How RMeCab Handles Files Written in UTF-8

Judging from the text, you are using MeCab, R, and RMeCab in Windows.
Both should assume Shift-JIS by default.
Therefore, converting the target file itself to Shift-JIS is the easiest way to use it.

If you cannot change the character code of the file for some reason, you can read it as UTF-8 and convert it to Shift-JIS inside R. If so, please ask me again.

In your answer, I don't know when the characters got garbled, but if they are saved successfully as UTF-8, why don't you open them around TeraPad and change the character code and save them again?

Or

x<-readLines("utf-8.txt", encoding="UTF-8")
write(x, "shif.txt")

If you run , you should be able to change the character code.

Alternatively, use iconv in the middle of the operation as follows:

library(dplyr)
library(rvest)

usedCars<-read_html("http://www.goo-net.com/car_review/index.html")
comments<-html_nodes(usedCars, '.txt_review')%>%html_text()
comments<-iconv( comments, from = "UTF-8")

x<-tempfile()
write(x=gsub("[[:space:]]]", "", comments), file=x)

library (RMeCab)
frq<-RMeCabFreq(x)

head(frq)

unlink(x)

At the beginning, we are trying to extract elements from the site page, but if you have any questions related to these, we recommend that you ask them separately.