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
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