Displaying 20 results from an estimated 500 matches similar to: "3D plot of a bivariate normal distribution"
2003 Sep 01
0
Re: Plotting bivariate normal distributions.
You'll find that it is a lot easier to do it in R:
# lets first simulate a bivariate normal sample
library(MASS)
bivn <- mvrnorm(1000, mu = c(0, 0), Sigma = matrix(c(1, .5, .5, 1), 2))
# now we do a kernel density estimate
bivn.kde <- kde2d(bivn[,1], bivn[,2], n = 50)
# now plot your results
contour(bivn.kde)
image(bivn.kde)
persp(bivn.kde, phi = 45, theta = 30)
# fancy contour with
2007 Aug 10
1
Unexpected behavior in PBSmapping package
Using R 2.5.1 on Windows XP Professional, and PBSmapping package version
2.51, I have encountered some behavior which puzzles me. I am including
the package's listed maintainer on this email but also seek the thoughts
of the R-help community.
I have a set of EventData, which I want to plot as points, and to color
the points according to some criterion. It turns out that some of my
2003 Jul 10
0
clim.pact (fwd)
I'm trying to use the clim.pact
package but I cannot find the
descritions of "map object or "field object". For example,
according to the man page of function "map":
"
Description
Produces maps.
Usage
map(x,y=NULL,col="black",lwd=1,lty=1,sym=TRUE, plot=TRUE,inv.col=FALSE)
Arguments x A map object.
...
"
and according to the man page of
2008 Feb 27
2
png and pdf : point size, font size, etc.
Hi,
I am new to this mailing list. Didn`t find the answer in the archives. But I
guess, there are people out there, who know the solution:
In an automatic script, I want to produce simple plots. First I prefer pdf,
because of scalability and standardization. But when I have too many
datapoints (say 300.000) the viewing and printing is very, very slow. So I
decided to take some bitmapped format
2000 Sep 19
3
getting lines with non-rounded caps?
I'm trying to get a plot with wide lines that don't have rounded end caps.
You can see the effect quite clearly with a plot like this:
plot(0:1)
lines(c(1.5,1.5),c(0,.5),lwd=20,col="red")
lines(c(1.5,1.5),c(.5,1),lwd=20,col="green")
abline(h=0)
abline(h=0.5)
abline(h=1)
The colored lines should be between the horizontal lines, but because of the
rounded end caps,
2003 Jun 30
1
symbol size on a plot
Hi,
I would like to get from a plot the size of the symbols plotted.
Imagine I have the following plot function :
plot(1:2,1:2, pch=15, cex=4)
I would like the get the values SIZE1 and SIZE2 so that if I plot the
following rectangle :
rect(1.5,1.5, 1.5+SIZE1, 1.5+SIZE2) then the size of this square is
exactely the same as the one of the symbols that have been plotted.
Thanks for any idea.
--
2010 Apr 07
1
Quartering a plot() ?
Sorry if my terminology is all out of sorts here, but I'm curious about a
simple matter: I have a plot, and within it a box defined by lines, like so:
plot(c(), xlim=c(-1.5,1.5), ylim=c(0,5))
lines(c(1,1,-1,-1,1),c(1.5,3.5,3.5,1.5,1.5), col=c("red"))
I'd like to easily chop the box drawn by lines into an even 3x3 grid- is
this possible easily?
Thanks!
--
Wells Oliver
2010 Nov 25
1
Replacing 1 plot in layout
Hi,
layout(1:2) # split the screen into 2 regions
plot(1:2) # plot in region 1
plot(1:2) # plot in region 2
par(mfg=c(1,1)) # Then I want to update the plot in region 1
plot(1.5,1.5)
But the this last plot overlays with my 1st plot.
Q: How do I replace my first plot with my last?
#### NOTE ######
I know I can do this with split.screen and screen(n,TRUE)
But then it actually clears the
2011 Jun 30
2
volcano plot.r
Hello.
My name is Akashah. i work at metabolic laboratory. From my study, i found that volcano plot can help a lot in my section.
i already studied about the volcano plot and get the coding to run in R software, unfortunately, there is may be something wrong with the coding. This is because no graph appear, but no error (blue color text) was shown on the R console. Below is the coding for
2011 Jun 20
2
(no subject)
HELLO, anybody... could you help me to check the below coding for volcano.
what is the mistake?
what the plot could not display?
# volcano_plot.r
#
# Author: Amsha Nahid, Jairus Bowne, Gerard Murray
# Purpose: Produces a volcano plot
#
# Input: Data matrix as specified in Data-matrix-format.pdf
# Output: Plots log2(fold change) vs log10(t-test P-value)
#
#
2002 Aug 09
2
time series and R
Hi,
Are there some texts about time series that teatches it with R?
And site 'bout time series "for dummies" , can anyone indicate them for me?
thanks a lot
Rafael Bertola
Undergraduate in Statistics at UNICAMP - Brasil
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2004 Aug 06
3
[Fwd: Icecast2 and ices]
I got this offlist from someone on the list. This is abuse and should
be punished. This didn't anwser my post and was directed to me off-list
without invitation. All it was was a promotion.
-----Forwarded Message-----
From: Dave St John <groups@mediacast1.com>
To: drew@drewb.com
Subject: Icecast2 and ices
Date: 22 Aug 2003 19:22:17 -0600
Hello Drew,
saw your post on the xiph list
2010 Jun 08
1
add one point to contourplot()
Hi All,
I want to add one point to contourplot(). I used contourplot() in my code like
contourplot(z ~ a + b |c, data)
I understand there is plot.axes argument for filled.contour(), but it did not work for my code. I also tried plot() and text() for contourplot(), but got this error: "plot.new has not been called yet"
Any suggestion for adding a point in contourplot()?
Thank you very
2004 Jun 21
2
visualizing a list of probabilities
Hi,
I'm using nnet to work on a 2 class classification problem. The result
of my code is data.frame of true class, predicted class and associated
probability.
One way of summarizing the data is by a confusion matrix. However are
there any graphical ways I could represent the data - specifically, I'd
like to show the probabilities associated with each member of my
prediction set?
(I
2008 Jul 24
2
simple random number generation
useR's,
I want to randomly generate 500 numbers from the standard normal
distribution, i.e. N(0,1), but I only want them to be generated in the range
-1.5 to 1.5. Does anyone have a simple way to do this?
Thanks,
dxc13
--
View this message in context: http://www.nabble.com/simple-random-number-generation-tp18642611p18642611.html
Sent from the R help mailing list archive at Nabble.com.
2003 Jan 02
2
nonparametrics databank for analisys
I'm looking for data to use with nonparametrics exploration technics.
I'm a undergraduate student in statistics at the Unicamp (Brazil), and
i've to make a project (with orientation of a professor). I choose
nonparametrics statistics to make the project. But in this project i must
have to use a databank and present analisys.
So, if somebody give me indications where i can find
2007 Jan 29
1
overlay xyplot on contourplot in lattice in R
Hi everybody,
I want to do a contourplot in lattice with my raw data overlaid on it(xyplot)
which seemed to be a very easy thing to do.
I've tried it in many ways, but I haven't succeeded at obtaining it.
let's say x, y, and z as the variables that comes from the data frame ''ex'':
therefore my countourplot is as followed :
contourplot(z ~ x * y, cuts=550)
I
2010 Jul 10
1
contourplot by year
Hi - I have a dataframe with 4 variables - long, lat, temp and year. I would
like to plot temperature by lat and long in contour plots by year. There
are 391 data points. When I try
contourplot(temp~long*lat|year,data=hake,cuts=10,labels = TRUE,contour =
TRUE,pretty = TRUE,region=TRUE)
I get plots with dots around by data, but not contour lines or filled in
regions.
I have also used the
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 Aug 06
5
capturing pid from command line
On Mon, 2003-11-03 at 21:53, Dave St John wrote:
> Anyone know of or how to capture the pid via the command line in bash?
pidof ???
$ pidof httpd
827 825 824 788
--
Drew
<p>--- >8 ----
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