[R] problem with quilt.plot

2012-07-04 Thread Tamara Hunjak
es not plot it and it does not give any error message. Therefor I don`t even know what could be wrong. Thanks for your help!!!   Tamara [[alternative HTML version deleted]] __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/li

Re: [R] sampling weights for multilevel models

2012-06-10 Thread Tamara
Thank you very much, Thomas! As I need to estimate the variance components, I will most probably have to switch from R to HLM or Mplus to apply different weights to different levels. Although I prefer R in general. -- View this message in context: http://r.789695.n4.nabble.com/sampling-weights-

Re: [R] sampling weights for multilevel models

2012-06-10 Thread Tamara
Thank you very much, Rui! But I am afraid that I won't be able to use this function for multilevel analysis, as unfortunately I don't see how exactly I will combine it with functions in the R packages for multilevel analysis . -- View this message in context: http://r.789695.n4.nabble.com/samplin

[R] sampling weights for multilevel models

2012-06-10 Thread Tamara
Dear all, I am struggling with a problem which I have been reading on the forums about and it did not seem to me that there is a precise answer to my question. However, I still hope there is one. I am working with http://timss.bc.edu/ PIRLS data and trying to conduct multilevel analysis. Ther

Re: [R] Performance of concatenating strings

2007-10-31 Thread Tamara Steijger
Hi, thanks for the fast answers. I'm sorry, if I was not clear enough in my question. The problem we are trying to solve is LetterDisplay. There is already a heuristic implemented in the multcompView package of Hans-Peter Piepho. We implemented an exact fixed parameter tractable implementat

[R] Performance of concatenating strings

2007-10-31 Thread Tamara Steijger
Hi, I would like to ask how the paste(S1, S2, sep="") function internally works. Are the two stings copied to a new String? I have a program where successively strings are build up. First the program calls an external function and depending on the result it builds up strings to visualize th