[R] [R-pkgs] OpenMX structural equation software

John Fox Senator William McMaster Professor of Social Statistics Department of Sociology McMaster University Hamilton, Ontario, Canada web: socserv.mcmaster.ca/jfox ___ R-packages mailing list r-packa...@r-project.org https://stat.ethz.ch/mailman

Re: [R] 140 packages in R Commander!!

on my not-all-that-fast Internet connection and occupies about 250 MB (considerably less than 10 US cents at today's hard-disk prices), which doesn't seem terrible to me. Best, John John Fox Senator William McMaster Professor of Social Statistics Department

Re: [R] structural equation modeling in sem, error, The model has negative degrees of freedom = -3, and The model is almost surely misspecified...

variables in the model, since you specified that dec is correlated with the structural disturbances for density and ALL-Jack1. Regards, John John Fox Senator William McMaster Professor of Social Statistics Department of Sociology McMaster University Hamilton

Re: [R] 140 packages in R Commander!!

John Fox Senator William McMaster Professor of Social Statistics Department of Sociology McMaster University Hamilton, Ontario, Canada web: socserv.mcmaster.ca/jfox -Original Message- From: Ajay Ohri [mailto:ohri2...@gmail.com] Sent: October-25-10 11:17 AM To: John Fox Cc

Re: [R] draw path diagram using dot

, John John Fox Senator William McMaster Professor of Social Statistics Department of Sociology McMaster University Hamilton, Ontario, Canada web: socserv.mcmaster.ca/jfox -Original Message- From: r-help-boun...@r-project.org [mailto:r-help-boun...@r

Re: [R] Repeated Measures MANOVA

Dear Chris, See the examples in ?Anova in the car package (but it works with a model fit by lm). I hope this helps, John John Fox Senator William McMaster Professor of Social Statistics Department of Sociology McMaster University Hamilton, Ontario, Canada

Re: [R] How is MissInfo calculated? (mitools)

at how the results for the completed data sets in rt.imp differ (e.g., the coefficients of u must differ a lot), and if that doesn't reveal the problem, at the completed data sets themselves. I hope this helps, John John Fox Senator William McMaster Professor

Re: [R] sem: variance explained

presumably includes estimated error variances for the endogenous variables in the model. Subtract these from the variances to get variance explained. I hope this helps, John John Fox Senator William McMaster Professor of Social Statistics Department of Sociology

Re: [R] Question about the effects package

scale). As is also documented, setting rescale.axis=FALSE will plot on the scale of the response. I hope this helps, John John Fox Senator William McMaster Professor of Social Statistics Department of Sociology McMaster University Hamilton, Ontario, Canada web

Re: [R] R article in forbes

Dear David and Bogasso, The image is from http://socserv.mcmaster.ca/jfox/Courses/R-course/index.html, as you'd see by clicking on the graph in the Forbes article, and it was indeed produced with scatter3d() in the car package. Best, John John Fox Senator

Re: [R] levene.test

} Regards, John John Fox Senator William McMaster Professor of Social Statistics Department of Sociology McMaster University Hamilton, Ontario, Canada web: socserv.mcmaster.ca/jfox -Original Message- From: r-help-boun...@r-project.org [mailto:r-help

Re: [R] levene.test

Dear Marta, -Original Message- From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] On Behalf Of martanair Sent: July-14-10 10:21 AM To: r-help@r-project.org Subject: Re: [R] levene.test how do I calculate the differences from the mean?

[R] [R-pkgs] version 2.0-0 of the car package

(). For the time-being, old function names, such as av.plots(), are available as deprecated aliases. A few functions from the alr3 package have also been rewritten, renamed, and are now part of car. The alr3 package will be updated later in the year. Regards, John John

Re: [R] sem psych

code. I didn't follow what you're trying to do with mapply(), since there appears to be only one data argument (myRes). Regards, John John Fox Senator William McMaster Professor of Social Statistics Department of Sociology McMaster University Hamilton, Ontario

Re: [R] Deviance Residuals

of the IWLS procedure used to fit the model; useful, for example, for detecting nonlinearity. What is the working option and how is this different? See above. I hope this helps, John John Fox Senator William McMaster Professor of Social Statistics Department

Re: [R] extracting p-values from Anova objects (from the car library)

the print method, which is simpler) to see how the p-values that you want are computed and write a small function to return them. I hope this helps, John John Fox Senator William McMaster Professor of Social Statistics Department of Sociology McMaster University

Re: [R] extracting p-values from Anova objects (from the car library)

object through (as I explained in a previous response). Best, John John Fox Senator William McMaster Professor of Social Statistics Department of Sociology McMaster University Hamilton, Ontario, Canada web: socserv.mcmaster.ca/jfox -Original Message

Re: [R] SEM : Warning : Could not compute QR decomposition of Hessian

? It would in particular be helpful to have a diagram of the structural part of the model. Regards, John John Fox Senator William McMaster Professor of Social Statistics Department of Sociology McMaster University Hamilton, Ontario, Canada web

Re: [R] SEM : Warning : Could not compute QR decomposition of Hessian

Dear Anne, -Original Message- From: Anne Mimet [mailto:ami...@mnhn.fr] Sent: August-26-10 7:45 AM To: John Fox Cc: r-help@r-project.org Subject: RE: [R] SEM : Warning : Could not compute QR decomposition of Hessian Dear John, Thank a lot for your answer. Indeed, i

Re: [R] calculate the elasticities by linear.hypothesi commander

/0.42-1=0 will work, however, because division isn't allowed; you would have to rephrase as 2.38*eq1_dlnPfresh - 1. The deltaMethod function, also in the car package, is more flexible. I hope this helps, John John Fox Senator William McMaster Professor of Social

Re: [R] Possible Bug in Effects Package

without a constant (which will violate marginality). Thanks for bringing the problem to my attention. I'm afraid that I've been so busy this fall that I've been unable to monitor the r-help list. John John Fox Senator William McMaster Professor of Social

Re: [R] Robust ANOVA with variance heterogeneity

Dear Maike, You could use the Anova() function in the car package with a heteroscedasticity-consistent coefficient covariance matrix (via the argument white.adjust=TRUE). Regards, John -Original Message- From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] On

Re: [R] QQ plot

Dear Madan, Please see the qq.plot() function in the car package. I hope this helps, John -Original Message- From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] On Behalf Of Madan Sigdel Sent: October-09-09 8:54 AM To: r-help@r-project.org Subject: [R] QQ

Re: [R] Why H1=1? (H's the hat matrix)

Dear Peng, This seems a curious question to pose on r-help: The vector 1 is the first column of X, and hence lies in the subspace spanned by the columns of X. H projects any vector orthogonally onto the subspace spanned by X. Thus, if a vector, such as 1, lies in this subspace, it's projected

Re: [R] Why H1=1? (H's the hat matrix)

Dear Simon, -Original Message- From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] On Behalf Of Simon Bonner Sent: October-11-09 2:33 PM To: Peng Yu Cc: r-h...@stat.math.ethz.ch Subject: Re: [R] Why H1=1? (H's the hat matrix) Another, less geometric, way to

Re: [R] Need help with reduced row echelon form

Dear KS, Some time ago, I posted a solution to this problem (minus the ERO matrices) to the r-help list. You'll find the relevant functions at http://socserv.socsci.mcmaster.ca/jfox/Courses/R-programming/matrixDemos.R . Regards, John -Original Message- From:

Re: [R] how to print the full name of the factors in summary?

are aliased, so there must be redundancies among the factors. If you want contr.treatment, treating Mon as the baseline level, then simply omit ordered=T from the call to factor(), but this won't make the collinearities disappear. I hope this helps, John -- John Fox

Re: [R] qqplot

Carol, You could run a line through the pairs of first and third quartiles of the two distributions, i.e., c(quantile(x, .25), quantile(y, .25)) and c(quantile(x, .75), quantile(y, .75)). (Of course, you'd want the line to extend across the whole graph.) I hope this helps, John -Original

Re: [R] qqplot

Dear Peter, I assumed that Carol wanted to compare the shapes of the distributions and to adjust for differences in centre and spread. To put a line through the quartiles or to base a line on the medians and IQRs is more robust than using the means and sds. Best, John -Original

Re: [R] qqplot

Dear Carol, -Original Message- From: carol white [mailto:wht_...@yahoo.com] Sent: November-02-09 4:04 PM To: 'Peter Flom'; John Fox Cc: r-h...@stat.math.ethz.ch; 'Yihui Xie' Subject: RE: [R] qqplot Thanks for all your replies. I just wanted to compare the distributions of two

Re: [R] reference on contr.helmert and typo on its help page.

John Fox Senator William McMaster Professor of Social Statistics Department of Sociology McMaster University Hamilton, Ontario, Canada web: socserv.mcmaster.ca/jfox -Original Message- From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org

Re: [R] reference on contr.helmert and typo on its help page.

, and is essentially what Peter D. told you. In R, contr.treatment and contr.SAS provide dummy-variable (0/1) coding of regressors, differing only in the selection of the reference level. John Regards, Peng On Sun, Nov 8, 2009 at 6:17 PM, John Fox j...@mcmaster.ca wrote: Dear Peng Yu, Perhaps you're

Re: [R] Getting Sphericity Tests for Within Subject Repeated Measure Anova (using car package) (Adjusted Dataset)

and repeated-measure ANOVA, including sphericity test, etc., as summary(Anova(mod, idata=idata, idesign=~Sessn)). I hope this helps, John John Fox Senator William McMaster Professor of Social Statistics Department of Sociology McMaster University Hamilton

Re: [R] Getting Sphericity Tests for Within Subject Repeated Measure Anova (using car package)

Dear Sergios, Why don't you try what I suggested originally? Adapted to this data set, mod - lm(cbind(day1, day2, day3) ~ Treatment, data=Dataset) idata - data.frame(Day=factor(1:3)) summary(Anova(mod, idata=idata, idesign=~Day)) Peter Dalgaard also pointed toward an article that describes how

Re: [R] Problem with recode -Error in parse(text = range[[1]][1]) : unexpected end of input in c(0

to send a small reproducible example with a question like this. What if there were really a data-dependent bug in recode()? I hope this helps, John John Fox Senator William McMaster Professor of Social Statistics Department of Sociology McMaster University Hamilton

Re: [R] Problem with recode -Error in parse(text = range[[1]][1]) : unexpected end of input in c(0

Dear David, Thank you for addressing this question, but I answered Simon's question in an email I sent to the R help list a while ago: You can't mix : and c() in a recode specification; : isn't the sequence operator in a recode specification but rather represents a continuous range of values.

Re: [R] Import ASCII data using a .sas program

John Fox Senator William McMaster Professor of Social Statistics Department of Sociology McMaster University Hamilton, Ontario, Canada web: socserv.mcmaster.ca/jfox -Original Message- From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] On Behalf Of Donald Catanzaro

Re: [R] Multiple comparisons on Anova.mlm object

adjustment. Regards, John John Fox Senator William McMaster Professor of Social Statistics Department of Sociology McMaster University Hamilton, Ontario, Canada web: socserv.mcmaster.ca/jfox -Original Message- From: r-help-boun...@r-project.org

Re: [R] Type-I v/s Type-III Sum-Of-Squares in ANOVA

Dear Kevin and Daniel, This question comes up, in one form or another, with some frequency. Here's a closely related reply from last month: https://stat.ethz.ch/pipermail/r-help/2010-March/230280.html. Regards, John John Fox Senator William McMaster

Re: [R] categorical variable in scatterplot (car)

, Anthony, the usual advice about providing a reproducible example seems applicable here. Regards, John John Fox Senator William McMaster Professor of Social Statistics Department of Sociology McMaster University Hamilton, Ontario, Canada web: socserv.mcmaster.ca

Re: [R] categorical variable in scatterplot (car)

) in the development version of the car package on R-Forge, which will be released sometime this spring or summer. Thanks again, John -Original Message- From: Peter Ehlers [mailto:ehl...@ucalgary.ca] Sent: April-25-10 1:20 PM To: John Fox Cc: 'Anthony Lopez'; R-help@r-project.org Subject: Re

Re: [R] Path Analysis

these variables in the equation for reuse, their coefficients should be small. I hope this helps, John John Fox Senator William McMaster Professor of Social Statistics Department of Sociology McMaster University Hamilton, Ontario, Canada web: socserv.mcmaster.ca/jfox

Re: [R] Path Analysis

Dear Sam, -Original Message- From: R Help [mailto:rhelp.st...@gmail.com] Sent: May-24-10 1:04 PM To: John Fox Cc: r-help Subject: Re: [R] Path Analysis That's an interesting idea, I got the same impression from your SEM appendix to Companion to applied regression

Re: [R] How to make the assignment in a for-loop not affect variables outside the loop?

Try n=10 b=1 local( for(i in 1:n) { n=3 print(n) b - b*i } ) print(n) print(b) or n=10 b=1 local( for(i in 1:n) { n=3 print(n) assign(b, b*i, env=.GlobalEnv)

Re: [R] Repeated Measures Analysis - GLM

with the contrast coding for the between-subjects factors. I hope this helps, John John Fox Senator William McMaster Professor of Social Statistics Department of Sociology McMaster University Hamilton, Ontario, Canada web: socserv.mcmaster.ca/jfox -Original

Re: [R] Instrumental Variables Regression

Dear Jinsong, I assume from your question that X3 and X4 are also available as instruments. Then, if you use tsls() in the sem package, you could formulate the model as tsls(Y ~ X1 + X2 + X3 + X4, instruments = ~ A + B + X3 + X4, data=yourData). See ?tsls for a similar example. It is, by the

Re: [R] Structural Equation Models(SEM)

. The recommendations for non-normal distributions tend to be robust-ML, or robust weighted least squares. These are more computationally intensive, and I *think* that John Fox (author of sem) has written somewhere that it wouldn't be possible to implement them within R, without using a lower level

Re: [R] Anova in 'car': SSPE apparently deficient rank

() gets the univariate tests. What's unclear to me is whether the full data set really has just 5 subjects. Regards, John John Fox Senator William McMaster Professor of Social Statistics Department of Sociology McMaster University Hamilton, Ontario, Canada web

Re: [R] Questions regarding sem using hetcor() function from polycor and diagrams

the arrows. path.diagram() in the sem package will construct commands for dot to draw a path diagram. That might serve as a starting point. I'm afraid that I can't help with details. I hope this helps, John John Fox Senator William McMaster Professor of Social

Re: [R] Problem about Box-Cox transformation (topic in html form)

. But as Dieter also pointed out, the 0.95 power isn't going to change the distribution of the data much. As well, the problem here is that the distribution is more heavy-tailed than asymmetric, and a Box-Cox transformation isn't going to help. Regards, John John Fox Senator

Re: [R] How to get the definition of a function if it is masked by a variable?

, ...) UseMethod(mean) environment: namespace:base getAnywhere(mean)[3] function (x, ...) UseMethod(mean) environment: namespace:base I hope this helps, John John Fox Senator William McMaster Professor of Social Statistics Department of Sociology McMaster University

Re: [R] Nested ANOVA with covariate using Type III sums of squares

Dear Anita and Joris, Please see https://stat.ethz.ch/pipermail/r-help/2010-March/230280.html, posted to r-help in March. Regards, John John Fox Senator William McMaster Professor of Social Statistics Department of Sociology McMaster University Hamilton

Re: [R] sem R: singular and Could not compute QR decomposition of Hessian

, though all of them possible symptoms of underidentification. Regards, John John Fox Senator William McMaster Professor of Social Statistics Department of Sociology McMaster University Hamilton, Ontario, Canada web: socserv.mcmaster.ca/jfox -Original

Re: [R] help with R

hope this helps, John John Fox Senator William McMaster Professor of Social Statistics Department of Sociology McMaster University Hamilton, Ontario, Canada web: socserv.mcmaster.ca/jfox -Original Message- From: r-help-boun...@r-project.org [mailto:r

Re: [R] Problem with the recode function

, but both work for me. It occurred to me that you may have entered the recode command in the script window and executed it from there, but that works for me too. Best, John John Fox Senator William McMaster Professor of Social Statistics Department of Sociology

Re: [R] Problem with the recode function

John Fox Senator William McMaster Professor of Social Statistics Department of Sociology McMaster University Hamilton, Ontario, Canada web: socserv.mcmaster.ca/jfox -Original Message- From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] On Behalf

Re: [R] Problem with the recode function

Dear Alain, -Original Message- From: Alain Guillet [mailto:alain.guil...@uclouvain.be] Sent: June-15-10 12:25 PM To: John Fox Cc: r-help@r-project.org Subject: Re: [R] Problem with the recode function I found out what the problem is: when I start R Commander, some plug-ins

Re: [R] Problem with the recode function

Dear Alain, -Original Message- From: Alain Guillet [mailto:alain.guil...@uclouvain.be] Sent: June-16-10 8:30 AM To: John Fox Cc: r-help@r-project.org Subject: Re: [R] Problem with the recode function Dear John, Thanks a lot for the time you spent on my problem. I don't believe

Re: [R] Rcmdr installation under Unbuntu installatiion errors

of dependencies. An exception is the rgl package, which is needed for 3D scatterplots. I hope this helps, John John Fox Senator William McMaster Professor of Social Statistics Department of Sociology McMaster University Hamilton, Ontario, Canada web: socserv.mcmaster.ca

Re: [R] Rcmdr has stopped working

John Fox Senator William McMaster Professor of Social Statistics Department of Sociology McMaster University Hamilton, Ontario, Canada web: socserv.mcmaster.ca/jfox -Original Message- From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org

Re: [R] Rcmdr has stopped working

the information requested in the posting guide, at http://www.r-project.org/posting-guide.html. I hope this helps, John -Original Message- From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] On Behalf Of James Rome Sent: January-27-10 3:12 PM To: John Fox Cc: r-help@r

Re: [R] plotting additive ns components

Dear GlenB, The allEffects() function in the effects package can make these plots. I hope this helps, John -Original Message- From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] On Behalf Of GlenB Sent: January-27-10 9:09 PM To: r-help@r-project.org

Re: [R] SAS Type 1 / Type 3 Analysis Equivalent.

this helps, John John Fox Senator William McMaster Professor of Social Statistics Department of Sociology McMaster University Hamilton, Ontario, Canada web: socserv.mcmaster.ca/jfox -Original Message- From: r-help-boun...@r-project.org [mailto:r-help

Re: [R] Recoding Variables in R

that your problem was that you didn't distinguish correctly between factor levels and their numeric encoding; factor levels should be quoted in recode(). I hope this helps, John John Fox Senator William McMaster Professor of Social Statistics Department of Sociology

Re: [R] Update problem? Rcmdr disappears, won't re-open

Dear Brian, R for Windows FAQ item 2.8 http://cran.r-project.org/bin/windows/base/rw-FAQ.html#What_0027s-the-best- way-to-upgrade_003f describes how to upgrade R. What you did seems similar to one of the suggestions there, so I'm not sure why it didn't work. You might try uninstalling R 2.10.1,

Re: [R] interpreting error estimate in SEM

Dear Kathryn, I assume that MWDError is the error variance associated with MWD. If MWD is a standardized variable (i.e., with a variance of 1) then 59% of its variance is unaccounted for. I hope this helps, John John Fox Senator William McMaster Professor

Re: [R] Model matrix using dummy regressors or deviation regressors

of the Introduction to R manual that comes with R. I hope this helps, John John Fox Senator William McMaster Professor of Social Statistics Department of Sociology McMaster University Hamilton, Ontario, Canada web: socserv.mcmaster.ca/jfox -Original Message

Re: [R] Model matrix using dummy regressors or deviation regressors

John Fox Senator William McMaster Professor of Social Statistics Department of Sociology McMaster University Hamilton, Ontario, Canada web: socserv.mcmaster.ca/jfox -Original Message- From: pengyu...@gmail.com [mailto:pengyu...@gmail.com] On Behalf Of bluesky

Re: [R] scatterplot in Package CAR

Dear Ricardo, Yes, the least-squares line fit when reg.line=TRUE (the default) includes a constant. Regards, John John Fox Senator William McMaster Professor of Social Statistics Department of Sociology McMaster University Hamilton, Ontario, Canada web

Re: [R] SEM error

code. John Fox Sen. William McMaster Prof. of Social Statistics Department of Sociology McMaster University Hamilton, Ontario, Canada http://socserv.mcmaster.ca/jfox/ __ R-help@r-project.org mailing list

Re: [R] scatterplots in car package

-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code. John Fox Sen. William McMaster Prof. of Social Statistics Department of Sociology McMaster University Hamilton, Ontario, Canada http://socserv.mcmaster.ca/jfox

Re: [R] Intercept in lm and in library(car): Anova

Dear Stefan, -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Stefan Th. Gries Sent: Friday, September 14, 2007 2:09 PM To: [EMAIL PROTECTED] Subject: [R] Intercept in lm and in library(car): Anova Hi I have two questions regarding the meaning

Re: [R] Row-Echelon Form

Dear Peter, I don't have sufficient confidence in the numerical methods that I employed in these functions to contribute them to CRAN as a package. I'm glad that you found them useful, however. Regards, John John Fox, Professor Department of Sociology McMaster

Re: [R] SEM - singularity error

code. John Fox, Professor Department of Sociology McMaster University Hamilton, Ontario, Canada http://socserv.mcmaster.ca/jfox/ __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do

Re: [R] partial plots for logistic regression using glm

/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code. John Fox, Professor Department of Sociology McMaster University Hamilton, Ontario, Canada http

Re: [R] Post-hoc after Anova() car package using linear.hypothesis() in a Repeated Measure Analysis

John Fox, Professor Department of Sociology McMaster University Hamilton, Ontario Canada L8S 4M4 905-525-9140x23604 http://socserv.mcmaster.ca/jfox -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED

Re: [R] Question about aov

. I hope this helps, John John Fox, Professor Department of Sociology McMaster University Hamilton, Ontario Canada L8S 4M4 905-525-9140x23604 http://socserv.mcmaster.ca/jfox -Original Message- From: [EMAIL PROTECTED

Re: [R] Type III sum of squares and appropriate contrasts

with covariates you also have to attend to the centering of the covariates, for analogous reasons. I hope this helps, John John Fox, Professor Department of Sociology McMaster University Hamilton, Ontario Canada L8S 4M4 905-525-9140x23604 http://socserv.mcmaster.ca/jfox

Re: [R] library(car): Anova and repeated measures without between subjects factors

http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code. John Fox, Professor Department of Sociology McMaster University Hamilton, Ontario, Canada http://socserv.mcmaster.ca/jfox

Re: [R] library(car): Anova and repeated measures without between subjects factors

Dear Ralf, Thanks for the additional suggestions -- I'll take a look at them as well. John John Fox, Professor Department of Sociology McMaster University Hamilton, Ontario Canada L8S 4M4 905-525-9140x23604 http://socserv.mcmaster.ca/jfox

Re: [R] problem with anova() and syntax in lmer

and provide commented, minimal, self-contained, reproducible code. John Fox, Professor Department of Sociology McMaster University Hamilton, Ontario, Canada http://socserv.mcmaster.ca/jfox/ __ R-help@r-project.org mailing list

Re: [R] Question: Rcmdr and macbooks

John Fox, Professor Department of Sociology McMaster University Hamilton, Ontario Canada L8S 4M4 905-525-9140x23604 http://socserv.mcmaster.ca/jfox -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf

Re: [R] rcmdr and mailing lists

slower (in execution, anyway) than entering commands directly, since the Rcmdr just causes commands to be executed. I hope this helps, John John Fox, Professor Department of Sociology McMaster University Hamilton, Ontario Canada L8S 4M4 905-525-9140x23604 http

Re: [R] library(car): Anova and repeated measures without between subjects factors

Of Ralf Goertz Sent: Wednesday, October 17, 2007 6:00 AM To: John Fox Cc: r-help@r-project.org Subject: Re: [R]library(car): Anova and repeated measures without between subjects factors John Fox, Dienstag, 16. Oktober 2007: Dear Ralf, Unfortunately, Anova.mlm(), and indeed Anova() more

Re: [R] biserial correlation with pkg polycor

specification of which category is higher than the other. As for a reference, ?polyserial gives one. I hope this helps, John John Fox, Professor Department of Sociology McMaster University Hamilton, Ontario Canada L8S 4M4 905-525-9140x23604 http://socserv.mcmaster.ca/jfox

Re: [R] Strange results with anova.glm()

, self-contained, reproducible code. John Fox, Professor Department of Sociology McMaster University Hamilton, Ontario, Canada http://socserv.mcmaster.ca/jfox/ __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman

Re: [R] covariance matrix of the regression coefficients

https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code. John Fox, Professor Department of Sociology McMaster University Hamilton

Re: [R] Rcmdr Plugin and menus.txt

, probably later today. Thanks for bringing this bug to my attention. John John Fox, Professor Department of Sociology McMaster University Hamilton, Ontario Canada L8S 4M4 905-525-9140x23604 http://socserv.mcmaster.ca/jfox

Re: [R] Question in R

, minimal, self-contained, reproducible code. John Fox, Professor Department of Sociology McMaster University Hamilton, Ontario, Canada http://socserv.mcmaster.ca/jfox/ __ R-help@r-project.org mailing list https://stat.ethz.ch

Re: [R] R-Commander - pie charts menu blinded out

. (If I were really holier than the prophet I would have omitted pie charts entirely!) Regards, John John Fox, Professor Department of Sociology McMaster University Hamilton, Ontario, Canada L8S 4M4 905-525-9140x23604 http://socserv.mcmaster.ca/jfox -Original

Re: [R] box.Cox.powers() warning

of finding start values, optimize() apparently tried an unreasonable value. In this case, box.cox.powers(income, start=1) gives you the same result minus the warning. Regards, John John Fox, Professor Department of Sociology McMaster University Hamilton, Ontario

Re: [R] Which package should I use if I estimate a recursive model?

the sem() function in the sem package, but, aside from getting a test of over-identifying restrictions (assuming that the model is overidentified), there's not much reason to do so -- you'll get the same estimates. I hope this helps, John John Fox, Professor

Re: [R] Using R in a university course: dealing with proposal comments

Dear Arin, -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] project.org] On Behalf Of Arin Basu Sent: February-10-08 10:41 PM To: r-help@r-project.org Subject: [R] Using R in a university course: dealing with proposal comments Hi All, I am scheduled to

Re: [R] scatterplot in CAR

that? Moreover, as in any scatterplot, the variables Y and X will define the coordinates of the points -- there are not distinct X points and Y points. Regards, John John Fox, Professor Department of Sociology McMaster University Hamilton, Ontario, Canada L8S 4M4 905

Re: [R] History of R

, the r-help list (though naive users aren't always treated gently there), and the useR conferences. Regards, John John Fox, Professor Department of Sociology McMaster University Hamilton, Ontario, Canada L8S 4M4 905-525-9140x23604 http://socserv.mcmaster.ca/jfox

Re: [R] Weird SEs with effect()

Dear Gustaf, From ?effect, se: a vector of standard errors for the effect, on the scale of the linear predictor. Does that help? Regards, John John Fox, Professor Department of Sociology McMaster University Hamilton, Ontario, Canada L8S 4M4 905-525-9140x23604

Re: [R] Weird SEs with effect()

in the effects package do (as is documented in the help files for the package -- see the transformation argument under ?effect and the type argument under ?summary.eff). Regards, John John Fox, Professor Department of Sociology McMaster University Hamilton, Ontario, Canada

Re: [R] Rcmdr importing excel files

of files was contributed by Matthieu Lesnoff, to whom I'm copying this response. Maybe he'll have a more complete answer. Regards, John John Fox, Professor Department of Sociology McMaster University Hamilton, Ontario, Canada L8S 4M4 905-525-9140x23604 http

Re: [R] Imputation Packages

as well. Regards, John John Fox, Professor Department of Sociology McMaster University Hamilton, Ontario, Canada L8S 4M4 905-525-9140x23604 http://socserv.mcmaster.ca/jfox -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] project.org

Re: [R] Script to start Rcmdr

. I hope this helps, John John Fox, Professor Department of Sociology McMaster University Hamilton, Ontario, Canada L8S 4M4 905-525-9140x23604 http://socserv.mcmaster.ca/jfox -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED

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