Hi Birgit - looks like you have a few issues here. Birgit Lemcke <birgit.lemcke <at> systbot.uzh.ch> writes:
> > Hello you all! > > I am a completely new user of R and I have a problem to solve. > I am using Mac OS X on a PowerBook. > > I have a table that looks like this: > > species X1 X2 X3 X4 X5 X6 X7 X8 X9 X10 X11 X12 X13 X14 > X15 X16 X17 X18 X19 X20 X21 > 1 Anth_cap1 1 0 0 1 0 1 0 0 1 0 0 0 0 0 > 0 0 1 0 0 0 1 > 2 Anth_crin1 1 0 0 1 0 1 0 0 1 0 1 0 0 0 > 0 0 0 1 0 0 1 > 3 Anth_eck1 1 0 0 1 0 1 0 0 1 0 0 0 0 0 > 0 0 0 1 0 0 1 > 4 Anth_gram1 1 0 0 1 0 1 0 0 1 NA NA NA NA 0 > 0 0 0 1 0 0 0 > 5 Anth_insi1 1 0 0 1 0 1 0 0 1 0 0 0 1 0 > 0 0 0 1 0 0 1 > > All columns are binary coded characters. > The Import was done by this > > Test<-read.table("TestRFemMalBivariat1.csv",header = TRUE, sep = ";") First - you need to transpose the matrix to have species as columns. You can do this with: d2 = data.frame(t(Test[,-1])) colnames(d2) = Test[,1] #now use d2 > Now I try to perform a similarity analysis with the dsvdis function > of the labdsv package with the sorensen-Index. > > My first question is if all zeros in my table are seen as missing > values and if it islike that how can I change without turning zero > into other numbers? no - the zeros are valid observations. the na's are missing data. > DisTest<-dsvdis(Test, index = "sorensen") > > But I always get back this error message: > > Warnung in symbol.For("dsvdis") :'symbol.For' is not needed: please > remove it > Fehler in dsvdis(Test, index = "sorensen") : > NA/NaN/Inf in externem Funktionsaufruf (arg 1) > Zusätzlich: Warning message: > NAs durch Umwandlung erzeugt Second - you have an issue with missing data. It looks like dsvdis does not like the NA's - so you must make a decision about what to do. Delete that species, delete that site, or whatever... Finally - the warning over symbol.For is an issue with the labdsv library itself - nothing you are doing wrong. The results will still be valid - but the use of symbol.For is something that will eventually need to be changed in the labdsv library. hth, stephen ______________________________________________ R-help@stat.math.ethz.ch 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.