Displaying 20 results from an estimated 20000 matches similar to: "FAQ/Website problems (PR#2840)"
2003 Sep 24
5
splitting clusters
Hi All:
I am clustering 500 genes using hclust of R. Visualizing cluster
membership becomes difficult with so many genes in each cluster...Is there
a way of printing the dendrogram in multiple pages so that I can clearly
see what is in each cluster?
Thanks in advance.
Karthi.
2003 Sep 26
2
Spam-Filter @stat.math.ethz.ch: was dead for about 15 hours
As many of you have probably realized, the spam filtering
at @stat.math.ethz.ch has been dead for since yesterday (09-25)
~16:50 till today ~08:30.
The sudden death may have been caused by unrelated installation
of some perl modules (spamassassin *is* running on perl) by our
IT staff.
We are very sorry for this event.
On the bright side: You have been able to get a glimpse of what
you are
2003 Oct 19
2
Bagplot
Has anyone ported the Bagplot function by Rousseeuw, Ruts, and Tukey from S
to R? The S function comprises a script and a FORTRAN function. I assume
porting is relatively uncomplicated, but since I have not done any porting
before I would not want to invest the effort if a port is readily available.
2004 Jan 21
2
derivative of atan(x) and similar functions
Dear R experts.
'D()' function recognizes some of the analitical functions, such as
sin, cos, etc. But I'd like to take analytical derivatives from asin,
atan etc. functions. Are there any R packages providing that features?
Thanks.
--
Timur.
2002 Nov 14
2
R mailing lists: move from majordomo to [procmail+mailman]
We have locally collected good experience the last few weeks
using procmail-spam filtering, inclduing spamassassin to the
procmail filters.
The last two spams that went past the majordomo filters (the
"traditional ones I've been using) through to R-devel both were not
delivered to me, be but caught by the filters.
I have now collected a bit more of a week experience using the
new scheme
2003 Jan 07
2
Extracting means for given strata from dissimilarity object
Is there a way of extracting mean distance or dissimilarity for a given
strata from a 'dist' or 'dissimilarity' object, e.g. extract mean distances
for each species in Anderson's iris data?
data(iris)
iris.dist<-dist(iris[,1:4])
then what?
Mikkel Grum, PhD
Genetic Diversity Scientist
International Plant Genetic Resources Institute (IPGRI)
Sub-Saharan Africa Group
***
2003 Feb 24
2
"trace" argument in legend() (PR#2578)
Full_Name: Jerome Asselin
Version: 1.6.2
OS: RedHat Linux 7.2
Submission from: (NULL) (142.103.173.179)
Should be an easy fix...
Consider the examble below:
plot(0,0)
legend(0,0,c("Hello!","Hi!"),pch=1:2,lty=1:2,trace=T)
It gives the following trace:
> plot(0,0)
> legend(0,0,c("Hello!","Hi!"),pch=1:2,lty=1:2,trace=T)
xchar= 0.05178 ;
2003 Sep 03
3
read.table: check.names arg - feature request
Hi,
I thought it would be convenient if the check.names argument to read.table, which currently can only be TRUE/FALSE, could take a function value as well. If the function is supplied it should be used instead of the default make.names.
Here is an example where it can come in handy. I tend to keep my data in coma-separated files with a header line. The header line is prefixed with a comment
2002 Oct 22
2
Draw ellipses in S-PLUS or R?
Dear S-PLUS/R users:
Do you know any default function or a user contributed function that
can draw an ellipse with given axes and origin? Thanks for any help.
Paul.
--
Romance, like alcohol, should be enjoyed, but should not be allowed to
become necessary.
-- Edgar Friedenberg
-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-
r-help mailing list --
2003 May 21
1
Publication/Reference
Dear List,
this may be a little off-topic, but I failed to obtain the "mother of
R"-reference through a couple of library services...
Maybe someone can provide me with a PDF?
Ross Ihaka and Robert Gentleman.
R: A language for data analysis and graphics.
Journal of Computational and Graphical Statistics, 5(3):299-314, 1996
Helmut Schuetz
Biokinet GmbH
A-1170 Vienna
Tel +43(0)1
2003 Feb 28
1
Concerning the clustering tree
Dear Stuff,
I am trying to enjoy "PAM", but I could not recognize which sample is in
which branches in the clustering tree because of too many samples and size
limitation for my monitor.
I mean, I did unsupervised clustering with "PAM" (
data2$newy<-pamr.makeclasses(data2) ) with 275 primary samples,
but samples were piled up at the point of each branch, so I cannot
2002 Oct 22
2
cubic spline smoothers with heterogeneous variances
Hello. I have data (plant weights over time) that are non-linear and in
which the variance increases over time. I have to estimate the first
derivatives of plant weight given time (i.e. growth rate) and their se,
using a regression smoother, and I have been considering cubic spline
smoothers. However, I do not know if this can be done given that the error
variance would increase over time.
2002 Jan 08
3
colour coding and different point types in a plot
I'm trying to plot four different sorghum types on a plot using a different
colour/symbol combination for each sorghum type (TYPBOTA in the script
below). What am I doing wrong?:
plot(xx$LATITUDE,xx$SFD1,
points(xx$SFD1,xx$LATITUDE,
col=1:4[codes(xx$TYPBOTA)],pch=c(4,3,1,2)[codes(xx$TYPBOTA)])
grid()
I get the following error message
Error in 1:4[codes(xx$TYPBOTA)] : NA/NaN argument
2003 Jan 08
2
Undocumented bahavior of as.integer() (PR#2430)
as.integer() truncates doubles toward zero, as Splus does (at least v. 6.1
under Windows does). Thus:
> look <- (10 * seq(14)) - 76
> 10 * (73.1 + look)
[1] 71 171 271 371 491 586 681 791 886 981 1101 1201 1301 1401
> as.integer(10 * (73.1 + look))
[1] 70 170 270 370 490 586 681 791 886 981 1101 1201 1301 1401
... It is not documented in R! I propose appending
2002 Jan 07
3
cluster - clusplot.default (PR#1249)
The following code in clusplot.default (package cluster) is in error:
x1 <- cmdscale(x, k = 2, eig = TRUE)
var.dec <- sum(x1$eig)/sum(diag(x1$x))
if (var.dec < 0)
var.dec <- 0
if (var.dec > 1)
var.dec <- 1
x1 <- x1$points
x1 has components with names "points" and "eig", not "x", so
2003 Jun 16
3
Constrained optimization
Greetings, R-Wizards:
I'm trying to find an extremum subject to a nonlinear constraint. (Yes, I
have perused the archives but have found nothing positive.) The details of
the problem are these:
In a paper published some years ago in Technometrics, ("Confidence bands for
cumulative distribution functions of continuous random variables"
Technometrics, 25, 77-86. 1983), Cheng and
2002 Dec 17
3
Changing "..." inside a function: impossible? desirable?
This is was something like a request for your comments, thoughts
on the topic...
Many of you will know that the "..." (aka \dots) argument is
very useful for passing ``further graphical parameters'',
but can be a pain when itself is passed to too many plotting
functions inside your own function.
An artificial example being
myplot <- function(x,y, ...) {
plot(0:1, 0:1,
2002 Jun 19
4
drawing ellipses
Hello again,
First I want to thank all the people who answered my question about line
width in graphs. I promise I will learn the 'par' help page by heart for
the end of the month !
I now want to trace some ellipses to emphasize groups of data. I found how
to trace circles with 'symbols()', but no ellipse. I'm planning on writing
my own function based on
2003 Sep 11
1
rank(*) with NAs -- new option "keep" desired
In some contexts, I find the current behavior of rank() very
`suboptimal'.
We have the argument na.last = {TRUE | FALSE | NA }
where the first two cases treating NAs (almost) as if they were
== +Inf or == -Inf whereas the 3rd case just drops NAs.
For the typical ``Rank Transformation'' that is recommended in
EDA in several contexts, I would however want something else,
namely keep
2003 Aug 15
6
plot.lm mislabels points with na.exclude (PR#3750)
R 1.7.1 on Windows XP
The "normal Q-Q plot" produced by plot.lm() mislabels points
when the model is fitted using na.action=na.exclude. Example:
x <- 1:50
y <- x + rnorm(50)
y[c(5,10,15)] <- NA # insert some NA's
y[40] <- 50 # add an outlier
plot(lm(y ~ x, na.action=na.omit)) # outlier correctly labeled in all
# four plots