 | | | rhelp | | Dear Friends
I 'm trying to learn to how to get Bootstrapped standard errors for estimated coefficients from a regression.
For instance suppose I have the following model
logitmodel <- glm (y~X1+XDear colleagues
I have an image which I can display in the greyscale using image. On this image for some pixels which I know I want to display their activity based on a third measure. One way to Hi
I have a vector contains values 1 2 3.
Can I call a function split to split it into 3 vectors with 1 corresponds
to value 1 which contain all the indexes for value 1.
2 corresponds to valueHi
I have a fresh install of R 2.5.0 I then installed the pls package.
When trying to load this package I get
> library(pls)
Attaching package 'pls '
The following object(s) are maskHi
I have two matrices A (axd) and B (bxd). I want to get another matrix C (axb)
such that C[i j] is the Euclidean distance between the ith row of A and jth
row of B. In general I can say that My sessioninfo is below and I have two questions about loading packages
in R
#See my response to your thread " controling the size of vectors in a
matrix ". Please do not create multiple threads on the same day asking
basically the same question especially if you cannot subst
Hello there.
When I try to start the jvm using .jinit() after loading library(rJava) I
don 't seem to be able to as I get the message
Error in .jinit() Cannot create Java Virtual Machine
What Hi this is simple
I 've generated a bivariate normal distribution with a known correlation.
I want to plot the density function with p(y x) on the vertical axis
and x and y on the horizontal axDear Group
I am working with a data frame containing 316 rows of individuals
with 79 variables. Each of these 79 variables have values that range
between -4 to +4 and I want to subset this data frSystem Fedora Core 5
R 2.2.1 and 2.4.1 complied from source
gcc 4.1.1
I 'm trying to pass a single precision array to some legacy code. I
ultimately got the code working by ignoring part of the Hi
i am trying to use "mix " package for unrestricted general location model
and multi-imputation on a dataset. While I am quite confident that data
are ready I receive errors on prelim.mix() step.
R version 2.5.0 under gentoo linux. This may be just my ignorance
about naming conventions inside loops and subsets but the following
appears like a bug to me.
y c( 1963 1963 1964 1964 1965
How does one go about doing a repeated measure regression? The
documentation I have on it (Lorch & Myers 1990) says to use linear /
(subj x linear) to get your F. However if I put subject into Try this
lm(Sepal.Length ~. iris[1 3])
# or
cn <- c( "Sepal.Length " "Sepal.Width " "Petal.Length ")
lm(Sepal.Length ~. iris[cn])
On 5/17/07 Chris Elsaesser <chris.elsaesser@(protected) > wroteI am running a very long loop and would like to save intermediate
results in case of a system or program crash. Here is the skeleton of
what my code would be
for (i in 1 zillion)
{
results[Karl Knoblick wrote
> Hallo!
>
> I have two groups (placebo/verum) every subject is measured at 5 times the first time t0 is the baseline measurement t1 to t4 are the measurements after applying Hallo!
I have two groups (placebo/verum) every subject is measured at 5 times the first time t0 is the baseline measurement t1 to t4 are the measurements after applying the medication (placebo or I have been having some difficulty instaling RWinEdt 1.7-5
I 've tried a couple methods including installing the package from a zip
file that I 've downloaded locally.
It installs fine but then I get
I am currently using S+ which is my company standard econometric package
but unfortunately in some areas R has a lot more to offer in nice
functions/libraries. Libraries I would like to use in S+. Hi everybody
3 questions about R-square
---------(1)----------- Does R2 always increase as variables are added?
---------(2)----------- Does R2 always greater than 1?
---------(3)----------- How i� "q�eȉ��(��� "��Z�Z�j�l��wh��ϙ�!�w�����Z��.qǞu�b�� "� (jȭj�^j� "��^�+-���ܩzX����tG��z�!zx�ʗ���گ*�j��Z��뢷bjZ n�lk(��8b��i� '�* '�� j)^v� ���m��ǣ�ge����_���E觲֥�)����bq�b�y������hie R users
l have the following matrix
n 20
m <-matrix(nrow n ncol 4)
colnames(m) c( "treatmentgrp " "strata " "survivalTime ")
for(i in 1 n) m[i ] <-c(sHi
I can use runif to generate 1 dimensional random variables
assume the dimesion of the random variable is 2 X(x1 x2) how do I
generate the 2 dimensional random variable with normal distributIs there any way to set options during the evaluation of a particular
expression with them automatically reset when control leaves that
expression however that happens? Kind of like "let " on a "spe
R-helpers
I have a dataset that has 168 subjects and 12 variables. Some of the
variables have missing data and I want to use the multiple imputation
capabilities of the "mice " package to address t
Hi useRs
Perhaps I am having a senior moment?
I have a nested variable situation to model
toy example
> df <- data.frame(A factor(c( "a " "a " "x " "x ") levels c( "x " "a "))
+ I uploaded a new version of the lars package to CRAN
which incorporates some nontrivial changes.
1) lars now has normalize and intercept options both defaulted to TRUE
which means the variables arI am working on an open source program to be used for
model selection and evalution. I would like to
utilize the graphical capabilities of R to generate
plots that I would then display in my softwareOn Wed 2007-05-16 at 16 34 -0400 Thomas Adams wrote
> I am generating a single graphic containing about 31 Boxplots the issue
> I am having is that not all the labels (3 characters each) are show |
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