Hi Petr, Thanks again for trying again with these data, I really appreciate it.
Your script works perfectly, but the problem I'm having is how to store the model results so after your script I would do: m1.R<-glm(cbind(res$BEH_T, res$BEH_F) ~ res$SITE + res$YEAR + res$PRECIP_MM_DAY + res$PUP_AGE_EST + res$MO_AIR_TEMP, family="binomial") mod<-dredge(m1.R) where mod is a list not a vector. So your example has 10 iterations of the loop so there should therefore be 10 different mod[1,] that I want to store and that is what I can't work out how to do, for example I can do this: if (i>=1) print (mod[1,]) else print ("NO")} And I will get a print of each of the 10 model outputs that I want, but I want to store these somewhere. I did try to adjust your value <- matrix section of the script but had no luck. I hope this is a little clearer? Thank you again for your help, I really appreciate it! Ross -- View this message in context: http://n4.nabble.com/Loop-overwrite-and-data-output-problems-tp1570593p1573703.html Sent from the R help mailing list archive at Nabble.com. ______________________________________________ R-help@r-project.org mailing list 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.