Full_Name: bill langdon Version: 2.4.1 OS: ubuntu Submission from: (NULL) (155.245.58.159)
#WBL 22 Feb 2007 ubuntu R.version #platform i486-pc-linux-gnu #arch i486 #os linux-gnu #system i486, linux-gnu #status #major 2 #minor 4.1 #year 2006 #month 12 #day 18 #svn rev 40228 #language R #version.string R version 2.4.1 (2006-12-18) #if matrix "a" is created by array "vals" is created ok #if matrix "a" is created by read.table, #peak resource use (CPU, memory) by "array()" is excessive #a = array(0,dim=c(409600,1)); #ok #a = read.table("big.txt",header=FALSE); #all memory used #a = read.table("639x639.txt",header=FALSE); #all memory used #a = read.table("4096.txt",header=FALSE); #all memory used #a = read.table("4096nocomment.txt",header=FALSE); #all memory used #a = read.table("tiny.txt",header=FALSE); #ten lines ok #a = read.table("1000.txt",header=FALSE); #all memory used a = read.table("639.txt",header=FALSE); #uses 1.6047029GB dim(a) dd = 639; vals = array(a,dim=c(dd,dd)); ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel