Displaying 20 results from an estimated 3000 matches similar to: "adding text to persp"
2001 Oct 24
1
mixed fonts
Any way of mixing bold and plain fonts in text() (or mtext(), etc.)? I'm
looking for a solution that doesn't require manually spacing two calls
of text(). For example:
text(x=0,y=0,labels="bold(Figure 1.) plain(This is a picture.)")
where "Figure 1." is bold-faced and "This is a picture." is plain-faced.
I've tried to trick plotmath into doing this but
2001 Aug 07
1
multiple persp plots
Hello,
I would like to plot two superposed surfaces (original data, and smoothed
models). Basically, I would like to create a usual persp plot with box, and
then superpose a second surface (without box and axes) on the top plane of
the box defined by the first graph. I don't know if it is clear :-(
Is it possible to draw such a second surface in an existing persp plot in R?
Another (related)
2004 Dec 02
1
Arrow and text on a 3d plot
I am currently working on surface plots (with R 2.0.1) and I want to
improve the aspect of them. Having a typical 'cow-boy hat' surface
[source: Spector (1994), p. 206]:
pts <- seq(from = -8, to = 8, length = 50)
cow <- function(x, y)
{
z <- sqrt(x^2+y^2)
sin(z)/z
}
out <- outer(pts, pts, cow)
sur <- persp(x=pts, y=pts, z=out, theta=45, phi=30)
What I exactly wanted is:
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(...) ..
2001 Nov 05
2
apex ??
I would to know if it's possible with R
put an apex on a character ( i.e 10-2 or aij )
Thanks in advance
Damiano
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2001 Nov 05
1
help me again
I would like to know how I can set with a R-command
the values from decimal to exponential (e.g. from 0.001 to 10^-3)
on the axis y.
Thank you
Damiano
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1999 Dec 06
1
No subject
Hi,
can anyone help with two questions concerning persp?
(1) Is there a function in R to project points onto a persp() plot, as is in
S+ (perspp() I think) ?
(2) How can I label and tickmark axes x,y and z in a persp plot?
(I am still using RW065)
Thanks for any help
--
Dr. Jens Oehlschl?gel-Akiyoshi
MD FACTORY GmbH
Bayerstrasse 21
80335 M?nchen
Tel.: 089 545 28-27
Fax.: 089 545 28-10
2001 Aug 20
2
interrupting Sys.sleep (PR#1063)
On Linux R1.3.0 (and current pre1.3.1 and pre1.4.0)
Sys.sleep(30)
interrupt with CTRL-C
Sys.sleep(30)
causes a segmentation fault. It doesn't happen under Windows (2000).
-thomas
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r-devel mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html
Send "info", "help", or
2001 Aug 19
2
system.file("",package) (PR#1062)
system.file("",package") is documented to return the root of the package
(as it did in the past). It actually returns "" (Win98, R1.3.0), breaking
the SJava package
Omitting the first argument does work correctly and so is a workaround if
the argument is explicitly "" but not if it is the value of a variable.
-thomas
2013 Oct 15
1
plotting a marginal distribution on the plane behind a persp() plot
R'istas:
I am trying to plot a marginal distribution on the plane behind a persp() plot. My existing code is:
library(MASS)
X <- mvrnorm(1000,mu=c(0,0),Sigma=matrix(c(1,0,0,1),2))
X.kde <- kde2d(X[,1],X[,2],n=25) # X.kde is list: $x 1*n, $y 1*n, $z n*n
persp(X.kde,phi=30,theta=60,xlab="x_b",ylab="x_a",zlab="f") ->res
Any suggestions are very
2004 Dec 15
3
adding perspectives to existing persp plots
I've created a perspective plot using 'persp' in the graphics package.
I'd like to add a second plane of z values to the existing plot, but I
cannot seem to do this using 'persp'. Is there an analogue to 'lines' or
'points' for perspectives?
Corey.
corey.bradshaw at cdu.edu.au
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
2003 Sep 08
2
Persp Plot
I am trying to graph two planes on the same graph using persp(). I can only
get one plane to plot at a time. Can someone explain how I can graph two
planes on the same graph using persp? I've looked throught the
documentation, but cannot find any references to appending a persp plot.
Thanks.
Sincerely yours,
Mark J. Lamias
Statistical Consultant
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.
2007 Apr 11
2
persp Error. x,y,z with the same length
Hello,
I have a problem in drawing a 3d graphic. I simplified the program to show you the problem.
I have a text file with hundreds of entries in 3 columns. I scaned these columns with matrix(scan). Then, I transformed some datas. Now I have the datas in h,x,y.
I created a new matrix to use persp . But I got an error. The reason is probably the same length of x,y,z.
But what can I do the draw
2018 Jul 16
2
persp command
Dear R-devel mailing list,
I am wondering whether the "theta" and "phi" parameters of the "persp"
function
in the graphics commands are named in error (the names seem to have been
swapped). Also, in the documentation to "persp", reference is made to
"colatitude"
when the effect in the image is actually that of "latitude".
Thank you,
2003 Sep 15
2
Persp and color
How can I control de "wrap-around" color behaviour in the persp
function ?
I am using something like :
persp(bb[1:100,2:97], col= rainbow(8,start=0.1, end=0.8)))
Depending on the rainbow length value I get several "wrap-around" blocks of
the selected color range...something that I wanted to avoid...
My idea is to use the color in order to make a separation from a
certain
2006 Jun 28
1
persp/ scatterplot3d
Dear WizaRds,
I would like to create a 3d-plot with persp(). I sampled 17 points
with xyz-coordinates (real-life example!), representing the peaks of the
whole plane with "zero coordinates" x=3,y=3,z=3. My intention is to show
which entries are above or below the "zero" level with persp() on a
nicely created grid. I also tried scatterplot3d(), but, alas, I am
unable
2008 Mar 11
2
persp question
someone sent in a question earlier about doing
something in 3D so i took a stab at it purely
for educational purposes ( i'm not even sure that I understood the question actually ).
Unfortunately, persp gives me an error that I don't understand because it says "object y not found". I'm sending y in as a parameter to persp similar to what ?persp shows in one of oits examples
2004 Oct 26
1
persp(), scatterplot3d(), "..." argument
Hello list.
I very often need 3d scatterplots, and use scatterplot3D quite a lot.
I am trying to modify persp() to plot scatterplots, and make use of
the theta and phi arguments that persp() offers. I am having some
difficulty passing the correct arguments to persp().
Here is my function so far. Much of it is copied from the persp() manpage.
points3d <- function(x,y,z,