Displaying 20 results from an estimated 6000 matches similar to: "Coloured 3d surface"
2002 Oct 21
2
3-D scatter plot laid over Surface plot
Hello,
I have created a Fitness surface (persp()), with data that was created
by a tp spline procedure. Now I would like to superimpose a set (XYZ) of
existing points (from two different treatments) onto this surface.
I didn't come across any function or command that is able to do this in R.
Could somebody please help me in finding a solution to this problem
Thank you
Peter
--
2004 Aug 06
1
: (Lattice): Overlaying more than one trend surface using contourplot() and wireframe()
Hi,
Is there a way to plot more than one trend surface using the functions
contourplot() and wireframe(). I have found an add=T in contour(), but
no equivalent argument in contourplot() and wireframe()?
I have taken the example 11-2 (pages 441-451) from Design and analysis
of experiments (Montgomery 2001, 5th edition) to see if this could be
done in R. I have managed to plot individual
2004 Feb 03
4
filled maps
Hi R-Help,
I would like to make filled contour maps of ocean data overlaid by
costlines from the map package.
I can draw the filled contours and the coastlines om the same plot, but
the filled contour also covers part of the land. To get rid of that I
tried to draw a filled coastline map on top of the filled contour, but
the filled map only draws the closed contours - so most of the land is
2011 Dec 22
1
overlaid filled contour plots
I'm trying to make a set of contour plots of bivariate kernel density
estimates, showing three such plots overlaid,
similar to this plot
http://euclid.psych.yorku.ca/SCS/Private/Test/ridge-boot2.pdf
except that I would like to have the contours *filled* (using
transparent colors). To make this reproducible, I've
saved the results of KernSmooth::bkde2D() in the following file:
2001 Nov 21
2
contour as a generic function?
After "image" and "persp" would it be interesting to als have contour as a
generic function?
Cheers
Paulo Justiniano Ribeiro Jr
Dept Maths & Stats - Fylde College
Lancaster University
Lancaster LA1 4YF - U.K.
e-mail: Paulo.Ribeiro@est.ufpr.br
http://www.maths.lancs.ac.uk/~ribeiro
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1998 Dec 03
2
contour labelling [was "Re: image ()"]
> From: Martin Maechler <maechler at stat.math.ethz.ch>
> To: royle at bearmtn-e0.cgd.ucar.edu
> CC: lgygax at access.unizh.ch, r-help at stat.math.ethz.ch
> Subject: contour labelling [was "Re: [R] image ()"]
> Mime-Version: 1.0 (generated by tm-edit 7.106)
>
> >>>>> "Jeffrey" == Jeffrey A Royle <royle at bearmtn-e0.cgd.ucar.edu>
2009 Apr 08
1
vectors on top of contours, and lattice
OK, I needed to plot a set of vectors on top of a contour plot. I
figured out a way to do this. I create a panel function that calls
"larrows()" with arguments constructed from my vector data. Then, when
I go to do the contour plot, I call contourplot() with the "panel"
argument set to point to my newly created panel function.
So far, so good.
Now, I need to do a
2009 Nov 22
1
contour(): lines & labels in different colours?
Greetings, All!
I want to draw contour lines in red, using contour(), but also
have the contour labels (for the level-values) in black so that
they will stand out against a coloured background already generated
using filled.contour() (the background shades from green at low
levels of "risk" to red at high levels).
In any case, contour labels in red are already somewhat inconspicuous
2005 Apr 07
3
4D Plot ??
Tried to post this last night, but it doesn't seem to have appeared.
Using R 2.0.1 on Windows XP + SP2.
I am traveling, away from my usual references. I'm trying to make a
4-dimensional plot: a levelplot with overlaid contours, with different
response variables represented by (1) colors on the levelplot and (2)
the contour lines.
First try was filled.contour + contour but the key
2006 Mar 11
2
Draw level lines on the surface of a bivariate function
Hello,
Is it possible to draw level lines on the surface of a bivariate function?
In the following example, to draw surface and levels lines for a
multivariate normal law,
I use persp, trans3d, contourLines and lines,
but if the lines are correctly drawn, some parts of them are, of
course, visible
even if they are drawn on a non visible "face".
Any suggestion to avoid this problem
2000 Jan 31
1
Interest in R plotting capabilities
I'm a scheme and C user generally, I'm a bit wary of the large FORTRAN
content of the R language but aside from that issue it seems nice and simple
and easy to use.
What I want to do is find some GPL software to replace gnuplot,
and since R does all the calculating stuff that gnuplot does (probably
R is faster though I haven't tested) plus R has quite decent
plotting capabilities I
2010 Feb 20
1
Add lines (contours) to lattice wireframe plot
Hi,
I draw a surface corresponding to bivariate density of independent
variables (rho=0) using persp(). Then I add a contour line (i.e.,
circle in my case) at a particular density. Below is a minimal example
of what I have so far.
# Bivariate density
dnorm2d <- function(x, y, rho = 0) {
xoy = (x^2 - 2 * rho * x * y + y^2)/(2 * (1 - rho^2))
density = exp(-xoy)/(2 * pi * sqrt(1 - rho^2))
2007 Jan 01
4
Help with filled.contour()
The following plot is a first approximation to what I need:
***********************************
mu1 <- 0
mu2 <- 5
s <- 1
x <- seq(-2.5, 7.5, length = 41)
y <- seq(-2.5, 2.5, length = 41)
f <- function(x,y){
term1 <- 1/(2*pi*sqrt(s*s))
term2 <- -1/2
term3 <- (x - mu1)^2/s
term4 <- (y - mu1)^2/s
term5 <- (x - mu2)^2/s
term1*(.5 * exp(term2*(term3 + term4)) + .5 *
2001 Feb 12
1
3d plots?
Hi all
I'm trying to create a three-dimensional wireframe-type plot,
much like the screenshot shown at
http://www.r-project.org/screenshots/volcano-persp.jpg
In my case, I'm trying to show a density estimate of
two-variable system, using the GenKern package. I've
used the image() and contour() to create a nice shaded plot,
but I've found a 3d plot is often easier for the
2013 May 16
1
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
2010 Feb 07
1
contour & persp
I have this data set that both x & y are ordered vectors of length 600 & 700 respectively; z is a 600 by 700 matrix whose entry z[i,j] is either a missing value (indicated by 'NaN') or a real number between 0 and 1. The contour function
contour(x,y,z)
gives me a blank picture. I guess the reason is that most of z-entries are missing, only less than 1% are non missing.
2003 Dec 25
6
Plot a sphere
Hi,
I'm new to R (and math ;) Would somebody please be so kind as to direct me
in plotting a 3D sphere?
I tried something in the lines of:
####
y <- x <- seq(-pi, pi, length=pi*10)
f <- function(x,y)
{
z <- sqrt(pi - x^2 - y^2)
#z[is.na(z)] <- 0
z
}
z <- outer(x, y, f)
persp(x, y, z, theta = 120, phi = 30)
####
I've also tried: .... make.surface.grid(...) ..
2004 Feb 18
3
persp and lines()
R-sters:
I'm interested in keeping data plotted in persp to preserve the wireframe
look, I'd just like to change one of the lines drawn (in either the x or y
direction) into a different color so that it stands out.
Or is there some way to add a line (say, via lines(), or abline()) to a
persp() plot at the designated x or y that would follow the z surface
contour? I could add a line
2006 May 09
2
RFC: log='z' for image, contour, persp?
I've been thinking of adding the possibility of including "z" among the
axes to be logged in image, contour, and persp. In the first two, it
would only affect where the breaks were set if they are calculated
automatically; it would have a bigger effect in persp.
For example,
image(x, y, z, log="z")
would set 12 colours evenly spaced on a log scale of the z values.
2009 Aug 13
2
How to plot 3-D surface graph from lmer mixed models?
Dear R users,
I have a problem in plotting 3 dimensional graph using mixed models.
My model is
sur_prop ~
afr_c+I(afr_c^2)+I(afr_c^3)+byear_c+I(byear_c^2)+I(byear_c^3)+I(byear_c^4)+(1|Studyparish)+afr_c:byear_c
+afr_c:I(byear_c^2)+afr_c:I(byear_c^3)+afr_c:I(byear_c^4)+I(afr_c^2):byear_c+I(afr_c^2):I(byear_c^2)+I(afr_c^2):I(byear_c^3)+I(afr_c^2):I(byear_c^4)
This is a study on the effect of