 | | | rhelp | | I am running some models (for the first time) using rpart and am getting
results I don 't know how to interpret. I 'm using cross-validation to prune
the tree and the results look like
Root node errHi
I tried to install a package using the menu option and was presented a list
filled with NA 's.
I then tried visiting the R site and each option on the side bar (eg. CRAN
Search FAQ) sends me t "Anne York " <york@(protected) > wrote in message
news Pine.LNX.4.62.0503261316330.2758@(protected)
> par(mfrow c(2 3)) #set up 2 rows x 3 colums
> plot(1 10) #plot 1
> plot(1 10) #plot 2
> plot(Dear R users
I have a data generated as the following
dat <- data.frame(matrix(sample(24) nrow 4))
dimnames(dat) <-list(rownames c( 'g1 ' 'g2 ' 'g3 ' 'g4 ') colnames c( "A_CH1 " "A_CH2 " "B_CH1 " "BDear all
I would like to use the PLS method to reduce the dimension of my data
because there are much more variables that individuals. I looked at the
pcr.pls package. Do someone know if there is Jo
It looks like farm is your level of replication so you don 't need to
specify farm as a random factor. A linear model 'lm ' with binomial errors
(a.k.a. logistic regression) is enough. You onlHi all
I have to calculate an expression using acos -function. A strange
result of acos appears
*1. case with error*
ss <- sin(10.74*pi/180)**2
+(cos(10.74*pi/180)*cos(10.74*pi/180)*cosHello all
I 'm a new user of R and I have used the spdep package to calculate Moran 's I estimates. I used the dnearneigh() function and moran.test() function and obtained what I wanted but now I waDear all
How do I make R show the R-squared (deviance explained by the model) in
a logistic regression?
Below is how I write my syntax. Basically I want to investigate
density-dependence in pGreetings!
OS Windows
R 2.0.1
Before anyone flames -- I tried to query this on the R searchable web site
and using google and did not find anything applicable.
As of about a week ago the hI have the data similar to the following in a data frame
LastName Department Salary
1 Johnson IT 56000
2 James HR 54223
3 Howe Finance 80000
4 Hi
Is there anyone can tell me how to estimate baseline cumulative hazard function and baseline survival function
by using Breslow 's method in R?
Thanks
Jimmy
[[alternative HTML version d
Hi.
Can anyone suggest a simple way to obtain in R a list of vector
coordinates of the following form? The code below is Mathematica.
In[5]
Flatten[Table[{i j k} {iDear List
As a way to learn R I am trying out some of the
examples shown in the Reference Cards.
I use the following to read a column of numbers from
Excel
x <- read.delim( "clipboard ")
I am trying to fit a linear mixed model of the form
y_ij X_ij \beta + delta_i + e_ij
where e_ij ~N(0 s^2_ij) with s_ij known
and delta_i~N(0 tau^2)
I looked at the ecme routine in package Online short course Modeling in R
Dr. Phillip Good will offer the short course "Modeling in R " online at
statistics.com April 8-29 2005.
This 3-week course will show you how to use R to creaAll
I 'm having a problem connecting to an MS SQL Database via RODBC on OS
X. If I try to connect through the GUI using chan <-
odbcConnect( "drewdb " uid "user " pwd "pwd ") it simply crashes R Hi All
Are there times when random forests should not be used as a
classification or regression model for determining variable importance.
If so then is it the properties of the training datDear list
Not strictly R ...
In R on Xemacs with ESS (R-2.0.1 Xemacs-21.4.15-r3 ESS-5.2.6)
on gentoo-linux
when I use k <-edit(k) or fix(k)
to change a small vector k <- c(1 2 3 4 5 6)
Dear experts
I am asking for help with a question regarding to stratified bootstrap. How
shall I implement my stratified bootstrap in boot() using boot package in R?
My dataset is a longitudinal
I am looking a risk factors for disease in cattle and am interested in modelling
farm and sampling cluster as random effects (My outcome is positive or negative
at the level of the farm). I am usHi can anyone please tell me if it is possible to use
a variable to pass a file name to scan()?
I am trying to write a program that loops through a
series of text files. I use list.files() to cr
Hi.
Say I have a function f with two inputs x and y
f <- function(x y) {something}
that I wish to evaluate with two input vectors of length N
X <- c(x1 x2 ... xN)
Fold in Mathematica (or reduce in Python) works as follows
Fold[f x {a b c}] f[f[f[x a] b] c]
That is f is a binary operator x is the initial value and the results
are cascaded alonHi All
I 'm very knew to R. I downloaded and am running it on my redhat so
that I can use the clim.pact package. Everything is downloaded and
installed correctly. When trying to read a netcdf Dear R-users
Is there any possibility to estimate a regression model with time varying
intercept and slope of the form
r(t) a(t) + b(t)*x(t) + eta(t)
a(t+1) a(t) + v(t)
b(t+1) b(t) On Sun Mar 27 2005 at 03 26 39AM +0200 Gorjanc Gregor wrote
> Hello!
>
> Has anyone successfully compiled F90 sources in R-package? I found the
> same question on r-devel list from 2002 and I
Hello dear all
I want to install the package "ordinal " but I don 't see the package listed under package sources.
I try to search it by "google " then I found this
http //euridice.tue.nl/from the code of predict for princomp it scale the new data using the object$center and pbject$scores i wander why?if the predict function desgined for validitation?but "analyzing multivariate data "(lDear R
Is there a way to apply row names as labels to a scatter plot matrix
I tried
pairs(dogs labels row.names)
Error in strwidth(labels "user ") cannot coerce type closure to character
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