snubian wrote:
snip
I've noticed a behaviour when using rownames() that I think is odd,
wondering if I'm doing something wrong.
To illustrate, say I create a very simple matrix (called fred):
fred-matrix(,4,2)
It looks like this:
[,1] [,2]
[1,] NA NA
[2,] NA NA
[3,]
Dear R-users,
I'd like to announce the release of the new version of package 'ltm'
(i.e., ltm_0.9-0 soon available from CRAN) for Item Response Theory
analyses. This package provides a flexible framework for analyzing
dichotomous and polytomous data under various IRT models. Furthermore,
Hi
interesting blog!
not strictly relevant, but there are various
number-theoretic functions implemented
in the elliptic package which
you might find useful.
best wishes
Robin
murali.me...@fortisinvestments.com wrote:
Folks,
I put up a brief note describing my naive attempts to compute
Amit Patel wrote:
Hi
I have 2 sets of data that I want to do a Wilcoxon test on. They are of the
same dimension. One has 4 zero values and the other has 5.
dim(SampA)
[1] 1 10
dim(SampV)
[1] 1 10
I get the folowing error
Error in wilcox.test.default(SampA, SampV, na.rm
Hi,
I have a data set that I read in using readLines, but R classes it as a
character string. The data set has multiple columns and rows, but I only want
the first 2 columns in the form of a matrix. Thanks for the help.
[[alternative HTML version deleted]]
This is a Mac-specific issue, as you are installing binary packages.
The real error message was
/bin/sh: line 1: tar: command not found
so the problem is that tar is not in your path. I've no idea how that
would come to be (all Macs I have used had /usr/bin/tar), so please
ask on
markle...@verizon.net wrote:
can someone show me how to use a regular expression to break the
string at the bottom up into its three components :
(-0.791,-0.263]
(-38,-1.24]
(0.96,2.43]
I tried to use strplit because of my regexpitis ( it's not curable.
i've been to many doctors all over
Bob Roberts quagmire54321 at yahoo.com writes:
I have a data set that I read in using readLines, but R classes it as a
character string. The data set has
multiple columns and rows, but I only want the first 2 columns in the form of
a matrix. Thanks for the help.
data(CO2)
str(CO2)
col2 =
ahmet kocyigit kh3l at hotmail.com writes:
I'm a newbie to R and will work on it from now. I'm preparing my thesis based
on rpart and RWeka.
I've managed to run already existing test data but couldn't import a data set
from out of R.
There is a special Export/Import manual R-data.pdf in
Wacek Kusnierczyk wrote:
markle...@verizon.net wrote:
can someone show me how to use a regular expression to break the
string at the bottom up into its three components :
(-0.791,-0.263]
(-38,-1.24]
(0.96,2.43]
I tried to use strplit because of my regexpitis ( it's not curable.
i've been
Hi all,
I am writing to announce the creation of a new R
mailing list: R-help-es. It is going to be a list for spanish speakers
users of R so I am sorry to write the rest of the email in spanish.
Os escribo para anunciaros que hemos creado una nueva
lista de correo llamada R-help-es para
Ajay,
I think this is somewhat unnecessary!
For regular SAS users PROC SUMMARY/MEANS is the data manipulation staple. A
SAS user interested in R will look at Intro to R and find it recommends
tapply for data manipulation jobs. This is a problem - tapply just isn't
simple and obvious.
A better
Ajay ohri wrote:
for an inefficient language , it sure has dominated the predictive
analytics world for 3 plus decades.
I referred once to intellectual jealousy between newton and liebnitz.
i am going ahead and creating the R package called Anne.
If you want to market this, Ajay, I'd
Ok. Basically everything that SAS can do, R can do, but vice versa isnt
true.
using the Anne package just renames the functions into standardized data
and proc steps for user comfort.
Once SAS user finds that R is productive , and useful and even more powerful
for even less money, he can unload
Hallo
Here is my final solution, but i still wonder if it could not be
improved somehow.
fit - modely(fol, data.frame(x=x, y=y1)
fit
or
fit - modely(fol, data.frame(x=x, y=y2)
fit
shows that it arrives to some results. However selection starting values
as means of response variable seems to
no market for R packages exists in true economic sense
as there is demand and supply and utility but no price
Ajay
Did Tom Sawyer create the first collaborative project ever ( to paint the
fence ?)
On Tue, Mar 3, 2009 at 4:24 PM, Jim Lemon j...@bitwrit.com.au wrote:
Ajay ohri wrote:
for
Is there a way to prevent write.csv to transform the column names a la
make.names? I mean, if I write the code:
x - structure (NULL)
x [[a+b]] - c (1,2)
write.csv (x, file = foo.csv, row.names = FALSE, quote = FALSE)
I get in foo.csv:
a.b
1
2
but I want:
a+b
1
2
Any suggestions?
There's an example at the end of the pcls help file in version 1.5-0 --- just
submitted to CRAN.
best,
Simon
On Wednesday 25 February 2009 18:48, Benjamin Tyner wrote:
Hi,
Does anyone know how to fit a GAM where one or more smooth terms are
constrained to be monotonic, in the presence of by
sort.df() in the reshape packge.
cheers,
Paul
R User R User wrote:
Hi all,
I'd appreciate your help with this problem.
I need to plot a barplot with the categories in a specific order. My data
might be:
hours Freq
AN 10
MO 14
LU 30
I need the categories to be in the order:
MO
Dear all,
I very often use the R function apply, for speedup purposes. I am now also
using MATLAB, and would like to use the same kind of function.
I have already asked MATLAB people, and the answer is : vectorize... but of
course, this is not always possible. So, instead of using
a FOR loop all
Dear list,
I read the SOM package manual but I don't understand how to perform (for
example) 1) the SOM analysis on Iris data 2) with a visualization similar to
that of figure 7 in
http://www.cis.hut.fi/projects/somtoolbox/package/papers/techrep.pdf
Any suggestion? Thanks in advance,
Gianandrea
You are right. In my case it doesn´t make much difference since the mean
of my covariates is about 0.
I made some more plots and again I´m confused. I thought when forcing
all covariates via the newdata argument to be zero I would get the
baseline function since the linear predictor is then
2009/3/3 Jim Lemon j...@bitwrit.com.au:
Ajay ohri wrote:
for an inefficient language , it sure has dominated the predictive
analytics world for 3 plus decades.
I referred once to intellectual jealousy between newton and liebnitz.
i am going ahead and creating the R package called Anne.
Here are two solutions using gsubfn package.
strapply works by matching the what you want
rather than what you don't want which may make
it easier in this case. The two solutions are the
same except we use \\ escapes in the first and
[ ... ] in the second, i.e. \\( has the same effect
as [(].
Hello, everyone
I have a zoo object containing several time series of daily frequency.
One of these timeseries is an indicator function with value (-1) at
certain times, and (+1) at the other.
I do a plot of several of the timeseries in one go (a multiple plot).
I wonder if I can automatically in
Hiii,
I have some problems to plot standard deviation and variance from a
texfile.
Ich have the following code so far:
x -read.table(file=new.txt)
x$gruppe - 100*rep(1:36, each=20)
png(filename = D:/Uni/new.png, width = 640, height = 480,pointsize = 12,
bg = white)
boxplot(V3 ~ gruppe,
reverend33 wrote:
I'm sorry, maybe i didn't explain clearly: i'm trying to install
xlsReadWrite on a Linux-type OS (Ubuntu)...
I think you didn't understand the answers: the package is only available
under Windows.
cheers
Ben Bolker
--
View this message in context:
Why aren't you using 'read.table'?
On Tue, Mar 3, 2009 at 3:47 AM, Bob Roberts quagmire54...@yahoo.com wrote:
Hi,
I have a data set that I read in using readLines, but R classes it as a
character string. The data set has multiple columns and rows, but I only want
the first 2 columns in
Are you trying to color the points themselves? This plots the
first two series in frame 1 (they are the same but one is plotted
as points and the other as a line) and the third series is shown
in frame 2 and for the series of points it colors them green or red.
The lines are all colored black:
If your purpose is to read Excel spreadsheets on Linux read.xls in the gdata
packages can do that. It uses perl software underneath which is portable
across systems.
On Tue, Mar 3, 2009 at 7:38 AM, reverend33 periac_r...@hotmail.com wrote:
I'm sorry, maybe i didn't explain clearly: i'm trying
Hi, Gabor
No, what I am trying to do is similar to:
abline(v=time(spread)[spread[,Indicator]==(-1)], col=yellow),
where spread is the multivariate zoo object (say, 5 timeseries).
That is, I want to color parts of the plots where indicator==(-1), but
do the coloring
without using layout() and
You perhaps missed the key point in Uwe's response, which is that the
package is only available under Windows, as it depends upon Windows
specific functionality (MS Office API via a third party library which is
available for Windows only) to natively read and write Excel files.
Thus, there is no
ekwaters wrote:
b12=log(.4/.6)
b13=log(.85/.15)
Can you point out the syntax errors in the first one?
You have a double caret (^^).
f(k) should be f[k]
Watch out for raising numbers to such large powers
(although to my surprise things didn't over/underflow
when I tried your
Ajay ohri wrote:
for an inefficient language , it sure has dominated the predictive
analytics world for 3 plus decades.
I referred once to intellectual jealousy between newton and liebnitz.
i am going ahead and creating the R package called Anne.
It basically is meant only for SAS users who
Do you mean you want to shade a portion of the plot?
There are two examples of that in the examples section of ?plot.zoo
and a further example using xyplot.zoo in the examples section of
?xyplot.zoo
On Tue, Mar 3, 2009 at 8:37 AM, Sergey Goriatchev serg...@gmail.com wrote:
Hi, Gabor
No, what
Dear Paul,
I encountered this problem the other day, and it went away when I updated
the foreign package from version 0.8-32 to 0.8-33.
I hope this helps,
John
--
John Fox, Professor
Department of Sociology
McMaster University
Hamilton, Ontario, Canada
web:
Dear Dwayne,
I didn't see your post until now, because our email system was down all day
yesterday.
Mark Difford has already pointed your towards the cr.plots() and
ceres.plots() functions in the car package.
In your description of what you want to do, you mention the adjusted
explanatory
I think in this case its better use the write.csv. Microsoft Excel reads csv
files normally.
Atenciosamente,
Leandro Lins Marino
Centro de Avaliação
Fundação CESGRANRIO
Rua Santa Alexandrina, 1011 - 2º andar
Rio de Janeiro, RJ - CEP: 20261-903
R (21) 2103-9600 R.:236
( (21) 8777-7907
(
Hi all,
I would like to transform to long format a matrix which has only
information about individuals and a value for each individual. I would like
to have it in ling format with more information related to groups, so ell
values and individuals are repeated for each group. Let me show the
That is fine if you only have one or two R objects to write out to CSV
files and then read them into Excel. It becomes rapidly tedious as the
number of objects increases.
If you go back and read my original post, the incentive for me to write
the Perl routine was that I had to create an Excel
Gabor, yes, I want to color portions of EACH plot of the MULTIPLE plot
done with plot.zoo()
I tried to do:
plot(multivariate zoo object)
abline(v=...)
but that does not work.
I will check your suggestions of the examples.
Thank you for your help, as always!
Best,
Sergey
On Tue, Mar 3, 2009 at
check out the melt function in the reshape package.
On Tue, Mar 3, 2009 at 8:53 AM, Usuario R r.user.sp...@gmail.com wrote:
Hi all,
I would like to transform to long format a matrix which has only
information about individuals and a value for each individual. I would like
to have it in ling
There is a recently updated review of the alternatives on the R Wiki:
http://wiki.r-project.org/rwiki/doku.php?id=tips:data-io:ms_windows
On Tue, Mar 3, 2009 at 9:00 AM, Marc Schwartz marc_schwa...@comcast.net wrote:
That is fine if you only have one or two R objects to write out to CSV
files
On 3 March 2009 at 07:38, Marc Schwartz wrote:
| You perhaps missed the key point in Uwe's response, which is that the
| package is only available under Windows, as it depends upon Windows
| specific functionality (MS Office API via a third party library which is
| available for Windows only) to
On Mar 3, 9:58 am, Ajay ohri ohri2...@gmail.com wrote:
for an inefficient language , it sure has dominated the predictive
analytics world for 3 plus decades.
I referred once to intellectual jealousy between newton and liebnitz.
i am going ahead and creating the R package called Anne.
It
* Uwe Ligges lig...@statistik.tu-dortmund.de [2009-03-03 15:27]:
Rafael Laboissiere wrote:
Is there a way to prevent write.csv to transform the column names a la
make.names? I mean, if I write the code:
x - structure (NULL)
x [[a+b]] - c (1,2)
write.csv (x, file = foo.csv,
If you have many such repetitions it can be annoying to type the
rbind(cbind ... sequence. Perhaps this would help,
m - read.table(textConnection(
IndividualsValue
A3
B4
C5
D2), head=T)
data.frame(groups= rep(c(group1, group2, group3),
each=nrow(m)), Ind=m[, 1],
Supreme!
Thanks Gabor!
On Tue, Mar 3, 2009 at 15:20, Gabor Grothendieck
ggrothendi...@gmail.com wrote:
If you want to use abline on a multivariate plot it must be issued
within a panel function like this:
# same set up as in prior email
p - function(x, y, ...) { points(x, y); lines(x, y);
Just a friendly reminder that the closing date for abstract submissions
for the DSC conference in Copenhagen is next Sunday.
See
http://www.r-project.org/dsc-2009
Notice that the website has been revised since we decided to engage a
professional convention bureau. The good news is that payment
Dear useRs,
Over the last few years R has gained a significant momentum in the
insurance industry. Dedicated packages have been written, numerous
presentations given, courses held, businesses set up, and IT
departments convinced. ;-)
Therefore, together with Markus Gesmann of Lloyd's of
why didnt you call it procunivariate if that was exactly what you wanted to
do .
On Tue, Mar 3, 2009 at 7:11 PM, Frank E Harrell Jr f.harr...@vanderbilt.edu
wrote:
Ajay ohri wrote:
for an inefficient language , it sure has dominated the predictive
analytics world for 3 plus decades.
I think SAS Macros has capability to call R, and execute it without it
being in the picture anywhere.
So you can use SAS Macros in a file called R.sas
In this you can create a macro called %Describe that can call R , load Hmisc
,run the describe function
Note you will need repeated use of
Hello,
can any one point me to R-packages (if available) which include spatial
Markov Chain methods?
My second question is more general but hopefully not OT: Currently we
are using the software TPROGS, which let people simulate property
distributions in space by some Markov Chain approaches.
Thanks a lot for all your answers.
Indeed, i hadn't understood the previous answers.
I just downloaded the gdata package and it works perfectly now.
Thanks again.
Gabor Grothendieck wrote:
If your purpose is to read Excel spreadsheets on Linux read.xls in the
gdata
packages can do
Dear collegues,
I´ ve worked with near infrared (NIR) spectroscopy to assess chemical,
physical, mechanical and anatomical properties of wood.
I use The Unscrambler software to correlate the matrix of dependent
variables (Y) with the matrix of spectral data (X) and I would like to
migrate to R.
Hi list,
I wonder if anyone has had this experience with squishplot() in the
TeachingDemos package.
Taking the example from the ?image help page,
library(TeachingDemos)
x - 10*(1:nrow(volcano))
y - 10*(1:ncol(volcano))
layout(matrix(c(1,2,3,4),ncol=2,byrow=TRUE),height=c(2,1))
## 1st plot
op
Dear Gavin,
What is the interpretation of a simulated p-value of 1 in a mantel
test and how is the p-value derived? When we run two highly
negatively correlated matrices we get this result: r: -1, simulated p
value: 1
I would expect the high p-value of 1 to mean not significant. Could
Hi List,
I would like to compare two (confusion) matrices. I ended up with the
ade4 mantel.rtest function as my best option. However it seems that my
data is non-euclidean in nature (is.euclid gives a FALSE). I attached
both matrices at the end of the document.
Are there any tools to
I'm not Gavin, but since you posted this to the R-help list I assume you
are open to other respondents.
Since you are asking Gavin, I assume you are using mantel() from the
vegan package (it's a good idea to specify, as there are other possibilities).
The help for that function explains the
Hi,
For the Mantel test, your matrices do not need to be Euclidean, but they
do need to be symmetric. You could write a similar test that does not
require a symmetric matrix, though.
Sarah
On Tue, Mar 3, 2009 at 11:40 AM, Koen Hufkens koen.hufk...@ua.ac.be wrote:
Hi List,
I would like to
Dear members of the list,
I'm a beginner in R and I'm having some trouble with: Error in
optim(init[mask], armafn, method = BFGS, hessian = TRUE, control =
optim.control, :
non-finite finite-difference value [8]
when running arima.
I've seen that some people have come accross the same
Ajay ohri wrote:
why didnt you call it procunivariate if that was exactly what you wanted
to do .
Why would I ever do that? describe is a improvement on univariate,
saving an estimated 87 +/- 87 trees per year in paper by printing what
you need in much less space and concentrating on
Dear all,
I just realized that using family=qgauss restores normal-looking
confidence bands... I read that using family=gaussian rather than
family=qgauss fixes the dispersion parameter at 1, but without knowing
the theory behind the code, I dont understand why there is such a
What is the best way to produce a barplot from my data? I would like
the barplot to show each person with the values stacked
val1+val2+val3, so there is one bar for each person When I use
barplot(data.matrix(realdata)), it shows one bar for each value
instead.
To post here, I created an
Hello,
I'm using geom_hline to add a minimum line to my plot (representing
the best solution found so far by a search algorithm). I'd like to
annotate this line with it's numerical value to save trying to read it
off the graph, but I can't see a clear way to do this - any ideas?
Hey, Dorothee. SEM does not use the S-B chi squared index. If you want to
use it, however, I have some methods written for the Satorra-Bentler Chi
Square test in the sem.additions package over at r-forge.
To install it directly within R type
What's wrong with geom_text?
my.value = 0.65
qplot(1,1)+geom_hline(v=0)+
geom_text(mapping=aes(x=1,y=0),label=paste(my.value),vjust=-1)
baptiste
On 3 Mar 2009, at 18:10, Dave Murray-Rust wrote:
Hello,
I'm using geom_hline to add a minimum line to my plot (representing
the best
Dear colegues
I am trying to analyze growth data on mice. To do this I attempted to fit
logistic curve using nlme package. However, the dataset I use is large (in
total ca 20 000 measures on ca 3 000 individuals) with relatively complicated
structure (several explanatory variables with
I think you should read (or re-read) the locfit help page and *also*
the links from that page to the help pages for locfit.raw and rv. I
would have thought that since family= is not an argument to locfit per
se, but rather is documented in locfit.raw that you have yet done so,
but perhaps
Hi R Users,
I have a dataframe like this:
id x rho
A 1 0.1
B 20 0.5
C 2 0.9
...
I want to do a scatter plot of x versus rho but for each point on the
scatter plot I want the corresponding entry for id instead of points. In
STATA I can do so by
twoway (scatter x rho, mlabel(id))
How
From: Suresh Krishna
[...]
ps. The package maintainer, Catherine Loader, is no longer
reachable at
her Auckland address.
For the record, I'm the package maintainer for locfit, and I have not
exactly vanished (yet). Please see the package description.
That said, it doesn't mean I know all
Hi R users,
I am using built-in functions in igraph package to draw networks . I need
to compare several network with exactly the same structure but with edge
hightlighted differently. I am wondering if there is a way to save the
layout so that every graph will look the same as each other
rgl_0.83-3 did not help
Duncan Murdoch wrote:
On 3/2/2009 2:48 PM, chaogai wrote:
Oops, sorry
R version 2.8.1 (2008-12-22)
i686-pc-linux-gnu
locale:
On 3/03/2009, at 5:58 PM, Ajay ohri wrote:
for an inefficient language , it sure has dominated the predictive
analytics world for 3 plus decades.
I referred once to intellectual jealousy between newton and liebnitz.
i am going ahead and creating the R package called Anne.
It basically is
Shukai,
the layout functions return a matrix that you can supply as the
'layout' argument of the plotting functions, e.g.
g1 - erdos.renyi.game(50,2/50)
lay - layout.fruchterman.reingold(g1)
g2 - delete.edges(g1, sample(ecount(g1), 30)-1)
plot(g1, layout=lay, vertex.size=10)
plot(g2, layout=lay,
On 3 Mar 2009, at 18:41, baptiste auguie wrote:
What's wrong with geom_text?
my.value = 0.65
qplot(1,1)+geom_hline(v=0)+
geom_text(mapping=aes(x=1,y=0),label=paste(my.value),vjust=-1)
Well, firstly I hadn't thought to use it. Ooops.
Secondly, I can't make it just do a single
RE: par and a substitute for mtext to write one time a title per page
Hi,
Q1. Is there way I can set mfg =c(2,1) which for me could have meant 2
pages and no split on the columns per page; and mfrow =c(4,1) which for
me it means 4 graphs per page in
I have 3 questions (below).
Background: I am teaching an introductory statistics course in which we are
covering (among other things) repeated measures anova. This time around
teaching it, we are using R for all of our computations. We are starting by
covering the univariate approach to repeated
David Winsemis wrote:
I think you should read (or re-read) the locfit help page and *also*
the links from that page to the help pages for locfit.raw and rv. I
would have thought that since family= is not an argument to locfit per
se, but rather is documented in locfit.raw that you have
Hello,
I do not think that is the way to go. If you believe that your algorithm
is better than the existing one, talk to the author of the package and
discuss the improvement. The whole community will benefit.
If you want to tune the existing function and tailor it to your needs,
you have
On 4/03/2009, at 4:36 AM, Torsten Lange wrote:
Hello,
can any one point me to R-packages (if available) which include
spatial
Markov Chain methods?
My second question is more general but hopefully not OT: Currently we
are using the software TPROGS, which let people simulate property
2009/3/2 Prof Brian Ripley rip...@stats.ox.ac.uk:
The CRAN Windows ones. It is a windows-only package, see
http://cran.r-project.org/web/packages/xlsReadWrite/index.html
(incidentally to you: it seems no longer maintained and does not build under
R-devel on Windows, see
On 4/03/2009, at 2:38 AM, Marc Schwartz wrote:
You perhaps missed the key point in Uwe's response, which is that the
package is only available under Windows, as it depends upon Windows
specific functionality (MS Office API via a third party library
which is
available for Windows only) to
I see your problem (although label should be outside the mapping in
your case, i think).
A possible workaround is to provide some dummy data, as the default
NULL doesn't seem to work,
qplot( wt, mpg, data=mtcars ) +
geom_text(data=data.frame(x=0,y=0),mapping=aes(x=1,y=0),label=test)
I'm
Paul Gribble wrote:
I have 3 questions (below).
Background: I am teaching an introductory statistics course in which we are
covering (among other things) repeated measures anova. This time around
teaching it, we are using R for all of our computations. We are starting by
covering the univariate
That is what I thought to be the critical paragraph. The variance is
assumed to be = 1 when you use family=gaussian rather than the
default of family=qgauss. You give it a vector, 1000*rnorm(100),
that ranges widely and a small (relative) variance is assumed and so
the confidence intervals
I am running the sm.density.compare function amd I am getting the following
error:
my code is sm.density.compare(LBSTRESN,COHORT,xlab=Units = umol/Lsubset =
LBTEST==Creatinine)
Error in if (from == to) rep.int(from, length.out) else as.vector(c(from, :
missing value where TRUE/FALSE
Rolf Turner schrieb:
On 4/03/2009, at 4:36 AM, Torsten Lange wrote:
Hello,
can any one point me to R-packages (if available) which include spatial
Markov Chain methods?
My second question is more general but hopefully not OT: Currently we
are using the software TPROGS, which let people
Have a look at
http://cran.r-project.org/doc/Rnews/Rnews_2007-2.pdf
Wow. I think my students would keel over.
Anova() from the car package looks promising - I will check it out. Thanks
On Tue, Mar 3, 2009 at 4:00 PM, Peter Dalgaard p.dalga...@biostat.ku.dkwrote:
Paul Gribble wrote:
I
Hmm,
Reading some responses in the archives on mfg, the first one was simple
the mfg does not control the pages.
After removing mfg=c(2,1), and leaving in the program only mfrow=(4,1)
although I am printing one after the other in a loop, pages are printed
and do not overwrite the same page.
Dipankar Basu basu.15 at gmail.com writes:
Hi R Users,
I have a dataframe like this:
id x rho
A 1 0.1
B 20 0.5
C 2 0.9
...
I want to do a scatter plot of x versus rho but for each point on the
scatter plot I want the corresponding entry for id instead of points.
test
EditPad Pro is commercial, which makes it a nonchoice for recommending
it to my students.
I recently switched from tinn-R to Notepad++ with NppToR and am quite
happy with it. tinn-R is quite good, but possibly the project is
getting too ambitous now. It needs quite some fiddling with
Rprofile.site
Hi friends,
How to detect outliers and high leverage points for GLM ?
Could I use plot(model)
(i) Residuals vs Fitted graph to detect the outliers ?
(ii) Residuals vs Leverage graph to detect the high leverage points ?
And then remove those points from the data and re-run the model ?
Hello everyone
I tried to use clust function using hclustWard clustering method
The distance mesaured I have used is rf
The data used is in the form of data frame (it is not a distance matrix) -
sd.df
The piece of code I have used is:
c1 - clust(sd.df,k=6,method=hclustWard,distMethod=rf)
But I
Dieter == Dieter Menne dieter.me...@menne-biomed.de writes:
And, since my son asked me and I am basketball ignorant:
Why are basketball scores mostly much too close to
equality? The arguments (loose power when leading) might
suggest that 2:0 might not be significant, but
I have a graph (a curve with a x- and y-axis) on paper. (The device from
which I receive this is not able to output the data digitally
unfortunately.) Is there a procedure by which I can scan the graph, save it
into, e.g., a bitmap file and make it R to read this file into x
Check out
http://www.datathief.org/
Remko
-
Remko Duursma
Post-Doctoral Fellow
Centre for Plant and Food Science
University of Western Sydney
Hawkesbury Campus
Richmond NSW 2753
Dept of Biological Science
Macquarie University
North Ryde NSW
Hello -
I am currently simulating bivariate AR(1) time series data and have the
following line in my code:
Px=spec.pgram(ts.union(X,XX),spans=c(?,?))
The spans option is where I enter in the vector containing the Daniell
smoother numbers, but I don't know what a Daniell smoother is (hence the
Remko Duursma wrote:
Check out
http://www.datathief.org/
Remko
For Linux I recommend the engauge-digitizer package.
Frank
-
Remko Duursma
Post-Doctoral Fellow
Centre for Plant and Food Science
University of Western Sydney
Hawkesbury Campus
re post from
bkelcey at umich.edu bkelcey at umich.edu
Wed Feb 27 15:09:48 CET 2008
If the response y is given as the proportion of successes out of n trials,
and y, n, p, x, and z are vectors of length M, and the model is logit(p) =
b0 + b1*x + b2*z then for the score test for the null
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