adding to lists together using cbind - r

Question

This program works because I made the varibles inisde lapply global by using the <<- operator. However, it does not work with the real files in the real program. These are .tsv files whith named columns. The answer I get when I run the real program is: Error: (converted from warning) Error in : (converted from warning) Error in : arguments imply differing number of rows: 3455, 4319. What might be causing this?
lc <- list("test.txt", "test.txt", "test.txt", "test.txt")
lc1 <- list("test.txt", "test.txt", "test.txt")
lc2 <- list("test.txt", "test.txt")
#list of lists. The lists contain file names
lc <- list(lc, lc1, lc2)
#new names for the three lists in the list of lists
new_dataFns <- list("name1", "name2", "name3")
file_paths <- NULL
new_path <- NULL
#add the file names to the path and read and merge the contents of each list in the list of lists
lapply(
lc,
function(lc) {
filenames <- file.path(getwd(), lc)
dataList <<- lapply(filenames, function (lc) read.table(file=lc, header=TRUE))
dataList <<- lapply(dataList, function(dataList) {merge(as.data.frame(dataList),as.data.frame(dataList))})
}
)
#add the new name of the file to the path total will be 3 paths/fille_newname.tsv.
lapply(new_dataFns, function(new_dataFns) {new_path <<- file.path(getwd(), new_dataFns)})
print(new_path)
print(dataList)
finalFiles <- merge(as.data.frame(dataList), as.data.frame(new_path))
print(finalFiles)

Answer 1

I found a solution to the problem by writing a different type of code. Please see below. The input to the function is provided by the app input widgets
glyCount1 <- function(answer = NULL, fileChoice = NULL, combination = NULL, enteredValue = NULL, nameList) {
lc = nameList
new_dataFns <- gsub(" ", "", nameList)
first_path <- NULL
new_path <- NULL
old_path <- NULL
file_content <- NULL
for(i in 1:length(lc)){
for(j in 1:length(lc[[i]])){
if(!is.null(lc[[i]])){
first_path[[j]]<- paste(getwd(), "/", lc[[i]][j], sep = "")
tryCatch(file_content[[j]] <- read.csv(file = first_path[[i]], header = TRUE, sep = ","), error = function(e) NULL)
old_path[[j]] <- paste(getwd(), "/", i, ".csv", sep = "")
write.table(file_content[[j]], file = old_path[[j]], append = TRUE, col.names = FALSE)
}
}
}
}