Search Archives

Hallo, I'm using the R Version 2.3.0 (2006-04-24) on Suse Linux 10.1. With an older R and Linux version I could write a R-function into a file and execute it with the command...

Dear R Help-Team, If I start R and type in search() the result is: [1] ".GlobalEnv" "package:ctest" "Autoloads" "package:base" I often need an Add-on-package. I can load it with "> library(package)" or include a require...

Thanks! Sorry, I forgot to add the output of meta.summaries: Random-effects meta-analysis Call: meta.summaries(d = CoeffVector, se = StdErrorVector, method = "random", logscale = FALSE) Summary effect=NaN 95% CI (NaN, NaN) If anyone has further hints, what the...

Dear colleagues, I am currently struggling with dealing with standardized regression coefficients (as indicator of the relationship between two variables of interest) in my meta-analysis with Metafor. Due to literature research, standardized regression coefficients can be used for meta...

Hello, After looking through the archive and documentation for quite some time, I'd be very happy about some help with metaplot and meta.summaries. metaplot: --------- Can I change the label size? I've got 126 values and the intersection...

Hello I'm currently working on my master thesis and i'm using the lme4 package to do glmer models. To find the best model, i'm using the forward selection approach. After putting the former explanatory variables in, everything...

hello there, I'm an R beginner and got plunged into this. I guess my attempts are hopeless so far, so I won't even show them. I want to write a loop, which prints all erroneous values. My definition...

Hello everybody! We have a problem with a linux server that crashes when we try to read large datasets in R. The R code is as followed: komplett <- read.spss("komplett2003aar.sav", to.data.frame =TRUE, reencode ="Latin1") The information...

Dear List, How do I pick the p-value out of the urppTest result? For adfTest the p-value can be extracted by A2 at test$p.value following A2 <- adfTest(myData[,i], lags=2, type=c("c")) What do...

Dear Madams and Sirs, because the DOI foundation recommends a new, secure resolver [1], I wanted to suggest the attached patch. It a) updates a static DOI link in the docu, b) the code chunks that generate new ones, and...

Dear R community, I'm trying to analyze a model with an ordinal response variable. I wonder if clm()s (Cumulative Link Models) are appropriate in my case. The study compares parasite infestation of porpoises in 1995 and 2009. The...

Dear All, I'd like to perform the generalized Cochran-Mantel-Haenszel-Test (as described in Agresti (1990), Categorical Data Analysis) for my nominal data. My problem is that I have more than two groups. In fact I think I...

Dear all, a program that worked well for weeks today gave me consistently the error message no lines available in input referring to the lines for (i in (0:(timeintervals-1))) { j=subjectquantity+6+i*(subjectquantity+7) print (j) results...

> I think you have to get your hands dirty on this one, but it's not too > hard. Here's a function pie90() which is a tiny modification of pie(). > Does that do the trick? > Yes, it works perfectly fine...

Dear Wolfgang, Thank you very much for your response! Please let me summarize to check if I understood correctly. As I could also see from the correspondence with Rasheda, there are two possible ways for dealing with regression coefficients: 1...

Dear Wolfgang, Thank you very much for your immediate response! I'm not sure if I get the difference between the alternatives you mentioned. We expect a non-linear/quadratic association between two variables (effects of duration in early childcare...

Dear all, I have several questions on a zero-inflated MCMCglmm model. Data consist of 764 transects with porpoise counts ("sum_ppho"). On 304 transects zero porpoises were seen. Data come from several studies from the North Sea, they were...

Dear all, I'm struggling how to treat different indicators of the association that I want to examine in my meta-analysis, which are - correlations (this is clear to me) - partial correlations (I assume controlling for covariates can be considered...

Dear all, With the "escalc" function I calculated different effect sizes depending on the existing data (SMD, ZCOR, ZPCOR). For obtaining overall effects, can I treat the resulting yi in the same way? I mean, can I just integrate them...

Hi Jarrod, Thank you very much for your detailed help! I made some silly mistakes and had to think about some of your answers for a while. Unfortunately, these raise more questions. This is my most recent "working" r-code...