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2001 Jun 06
1
The old Fortran underscore problem
...;R S Programming, R manuals and FAQ and still can't find the answer. In the Hmisc library I used the R scripts to build the package, which creates Hmisc.so. I have library.dynam('Hmisc', ...) in the .First.lib. When doing library(Hmisc) I get Error in dyn.load .... undefined symbol rank_ Note that I do not call dyn.load myself. The Hmisc library has a Fortran module named rcorr.f which issues CALL rank(....). rank is an entry point in a C source file ranksort.c, declared using "void rank(. .. .)". All source files seemed to compile fine. How do I call the C rank entry fr...
2009 Aug 04
1
Rank of matrix
Dear all, Rank of a matrix depends on which factors? Only on rows or coumns? or both ? If there is a collinearlity in the variables ( columns ) does it effects the rank? > X<-matrix((rnorm(10000)),50) > dim(X) [1] 50 200 > qr(X)$rank [1] 50 > X[,2]<-X[,30] > qr(X)$rank [1] 50 > X[10,]<-X[7,] > qr(X)$rank [1] 49 Thanks Alex [[alternative HTML
2010 Jul 14
5
Matrix Size
hi - i just started using R as i am trying to figure out how perform a linear regression on a huge matrix. i am sure this topic has passed through the email list before but could not find anything in the archives. i have a matrix that is 2,000,000 x 170,000 the values right now are arbitray. i try to allocate this on a x86_64 machine with 16G of ram and i get the following: > x <-