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R helpers, I am working with the R program performing multivariate regression trees (MRT). I have a matrix with species and environmental variables saved as a CSV file (sprot_matrix.csv), I have 42 species and 8 environmental variables (SECCHI+PH+TA+PTOT+NTOT+CHLA+AREA+ MEANDEP) for 104 samples Title SpA SpB SpC SpD Varible1 Variable2 Variable3 Sample1 Sample 2 Sample 3 Sample 4 Sample 5...

Dear R users, I try to use xyplot() to display two different response variables from the same dataframe per panel, but don't succeed: xyplot(ptot.seaslog ~ vmcwit | seas, data=reeks, as.table=TRUE, panel = function(x,y){ panel.xyplot(x, y, ylim=c(0,1)) panel.superpose(x=reeks$vmcwit, y=reeks$ptotbin, panel.groups = "panel.xyplot", groups=reeks$seas, subscripts = TRUE, col="r...

...s ; "m" is my initial data frame, which has the variable "code" as row.names, and another variable "name" that I'd like to use as labels for the points. > attach(m) > t <- subset(m, comm == "59512", select=c(pvviol,pcamb,pvvoit,pvroul,pinc,pdeg,ptot,pvp,pmin)) > library(mva) > a <- princomp(na.omit(t),cor=TRUE) I have tried some complicated things like > biplot(a, cex=0.6, xlabs = subset(m, (comm == "59512") & !(is.na(pvviol)), select = name)) (because I have two points who have missing values), but it doesn't...

...uot;, "HgDis", "HgTot", "MgDis", "MgTot", "MnDis", "MnTot", "MoDis", "MoTot", "N", "NH4", "NaDis", "NaTot", "NiDis", "NiTot", "PDis", "PTot", "PbDis", "PbTot", "SC", "SO4", "SbDis", "SbTot", "SeDis", "SeTot", "SrDis", "SrTot", "TDS", "TSS", "TlDis", "TlTot", "Vdis", &q...

...uot;, "HgDis", "HgTot", "MgDis", "MgTot", "MnDis", "MnTot", "MoDis", "MoTot", "N", "NH4", "NaDis", "NaTot", "NiDis", "NiTot", "PDis", "PTot", "PbDis", "PbTot", "SC", "SO4", "SbDis", "SbTot", "SeDis", "SeTot", "SrDis", "SrTot", "TDS", "TSS", "TlDis", "TlTot", "Vdis", &q...