specify a character vector for row.names in write.table () r

Question

Given the write.table line below:

write.table(results,file = "mydata.csv",row.names = TRUE,col.names = TRUE,sep = ",", append = TRUE)   

I have the below result: enter image description here

However I would like to have row.names set up for a specific character vector (called "text" in my algorithm) to have the below result for a 400 rows (Note: Again, every row is already known. My concern is how to specify it so that my output file (mydata.csv) capture it. Please see below for desired outcome: enter image description here Please let me know if I have not been clear , and I will provide more details. Thanks a lot for your help

Answer 1

From the row.names argument of help(write.table) :

either a logical value indicating whether the row names of x are to be written along with x , or a character vector of row names to be written .

So you could add your row names vector text in the row.names argument.

write.table(results, row.names = text, ...)

Also note that row.names = TRUE and col.names = TRUE are the default values in write.table() , so you do not need to include them. I'm also not sure why you're using append = TRUE . Taking those out, your call would then be

write.table(results, row.names = text, file = "mydata.csv", sep = ",")