[R] Filling dataframe incorrectly in for loop

Hi everyone, I am writing a simple script to read in a data file, search through the data file for an exact character match for a microRNA name, subset those rows, and aggregrate a dataframe with those subselections all in a for loop. This is what I have so far: #READ IN DATA file1 = "C:/Desktop/

Re: [R] Filling dataframe incorrectly in for loop

Nevermind, I knew it was a simple fix, just needed to take a break from R: for(i in 1:length(mirs)) { holder = subset(data, data$mir==mirs[i]) table = rbind(table, holder) } -- View this message in context: http://r.789695.n4.nabble.com/Filling-dataframe-incorrectly-in-for-loop-tp4648545p4648

[R] Writing a Permutation Function

Hi everyone, I am somewhat new to R and I am trying to write a permutation function such that it inputs a character vector and from an arbitrary length "n" which is the length of the combinations for the character vector. I know there are R packages for permutation but this is for an assignment.

Re: [R] Writing a Permutation Function

Thanks for the input everyone! So far this is the updated code that I have: alphabet = c("a","b","c","d") holder = c() permute = function(alphabet,n){ for (i in 1:1000){ perm = sample(alphabet, replace=F, size=n) holder = rbind(holder, perm, deparse.level=0) } data2 = unique(holder) data3

Re: [R] Writing a Permutation Function

Thanks for all the suggestions. This is my final code that seems to be working: alphabet = c("a","b","c","d") holder = c() permute = function(alphabet,n){ while((length(unique(holder))/n)<(length(alphabet)^n)){ perm = sample(alphabet, replace=T, size=n) holder = rbind(holder, perm, deparse