Displaying 20 results from an estimated 120 matches similar to: "(no subject)"
2012 Feb 13
1
Retrieve by Id from an R list
Hi everyone,
I'm using the poLCA module for some analysis work.
Basically, Im using the command >poLCA(f, data=response,nclass=2)
This returns a poLCA object (a list)
>From this data, I need to retrieve certain indexes, such as[[5]] as seen
below.
[[5]]
Pr(1) Pr(2) Pr(3)
class 1: 0 1.0 0.0
class 2: 0 0.5
2012 Feb 09
1
poLCA and conditional dependence
Dear all,
I'm an Sri Lankan undergraduate student. I'm also a total newbie to R.
My aim is to use the poLCA package to do a latent class analysis.
I found the documentation very helpful, but need to make a small
clarification that has stumped me awhile.
In my work, I need to make provision for conditional dependence. I'm told
that poLCA lets you do that. Unfortunately, I
2009 Feb 25
2
run latent class analysis with R
What's the best approach to running latent class analysis with R? I've downloaded both randomLCA and poLCA packages, but I am interesting in running a standard LCA with individual records (not frequency table) as input data.
Wen Gu
John Jay College of Criminal Justice445 West 59 StreetNew York, NY 10029
wgu@gc.cuny.edu
_________________________________________________________________
2002 Apr 18
2
Changing tick mark labels
Hello,
Can anyone help me out with this problem?
After performing logistic regressions and testing the significance with
likelihood ratios, I have plotted the results using "termplot". I am
wondering, how to get the names of my variables to appear on the x-axis
rather than ascending numbers?
I have used:
termplot(fm, se=T, axes=FALSE, col.se="black")
axis(1, 1:4,
2011 Dec 23
2
Latent class multinomial (or conditional) logit using R?
Hi everyone?
Does anybody know how can I estimate a
Latent class multinomial (or conditional) logit using R?
I have tried flexmix, poLCA, and
they do not seem to support this model.
thanks in advance
adan
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Sent from the R help mailing list archive at
2011 Jan 31
2
Latent Class Logit Models in discrete choice experiments
Dear R users,
I would like to perform Latent Class Logit Models for the analysis of choice experiments in environmental valuation.
This kind of analysis is usually performed with NLogit Software (http://www.limdep.com).
I attach the results I usually obtain using NLogit and NLogit model specifications.
For Random parameter models and Logit Models I usually perform my analysis with the package
2009 Jul 02
1
Windows zip-files (binaries) for older version of scatterplot3d
Hi,
I am working with -poLCA- which uses the package -scatterplot3d- in
order to work. However, I work on a restricted server that is not
online. The R-version installed there is 2.6. However, running
library(poLCA) after installing the most recent -scatterplot3d- on the
server leaves me with R telling me that scatterplot3d needs R-version
2.7 or a more recent versions. Since I cannot install the
2009 Sep 08
1
cbind formula definition
Hi there,
I have the following problem:
I have a package called "polLCA" which has the following syntax:
poLCA(formula, data)
and needs the following formula definition:
formula <- cbind(V1,V2,V3,...)
So far so good.
What I tried now was the following:
#Get "data" with the "read.table" fuction
data <- read.table("d:/ .....)
#Select cols to use in the
2009 Nov 21
3
"subset" or "condition" as argument to a function
Dear Rxperts!
I was wondering if it is possible to write a function which can take in
argument of a subset or condition.. Of course, I am aware of the alternate
methods like coplot, par.plot, xyplot etc... I am specifically interested in
using conditions/subsets with "plot"..
A simple fragmented example is shown here..
pltit <- function(y,x,dat,dat1,dat2,sbst) {
plot(y~x, data=dat,
2012 Jul 04
1
How do you impute missing data using Latent Class Model (poLCA package)
My problem is I have data with both categorial and numerical data,
currently only the categorical number contains missing data, was wondering
do I make a new dataframe containing only the categorical columns?
How would you use Latent Class Model specifically poLCA to impute the
missing data?
http://www.sscnet.ucla.edu/polisci/faculty/lewis/pdf/poLCA-JSS-final.pdf
The reason why I chose not to
2012 Mar 08
1
poLCA
Hi,
I am running some latent class models with civariates using poLCA in R, and
have a question the meaning of some error messages.
My model has 8 y-variables (dichotomous) and 2 x-variables (also dichotomous),
and I am trialling different numbers of classes.
When I run a 2-class model, the model runs fine without any error messages. I
used the nrep = 10 option to avoid local maxima. Class %
2006 Jul 13
1
TR: Latent Class Analysis
_____
De : Pousset [mailto:maud.pousset@noos.fr]
Envoyé : mardi 4 juillet 2006 18:38
À : 'r-help@stat.math.ethz.ch'
Objet : Latent Class Analysis
Hello everybody,
I am working on latent class analysis and have already used the ‘R’ function
« lca » (in the e1071 package). I ‘ve got interesting results but I can’t
simply find out the methodology used by this routine :
1) What
2013 Oct 25
2
R CMD check problem with R 3.0.2
Using SUSE Linux, Windows 32 bit and Windows 64 bit R 3.0.2 , I am unable
to use R CMD check successfully. Here is the Windows 64 bit report:
Z:\R\source\effects>R CMD check pkg
* using log directory 'Z:/R/source/effects/pkg.Rcheck'
* using R version 3.0.2 (2013-09-25)
* using platform: x86_64-w64-mingw32 (64-bit)
* using session charset: ISO8859-1
* checking for file
2012 Feb 12
3
Writing output into a file
Hi everyone,
I'm an R newbie working with the poLCA module. I achieved my target without
having to bother anyone, but It seems that I've got stuck at the last
minute.
My problem is simple. I need to write my results into a file.
My results are in the shape of a list (unbalanced columns)
I've considered several methods (sink(), write.file) etc. etc.
Unfortunately, I'm not the best
2011 Aug 05
2
[?]apply functions or for loop
Hello,
First time posting to this mail list.
I'd like to use R in the most efficient way. I'm accomplishing what I want,
but feel there is a more R'ish way to do it. Just learning R.
*My goal: get ranks of value across rows with row names and column names
intact.*
I'm guessing one of the [?]apply functions will do what I need, but I
couldn't sort out which one (after a lot
2012 Aug 27
2
randomLCA
Can anybody, please, explain me how many parameter are estimated using
randomLCA?
For examples, model "dentistry.lca2random" estimate 1 scale (or
variance, b_j) parameter and 2 position parameters (a_cj)? Doesn't
it?
Do I need at least 4 diagnostic tests for such a model?
What happens if I specify options blocksize and byclass? How many
diagnostic tests (or rater) I need?
2020 Jun 26
2
R 4.0.0 rebuild status
On Friday, 26 June 2020 10.47.13 WEST I?aki Ucar wrote:
> I used bcond locally and wrongly assumed that fedpkg build would
> support --with BCOND and --without BCOND. Instead, the way to activate
> it is to change to "%bcond_with check" and then revert to
> "%bcond_without check". The only difference with bootstrap is that
> "bootstrap" is recognized
2012 May 29
1
model frame and formula mismatch with latent class analysis poLCA
Dear R-users,
I keep getting an ERROR saying " Error in model.matrix.default(formula,
mframe) : model frame and formula mismatch in model.matrix() " when i fit
poLCA with more than 63 variables. Below are the details.
I am trying to do a Latent Class Analysis using poLCA. My data set contains
binary scores of, for instance, 200 students on 100 items. These numbers
could even be more
2010 Mar 05
0
Still on poLCA
Dear all,
I have just sent a message asking about poLCA but I thought of another question I wanted to ask. I get the G^2 statistic in my output and want to test for its significance. I get that the degrees of freedom for the test are (S-1-p) where S is the number of different patterns observed and p is the number of estimated parameters. Are these the "residual degrees of freedom" that
2011 Aug 05
0
Latent Class with covariates
Dear all
Last week, I posted a question and some of you spent their valuable time to respond. Thank you (once again). This time, after doing a lot of homework, I return with a second question on the issue.
I was advised to use poLCA for a Latent Class Analysis with covariates. The software works well, although I feel a bit uncomfortable with the fact that you need to run many times the