El mié, 03-11-2004 a las 17:34, Prof Brian Ripley escribió:
On Wed, 3 Nov 2004, F.Tusell wrote:
In comparing the results of princomp and prcomp I find:
1. The reported standard deviations are similar but about 1% from
each other, which seems well above round-off error.
That
At 18:54 2004-11-02 -0400, you wrote:
Anybody knows if there exists somewhere in R some implementation of robust
Poisson regression,
where robust is taken in the sense as usen in rlm(MASS). I found something
in the package
wle, but only for the Poisson distribution, not for regression.
Take a
KevinW == Kevin Wright [EMAIL PROTECTED]
on Wed, 3 Nov 2004 08:06:59 -0800 (PST) writes:
KevinW I have seen a couple of posts about color schemes like those at the
KevinW ColorBrewer site. Most recently:
KevinW http://geography.uoregon.edu/datagraphics/color_scales.htm
Hi,
Suppose I have:
for(i in 1:10)
rnorm(10)
(just a fake example, as my actual example is too long)
Is it possible to get the loop to print out i each time it has run?
Something like:
for(i in 1:10) {
print(i)
rnorm(10)
}
will only print i after the loop is
Kevin Wang [EMAIL PROTECTED] writes:
Hi,
Suppose I have:
for(i in 1:10)
rnorm(10)
(just a fake example, as my actual example is too long)
Is it possible to get the loop to print out i each time it has run?
Something like:
for(i in 1:10) {
print(i)
Hi,
On Thu, 4 Nov 2004, Peter Dalgaard wrote:
Kevin, you must have seen this on the list before! Either use
flush.console() or turn off the output buffering (Windows FAQ 6.3).
Whoopsssorry, I must be tiredneed another cup of coffee.
Kev
Ko-Kang Kevin
Kevin Wang wrote:
Hi,
Suppose I have:
for(i in 1:10)
rnorm(10)
(just a fake example, as my actual example is too long)
Is it possible to get the loop to print out i each time it has run?
Something like:
for(i in 1:10) {
print(i)
rnorm(10)
}
will only print i
Justin Manjourides wrote:
I'm using R for Mac OS X Aqua GUI version 2.0
When using plot() with a linear model object, the plot of the LSR line does not
appear. I get the residual plots, the Normal Q-Q plots and Cook's Differnce
plot, just not the first plot with the fitted line. I just get an
Hi,
is there any way to keep a sub matrix dimension?
exemple :
i1-1; i2-1
j1-2; j2-3;
ret -matrix(1,4,4)[i1:i2,j1:j2] ;
dim(ret) is NULL because the submatrix single col or single row is coerce to a vector
automaticaly.
How can i bypass this cast : submatrix-vector ???
Thank you.
just use
matrix(1,4,4)[i1:i2,j1:j2, drop=FALSE]
Best,
Dimitris
Dimitris Rizopoulos
Ph.D. Student
Biostatistical Centre
School of Public Health
Catholic University of Leuven
Address: Kapucijnenvoer 35, Leuven, Belgium
Tel: +32/16/396887
Fax: +32/16/337015
Web:
See
help([)
which informs you about the additional argument drop:
ret -matrix(1,4,4)[i1:i2,j1:j2,drop=FALSE] ;
BTW, you do not need to end lines of code with a ; ...
Eric
At 12:06 4/11/2004, JC Vaugeois wrote:
Hi,
is there any way to keep a sub matrix dimension?
exemple :
i1-1; i2-1
j1-2; j2-3;
JC Vaugeois [EMAIL PROTECTED] writes:
Hi,
is there any way to keep a sub matrix dimension?
exemple :
i1-1; i2-1
j1-2; j2-3;
ret -matrix(1,4,4)[i1:i2,j1:j2] ;
dim(ret) is NULL because the submatrix single col or single row is coerce to a
vector automaticaly.
How can i bypass this
I need to specify error terms properly in a mixed-effects anova model. I
know you can add error terms in aov using Error and can specify random
factors in lme but I am not sure how these get treated.
When making the calculations for fixed and random factors, are the correct
error terms used
Dear List,
I need to add a subscript and a superscript to some of the ions in the
labels on some plots.
I have got to here but now I'm stuck:
plot(1:10, xlab = expression(paste(nm SO[4], , mu, eq cm^{-2},
yr^{-1})))
Which gives almost what I require. No matter what I tried, however, I
I am using contour to draw contour lines onto a photo (jpeg) of a leaf on
a white background.
I have two problems:
1) The contour gets plotted at right angles to the jpeg image. I guess
this is a problem of referencing the start and end points of the image
matrix but I can't see how to over
[In future, please press reply all as there might be others in the
mailing list who can help you]
Without a (short) reproducible example, it would be difficult to say.
BTW, I think you have mistyped the error/warning message. Does it
actually say cannot compute _correct_ p-value or cannot
On Wed, 3 Nov 2004, Marc Schwartz wrote:
On Wed, 2004-11-03 at 09:55, Dan Bolser wrote:
This has been asked before, but all the answers are hidiously complex.
The
legend.text=TRUE
option of barplot is almost exactly what I need, except I need a
legend.placement='tl'
(top left)
On Thu, 4 Nov 2004, Gavin Simpson wrote:
Dear List,
I need to add a subscript and a superscript to some of the ions in the
labels on some plots.
I have got to here but now I'm stuck:
plot(1:10, xlab = expression(paste(nm SO[4], , mu, eq cm^{-2},
yr^{-1})))
Which gives almost
Gavin Simpson wrote:
Dear List,
I need to add a subscript and a superscript to some of the ions in the
labels on some plots.
I have got to here but now I'm stuck:
plot(1:10, xlab = expression(paste(nm SO[4], , mu, eq cm^{-2},
yr^{-1})))
Which gives almost what I require. No matter what I
Nathaniel Street [EMAIL PROTECTED] writes:
I need to specify error terms properly in a mixed-effects anova model. I
know you can add error terms in aov using Error and can specify random
factors in lme but I am not sure how these get treated.
When making the calculations for fixed and
Thanks, Tony.
I got a very good idea of using flush in scan() from
your reply, so that I successfully did my little job.
But, my next question arises if I want to extract the
list of the price items only in the 2nd column in my
example.
I did it the following way. Is it the right way to do?
Or do
Dear Andy,
Why does my 'read.table()' NOT work in this example?
I have the error, subscript out of bounds, as you
see below. My R version is 1.9.0.
system(more mtx.ex.1)
i1-apple 10$ New_York
i2-banana 5$ London
i3-strawberry 7$ Japan
read.table(mtx.ex.1,
colClasses=c(character,NULL,NULL),
try:
plot(1:10, xlab = substitute( expression(paste(nm SO[4]^{2-x}, ,
mu, eq cm^{-2}, yr^{-1})),
list(x=) ) )
I have no understanding of why it works, formula fidgeting usually
requires use of subtitute().
Btw. I started out
Hello,
I have run across the following problem:
Creating PDF files manually by using
pdf(version=1.4)
I can make graphs using the new transparency feature of R2.0. If,
however, I try to create the same graphs with Sweave, all transparent
stuff is gone. This os likely due to the default version
On Wed, 3 Nov 2004, Gabor Grothendieck wrote:
Dan Bolser dmb at mrc-dunn.cam.ac.uk writes:
:
: This has been asked before, but all the answers are hidiously complex.
:
: The
:
: legend.text=TRUE
:
: option of barplot is almost exactly what I need, except I need a
:
: legend.placement='tl'
Sorry if this is a question more on regular expressions. I am dealing
with several files which have been badly named. For example the files
are given either the extensions txt, TXT or Txt. I wish to select all
those files ending with 'txt' ignoring case.
Here is how I would do it in bash (Redhat
On Thu, 4 Nov 2004, John wrote:
Dear Andy,
Why does my 'read.table()' NOT work in this example?
I have the error, subscript out of bounds, as you
see below. My R version is 1.9.0.
^
That is your problem. It works in the current version of R, 2.0.0. Using
On Thu, 4 Nov 2004, Gavin Simpson wrote:
Prof Brian Ripley wrote:
On Thu, 4 Nov 2004, Gavin Simpson wrote:
Dear List,
I need to add a subscript and a superscript to some of the ions in the
labels on some plots.
I have got to here but now I'm stuck:
plot(1:10, xlab =
On Thu, 4 Nov 2004, Adaikalavan Ramasamy wrote:
Sorry if this is a question more on regular expressions. I am dealing
with several files which have been badly named. For example the files
are given either the extensions txt, TXT or Txt. I wish to select all
those files ending with 'txt'
On Thu, 4 Nov 2004, Oskar Villani wrote:
Hello list,
I'd like to use a variable (or a column of a data frame) by using its name as a
string. E.g.:
Data2003 - c(150,200,120)
Data2004 - c(145,211,110)
myvar1 - Data2003
myvar2 - Data2004
# now I'd like do do this
total - Data2003 + Data2004
# in any
I expect your version of R was not compiled on your own system, although
you don't say (please see the posting guide). (I also presume this is a
Macintosh but you could have said.)
Prof Ripley, thank you for your answer.
Indeed you are correct in that I was using precompiled R-2.0 on a
Ciprian_Marin at ssga.com writes:
:
: There seem to be a bug in the seq.dates function in the chron package for R
: 2.0. Please see below:
:
: when the specified frequency is months, seq.dates does not return the end
: of the specified interval all the time:
:
: seq.dates(from = 05/31/04, to
Hello, supposing that I have two or three clear categories for my data,
lets say pet preferece across fish, cat, dog. Lets say most people rate
their preference as being mostly one of the categories.
I want to do pca on the data to see three 'groups' of people, one group
for fish, one for cat
Dan:
1) There is no guarantee that PCA will show separate groups, of course, as
that is not its purpose, although it is frequently a side effect.
2) If you were to use a classification method of some sort (discriminant
analysis, neural nets, SVM's, model=based classification, ...), my
Thanks to Sundar Dorai-Raj, Prof. Ripley and Berton Gunter for the
solution. I think I will take Prof. Ripley's suggestion and stick with
my initial solution for code readability but I am sure the regexp stuff
will come handy next time.
On Thu, 2004-11-04 at 15:10, Prof Brian Ripley wrote:
On
On Thu, 4 Nov 2004, Berton Gunter wrote:
Dan:
1) There is no guarantee that PCA will show separate groups, of course, as
that is not its purpose, although it is frequently a side effect.
2) If you were to use a classification method of some sort (discriminant
analysis, neural nets, SVM's,
Hi, I have a problem with R. My R software crashed, so that every time I
restart R I get the message 'Fatal Error: Unable to restore saved data
in .Rdata'. I can re-install R, is it possible to obtain the objects
saved in my workspace or is it a lost cause.
Thanks
Stella
Dan Bolser dmb at mrc-dunn.cam.ac.uk writes:
:
: Hello, supposing that I have two or three clear categories for my data,
: lets say pet preferece across fish, cat, dog. Lets say most people rate
: their preference as being mostly one of the categories.
:
: I want to do pca on the data to see
Please do NOT crosspost!
Please read the posting guide!
This list is intended for *R* related questions.
Uwe Ligges
COMBES Florence wrote:
Dear all,
I have 2 questions maybe more for developpers, and about an S-PLUS script.
I think that people from R and maybe Bioconductor could also help me.
1--
Nathaniel Street wrote:
I am using contour to draw contour lines onto a photo (jpeg) of a leaf on
a white background.
I have two problems:
1) The contour gets plotted at right angles to the jpeg image.
I guess you either haven't realized the ordering of the y axis or you
have created the
Is there an option to draw concentration ellipses in biplots ? It seems
really nice to summarize large number of points of each group.
Cheers../ Murli
__
[EMAIL PROTECTED] mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the
The first release of a new quick reference card for R is available at:
http://www.rpad.org/Rpad/R-refcard.pdf
This is a four-page reference listing common R functions with short
summaries. The reference card contains considerable material from Emmanuel
Paradis's excellent R for Beginners
Hello,
in an experimental field study my collegue made a design with samples on
two manipulated sampling sites (site: control, treatment). Within each
site she sampled 3 traps (trap) at day and night (light: light, dark)
at 3 consecutive days (day).
We applied lme models with abundance as
Hi all,
you can see in the library(ade4).
there is a nice graphical function called #8216;s.class#8217;.
Example for a principal components analysis:
?s.class
data(meaudret)
pca1 - dudi.pca(meaudret$mil, scan = FALSE, nf = 4)
# plot row coordinates
s.class(pca1$li, meaudret$plan$dat, sub =
You can use locator() nested within legend()
i.e.
plot(YourVariable)
legend(locator(1),legend=Your Legend)
Once you call this command it will display Your Legend in the place where
you left clicked your mouse. Beware that, as described in the documentation
...'locator' is only supported on
On Fri, 5 Nov 2004, F Z wrote:
You can use locator() nested within legend()
i.e.
plot(YourVariable)
legend(locator(1),legend=Your Legend)
Once you call this command it will display Your Legend in the place where
you left clicked your mouse. Beware that, as described in the documentation
I am no expert on this sort of matters, but that has never stopped me from
tossing in my $0.02...
As Gabor and Bert hinted, this is what I would try:
Run randomForest on the data, using sampsize=c(10, 10, 10) and
importance=TRUE, for example. Then take the few most important variables
with
R-1.8.0 seems to calculate wrong covariances, when the argument of cov()
is a matrix or a data frame.
The following should produce a matrix of zeroes and NaNs:
x - matrix(c(NA ,NA ,0.9068995 ,NA ,-0.3116229,
-0.0607 ,0.7310134 ,NA ,1.738362 ,0.6276125,
0.6615581
Hi,
On Tue, 2 Nov 2004 15:54:30 +0100, Ale iberna
[EMAIL PROTECTED] wrote:
Does anybody know how to produce a East-European character - c with a
v-shaped hat in R (in text or plot)?
I do know how to get , - s,z, with a v-shaped hat, but not this one.
Thanks in advance for any
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