Hello fellow R sufferers, Is there a way to perform an appending operation in place?
Currently, the way my pseudo-code goes is like this for (i in 1:1000) { if (some condition) { newRow <- myFunction(myArguments) X <- rbind(X, newRow) # <- this is the bottleneck!! } } As you can see, it works but as the matrix X gets the size of a few million rows, the code runs very slow. I am looking for something like the natively "in place" appending python function called "append()" or the perl function "push". "In-place" operations would allow me to do (in pseudocode) for (i in 1:1000) { if (some condition) { newRow <- myFunction(myArguments) append(X, newRow) } } You see? I do not have to call and re-assign the giant X matrix every loop cycle. Any help? Thank you, Your culpritNr1 -- View this message in context: http://www.nabble.com/R%3A-%22in-place%22-appending-to-a-matrix.-tp20001258p20001258.html Sent from the R help mailing list archive at Nabble.com. ______________________________________________ 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.