Displaying 20 results from an estimated 6000 matches similar to: "a nice tool"
2004 Apr 16
1
install.packages
install.packages works for Linux because the directory structure is not
version dependent, as it is for the Windows download. That should be
fixed as soon as my sys admin consents to install R 1.9.0 so we
can do the cross compile.
Of course, you are right, Martin and Peter, that Zelig should be on CRAN
proper. We just need to write a few .Rd files to be compliant with R
check, and change our
2004 Mar 23
0
New R package
Zelig: Everyone's Statistical Software
Kosuke Imai, Gary King and Olivia Lau
Version 1.0
(Available at http://gking.harvard.edu/zelig)
A growing proportion of statisticians and methodologists from many
disciplines are converging on R, a powerful statistics package and
programming language. As an open source project, R is freely
2004 Jun 25
2
R 1.9.1 package installation problems
Hello,
I am writing as an administrator, not as an R user, so forgive me if I
am not completely knowledgeable about R.
I have a user who is creating an R package for windows from a Linux
environment using the crossbuild environment by Jun Yan and A.J.
Rossini. The packages she generated worked fine until she tried to
install in R 1.9.1 for Windows. Now when she installs with
2010 Apr 11
1
Matrix is not symmetric under lme4
Dear all,
My code is presented as the following.
library(MASS)
library(rmutil)
library(repeated)
library(lme4)
library(arm)
#install.packages("Zelig", repos = "http://gking.harvard.edu")
library(Zelig)
rm(list = ls())
beta0<-2.5
beta1<--0.3
sigs2<-0.5
I<-4
#numberpatients<-c(40,100,160,200,400,600)
numberpatients<-c(1000)
#numberpatients<-3
times<-1
2005 Jan 11
0
New package: MatchIt
We would like to announce the release of our software MatchIt, now
available on CRAN. MatchIt implements a variety of matching methods for
causal inference.
Abstract:
MatchIt implements the suggestions of Ho, Imai, King, and Stuart (2004)
for improving parametric statistical models by preprocessing data with
nonparametric matching methods. MatchIt implements a wide range of
sophisticated
2005 Jan 11
0
New package: MatchIt
We would like to announce the release of our software MatchIt, now
available on CRAN. MatchIt implements a variety of matching methods for
causal inference.
Abstract:
MatchIt implements the suggestions of Ho, Imai, King, and Stuart (2004)
for improving parametric statistical models by preprocessing data with
nonparametric matching methods. MatchIt implements a wide range of
sophisticated
2007 May 26
1
How to get the "Naive SE" of coefficients from the zelig output
Dear R-user:
After the fitting the Tobit model using zelig, if I use the following command then I can get the regression coefficents:
beta=coefficients(il6.out)
> beta
(Intercept) apache
4.7826 0.9655
How may I extract the "Naive SE" from the following output please?
> summary(il6w.out)
Call:
zelig(formula = il6.data$il6 ~ il6.data$apache, model =
2009 Mar 16
0
[OT] Debian now has a new section 'gnu-r'
Joerg Jaspert, one of the ftpmasters / archive maintainers within Debian,
today posted a new list of 'Sections' to debian-devel-announce (see eg here
http://www.nabble.com/forum/ViewPost.jtp?post=22524830&framed=y )
This now includes a new Section:
gnu-r Everything about GNU R, a statistical computation and
graphics system
which
2009 May 09
1
(no subject)
Could you help me with a problem? I should put non-linear variables into
zelig-model, how can that be done? I'm dealing with air pollution data,
trying to find out daily associations between mortality and air pollutants.
Weather variables used as confounders are in some cases non-linear. Since
smoothing is not an option I don't know how to proceed.
Thanks, Jaana
2005 Jan 06
0
package Zelig problem with setx
Hi!
Does somebody out there has experience with the Zelig package from Harvard uni?
I have a problem when trying to set the explanatory variables with setx
Polytomous logistic regression:
>z.out <- zelig(OPARS ~ v1+v2+v3+...+vn, model = "mlogit", data=heb)
that's OK
>x.out<-set(z.out)
Error in seq.Date(along = object) : `from' must be specified
#??? I have no date
2010 Mar 10
1
trouble getting multinimial logit model to work properly
Greetings all,
please consider the following data:
#Build Data frame
Slope<-c(1.291370, 12.208500, 2.110930, 0.578990, 5.019520, 0.807444,
0.554079
, 1.257080, 0.241504 , 0.184337 , 0.383044 , 0.342021)
Exposure<-c(790.54, 1167.79 , 845.58 , 1082.47 , 1189.61 , 677.17 ,
2058.56 , 469.09
, 112.02 , 803.31 , 254.14 ,1336.16)
FwyDist<-c(11809.4222 ,10623.0458, 12279.6271,
2011 Jan 19
1
Installing package in windows 7
Hi all,
I was trying to install a package called ei from this
http://gking.harvard.edu/eiR link . With GCC, r-base-dev and some other R
package dependencies installed it works perfect in my Ubuntu Linux system.
Now I am trying to install the same in Windows 7 environment. So far my
setup is as follows,
1. R installed in home folder (c:\Users\username\R-2.12.1\R. It is set to
run as
2009 Jun 17
0
New book: Mathematical modeling using R
May I recommend my new book on mathematical modeling to you, which is
based on R as a main software tool:
Kai Velten: Mathematical Modeling and Simulation, Wiley-VCH, 2009,
ISBN 978-3527407583.
See also:
http://www.wiley.com/WileyCDA/WileyTitle/productCd-3527407588.html
http://books.google.com/books?id=Czp1N5UWpyEC
List of reviews below.
The book covers a broad range of mathematical models
2010 Dec 21
0
"variable lengths differ (found for '(weights)')" error in Zelig library
Dear R users,
I am trying to estimate to estimate the average treatmen effect on the
treated (ATT) using first the MatchIt software to weight the data set and,
after this, the Zelig software as shown in Ho et al. (2007). See here for an
explanation of how to apply this technique in R:
http://imai.princeton.edu/research/files/matchit.pdf
I encounter a slight problem when I apply the weights that
2009 Feb 19
0
Zelig method setx()
Hello,
I am attempting to "automate" a Bayesian normal linear regression
using Zelig. Basically, I have a list containing several zelig()
objects, each having a different formula, same data set, and same
model (normal.bayes).
My problem lies in the setx() method, where I am setting a numeric
parameter to a value other than the mean. This is straightforward if
I input the parameters
2011 Dec 16
0
Error constructing probabilities in Zelig
I've run an ordered logistic regression model in R with Zelig and am
looking to calculate predicted probabilities. Zelig has a series of simple
one line commands to generate the information I want on first differences
and so forth. Unfortunately, I keep getting an error when running the zelig
function and was wondering if there was a quick alternative for generating
predicted probabilities for
2013 Mar 05
2
Zelig package: Coxph model problems
Hi,
I'm having problems with the Zelig package - when using
the below R displays the follwing message (I'm running R
i386 2.15.3 for Windows and have updated all the Zelig
packages):
z.out<-zelig(Surv(psurv2, pcens2) ~ ren_sup3 + age,
data=data_urgent, model="coxph")
** The model "coxph" is not available with the currently
loaded packages,
** and is not an
2011 Jul 06
0
matching, treatment effect-ATT and Zelig package
Hi there,
I'm wondering what Zelig in the following situation (code below) actually does. Is this considered as a so called regression adjustment after the propensity score matching?
library(MatchIt)
library(Zelig)
data(lalonde)
re78 represents the outcome variable
1. With Zelig
m.out <- matchit(treat ~ age + educ + black + hispan + married + nodegree + re74 + re75, data = lalonde)
2010 Feb 15
1
argh .. if/else .. why?
Hello, would someone please help explain the following inconsistency
in the if/else statement to me?
The format of the if/else #3 below is ok, but if/else #1 is not? (I get
an "unexpected else" type error.) In order for it to work I have to use
if/else #2
Thanks .. maybe there is some reason for this, but this looks very
inconsistent to me.
R version 2.10.1 (2009-12-14)
Ubuntu 9.04
2013 May 20
1
help with 'cem' for r 2.14.2
Hello,
I am trying to use R for propensity score matching in SPSS.? I have version 21 of SPSS and I downloaded R 2.14.2 as directed as well as the R Essentials plug-in.? I have run a test for R and it appears to be running correctly.? I then downloaded psmatching3 and have tried to use the PS matching dialog in SPSS.? However, I continue to run into problems as SPSS reports that there is no