Le vendredi 25 novembre 2011 à 00:02 -0800, Dhaynes a écrit : > Hello, > > I am new to R. > I have multidimensional array (379,2,3) and I need to create a series of > linear regressions (379 to be exact) > I have the array stored properly I believe, but I can not use the > lm(myarray[1,1,1:3]~myarray[1,2,1:3]) > I have checked to make sure they are exactly the same length. > I have also tried endlessly to convert the subset of the array back into a > vector. > > any help would be appreciated. The 'formula' argument of lm doesn't take actual values, but variable names. So you need to create vectors containing your data, or pass a data frame with these vectors are columns. So, going the latter way : df <- data.frame(a=myarray[1,1,1:3], b=myarray[1,2,1:3]) lm(a ~ b, data=df)
or in one step lm(a ~ b, data=data.frame(a=myarray[1,1,1:3], b=myarray[1,2,1:3])) Regards ______________________________________________ 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.
