search for: rnews_2005

...perform parallel computing using R with Condor (hopefully using foreach or other recommended solutions, if available) for some "Embarrassingly parallel" problem. I will start by listing what I found so far, and then go on asking for help. So far I found the a manual by Xianhong Xie from Rnews_2005-2 (see page 13) Talking about R and condor: http://cran.r-project.org/doc/Rnews/Rnews_2005-2.pdf I also found several references for R and condor in the task views of High Performance Computing<http://cran.r-project.org/web/views/HighPerformanceComputing.html> : http://cran.r-project.org/web...

...hat R can be run as a Condor job in the "standard" (not "vanilla") universe. The advantage of this would be that due to checkpointing, jobs can be suspended and transferred to another node. There is a good overview by Xianhong Xie here: http://cran.r-project.org/doc/Rnews/Rnews_2005-2.pdf Unfortunately, the article points out that some restrictions of Condor preclude us from running R in the standard universe. Does anyone know if this can be overcome? Thanks David -- David Reitter - ICCS/HCRC, Informatics, University of Edinburgh

RNews_2005-1.pdf has been uploaded to CRAN. It should be on the main CRAN site Saturday and on the mirrors by Sunday or Monday. This issue is being distributed as PDF only. Please email rnews-editors at r-project.org if not having a gzipped PostScript version will be a problem for you. My thanks to all th...

RNews_2005-1.pdf has been uploaded to CRAN. It should be on the main CRAN site Saturday and on the mirrors by Sunday or Monday. This issue is being distributed as PDF only. Please email rnews-editors at r-project.org if not having a gzipped PostScript version will be a problem for you. My thanks to all th...

Hello, Does somebody could help me in the computation(formulation) of a hierarchical ANOVA using linear model in R? I'm working in a population biology study of an endangered species. My aim is to see if I have effects of "Density of individuals/m2" on several measured plants fitness traits. As independent variables I have: Humidity (continuous) Nutritive substance (continuous)

Hello all, Recently I started playing with running R scripts on the Condor system in my institute. (For more on this, have a look at: Running Long R Jobs with Condor DAG by Xianhong Xie link: http://cran.r-project.org/doc/Rnews/Rnews_2005-2.pdf ) Might someone advice me about the following question: How should I handle the RNG (random number generation) in the running of parallel instances of R on different machines. For example, Let's say I wish to run 10 times a script that generates 100 normal variables and return their mea...

Group, I am new to R. In my work as a program evaluator, I am regularly asked to estimate effect sizes of prevention/intervention and educational programs on various student outcomes (e.g. academic achievement). In many cases, I have access to data over three or more time periods (e.g. growth in proficiency test scores). I usually have multiple independent and dependent variables in each

Dear all, During my pre-R era I tried (yes, tried) to understand mixed models by working through the 'rat example' in Sokal and Rohlfs Biometry (2000) 3ed p 288-292. The same example was later used by Crawley (2002) in his Statistical Computing p 363-373 and I have seen the same data being used elsewhere in the litterature. Because this example is so thoroughly described, I thought

hello R help I am trying to analyze a data set that has been collected from a hierarchical sampling design. The model should be a mixed model nested ANOVA. The purpose of my study is to analyze the variability at each spatial scale in my design (random factors, variance components), and say something about the variability between regions (fixed factor, contrast of means). The data is as

Hi helpeRs, I've been working through some examples in Pinhiero & Bates( 2000) trying to understand how to translate to the new Lme4 syntax but without much luck. Below is what I think I should do, but either the answers don't come out the same or I get errors. In the Oxide problems I'm particularly interested in obtaining the levels coeficients but this options no longer seems

I have a problem moving from multistratum aov analysis to lmer. My dataset has observations of ampl at 4 levels of gapf and 2 levels of bl on 6 subjects levels VP, with 2 replicates wg each, and is balanced. Here is the summary of this set with aov: >> summary(aov(ampl~gapf*bl+Error(VP/(bl*gapf)),hframe2)) > >Error: VP > Df Sum Sq Mean Sq F value Pr(>F) >Residuals

...perform parallel computing using R with Condor (hopefully using foreach or other recommended solutions, if available) for some "Embarrassingly parallel" problem. I will start by listing what I found so far, and then go on asking for help.. So far I found the a manual by Xianhong Xie from Rnews_2005-2 (see page 13) Talking about R and condor: http://cran.r-project.org/doc/Rnews/Rnews_2005-2.pdf I also found several references for R and condor in the task views of High Performance Computing<http://cran.r-project.org/web/views/HighPerformanceComputing.html> : http://cran.r-project.org/web...