Dear all, The following causes me trouble:> a <- data.frame(2:5,3:6,4:7) > str(a)`data.frame': 4 obs. of 3 variables: $ X2.5: int 2 3 4 5 $ X3.6: int 3 4 5 6 $ X4.7: int 4 5 6 7> str(data.matrix(a))int [1:4, 1:3] 2 3 4 5 3 4 5 6 4 5 ... - attr(*, "dimnames")=List of 2 ..$ : chr [1:4] "1" "2" "3" "4" ..$ : chr [1:3] "X2.5" "X3.6" "X4.7" Reading the man page for 'data.matrix' trends to indicate it generates a numerical matrix from a data.frame. ... or am I wrong ? (I could almost swear it was working before... but like always the question turns to be 'before what ?' =) ). Any hint would be greatly appreciated ...Oups, I almost forget: I use R-1.3.1 compiled on a linux box with Suse 7.1 Laurent -- Laurent Gautier CBS, Building 208, DTU PhD. Student D-2800 Lyngby,Denmark tel: +45 45 25 24 85 http://www.cbs.dtu.dk/laurent -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info", "help", or "[un]subscribe" (in the "body", not the subject !) To: r-help-request at stat.math.ethz.ch _._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._
>>>>> "Laurent" == Laurent Gautier <laurent at cbs.dtu.dk> writes:Laurent> Dear all, The following causes me trouble: > a <- data.frame(2:5,3:6,4:7) > str(a) `data.frame': 4 obs. of 3 variables: $ X2.5: int 2 3 4 5 $ X3.6: int 3 4 5 6 $ X4.7: int 4 5 6 7 > str(data.matrix(a)) int [1:4, 1:3] 2 3 4 5 3 4 5 6 4 5 ... - attr(*, "dimnames")=List of 2 ..$ : chr [1:4] "1" "2" "3" "4" ..$ : chr [1:3] "X2.5" "X3.6" "X4.7" Laurent> Reading the man page for 'data.matrix' trends to indicate it Laurent> generates a numerical matrix from a data.frame. exactly --- and what is the trouble ? You *did* get a numerical matrix {integers are numeric} Laurent> ... or am I wrong ? (I could almost swear it was working Laurent> before... (still is) Martin Maechler <maechler at stat.math.ethz.ch> http://stat.ethz.ch/~maechler/ Seminar fuer Statistik, ETH-Zentrum LEO D10 Leonhardstr. 27 ETH (Federal Inst. Technology) 8092 Zurich SWITZERLAND phone: x-41-1-632-3408 fax: ...-1228 <>< -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info", "help", or "[un]subscribe" (in the "body", not the subject !) To: r-help-request at stat.math.ethz.ch _._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._