search for: runforest

...when running predict() in the randomForest package. I asked for the data and code. The combination runs fine under WinXPPro, but does give segfault on one of our Linux boxes running R (1.7.0 through R-devel_2004-01-08) on Mandrake 9.0. The predict.randomForest() function calls a C function "runforest" via .C(..., DUP=FALSE, ...), which in turns calls a Fortran subroutine "testreebag" within a for loop. The segfault seems to occur right after finishing the runforest() function in C and returning to R. I inserted the line: Rprintf("Done!\n"); as the last line of the r...

Dear R-devel, A user reported a strange problem with predict.randomForest in the randomForest package yesterday, and I'm baffled by it. The code at the end of the message produces the error. The problem is that, in predict.randomForest, there's a .Fortran call to "runforest". One of the arguments passed in is "countts", which is a vector of doubles. The error occured because when the .Fortran call returned, that component of the output is mysteriously turned into numeric(0)! I checked that vector inside the Fortran code (dimensioned as a matrix), and...