persp plot.
For example,
fn-function(x,y){sin(x)+2*y} #this looks like a corrugated tin roof
x-seq(from=1,to=100,by=1) #generates a list of x values to sample
y-seq(from=1,to=100,by=1) #generates a list of y values to sample
z-outer(x,y,FUN=fn) #applies the funct. across the combos of x and y
persp(z) #plots without gridlines
contour(z) # for contour lines
i want this in a same plot.
Can anyone help me, i have no more idea to try this.
Thanks
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
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Re: [R] Contour lines in a persp plot
On May 16, 2013, at 8:23 AM, sms...@univ-fcomte.fr wrote:
Hello folks,
i'm a R beginner and i want to put in a same plot both contour lines and
persp plot.
For example,
fn-function(x,y){sin(x)+2*y} #this looks like a corrugated tin roof
x-seq(from=1,to=100,by=1) #generates a list of x values to sample
y-seq(from=1,to=100,by=1) #generates a list of y values to sample
z-outer(x,y,FUN=fn) #applies the funct. across the combos of x and y
persp(z) #plots without gridlines
contour(z) # for contour lines
i want this in a same plot.
Can anyone help me, i have no more idea to try this.
Ideas: I can tell you that I have seen an example that projects contour lines
on one of the pseudo-3d coordinate planes of a wireframe (lattice) plot in
Sarkar's Lattice book. (All of those examples are on the web and a google
search: lattice wireframe contour plot … is immediately productive of a
citation to Figure 13.7 as well as links to the Rhelp archive.) To do something
similar I imagine you would need to do work with the coordinate transform
function, ?trans3d, described on the ?persp page and use as input the results
from ?contourLines.
--
David Winsemius
Alameda, CA, USA
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