read.table 和 read.csv 跳过第一列？

Question

I have a file likes below:

> pageid,revid,user_rating
> 
> 1073624,16845228,Start

...

and I use:

data = read.csv (file_name)

then:

str(data)

then I have:

$ pageid                      : int  16845228
...

The pageid should start with '1073624', not '16845228'.

Also, I have the same file content, just instead of ',' is 'tab' character.

> pageid    revid   user_rating
> 
> 1073624   16845228    Start

and I use:

data = read.table (file_name, header = TRUE, sep = '\t')

And when I showed data, I have the same problem.

What did I do wrong?

Answer 1

Thank you very much for your answers. However I found the problem: there is a ',' redundant in the end of each line, so R misunderstood the data. Remove this character and everything is okay.