I am very new to R and programming and thank you in advance for your patience and help with a complete novice!
I am working with a large multivariate data set that has 10 explanatory environmental variables (e.g. temp, depth) and over 60 response variables (each is a separate species). My data frame is set up like the simplified version below: JulianDay Temperature Salinity Depth Copepod Barnacle Gastropod Bivalve 222 12.1 33 0.3 500 756 0 178 222 12.3 33.2 1.1 145 111 0 0 223 11.1 33.1 7 752 234 12 0 Where JulianDay, Temperature, Salinity, Depth, Copepod, Barnacle, Gastropod, and Bivalve are the column headers. I am using the pairs function in R to explore my data. My data frame is named Sunset. Using this code: Z=cbind(Sunset$Copepod,Sunset[,c(1:10)]) #the first 10 columns of my data frame are explanatory variables such as temp Pairs.Copepod=pairs(Z,main="Copepods vs. explanatory variables", panel=panel.smooth) I get a great pair plot of Copepods vs. all of the 10 explanatory environmental variables. I would like to do this for each of my 60+ species. I can't just make one big pair plot of all of my explanatory variables vs. all of my species because I have too many. So instead I would like a separate pair plot for each species (each column of data after the first 10 columns of explanatory variables) I would like to be able to write a loop that creates all of these plots at once, but haven't been able to do so. Ideally, each pair plot would have the main title be the column header (e.g. Copepod) for that plot. I would love to include a way to save each pair plot as separate jpeg to a folder on my desktop with a file name that includes the species name (e.g. Copepod). Again, I am very new to R and to programing so I would GREATLY appreciate anyone patient and kind enough to respond with lots of detail so I can hopefully follow your answer and suggestions. I have searched but haven't been able to find a way to write a loop that uses each column of data, so I would love some help! Thank you! Marley -- View this message in context: http://r.789695.n4.nabble.com/apply-pairs-function-to-multiple-columns-in-a-data-frame-tp4377425p4377425.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.