In addition to which:
what does
str(E)
show?
The file is small, so what do you get when you simply time
E
at the R prompt?
header is TRUE by default in read.csv(), so it was unnecessary to supply
header=T
read.csv2() has header=TRUE and sep=";" by default, so simply
read.csv2('auto.csv')
should be sufficient if Tim's suggestion is the explanation.
read.csv() and friends are solid, reliable, and extremely well tested
functions. If they don't succeed, you can assume that your data is different
than expected. So inspect your data file to try and see what that might be.
Mac and Windows have different end-of-line conventions, but as far as I know
read.csv and friends are smart enough to handle that.
Your locale setting might be relevant, but that's pretty much outside my
experience.
--
Don MacQueen
Lawrence Livermore National Laboratory
7000 East Ave., L-627
Livermore, CA 94550
925-423-1062
Lab cell 925-724-7509
On 11/13/17, 7:29 AM, "R-SIG-Mac on behalf of BATES Timothy"
<r-sig-mac-boun...@r-project.org on behalf of tim.ba...@ed.ac.uk> wrote:
likely the separator character is not the default "," that csv expects.
look in the csv file and see what the separator character is: perhaps it is
a ";"
try:
df <- read.csv("example.csv", header=TRUE, sep=";"); names(df)
> On 13 Nov 2017, at 1:07 pm, 王宙翔 <wzx0...@icloud.com> wrote:
>
> Hi，Friends：
> When I want to read datas from csv , I have the following problem.
> For example:
> auto.csv ：
> <PastedGraphic-1.png>
>
> E <- read.csv("auto.csv", header=T)
> But E$age is NULL
> （on windows, E$age is not NULL）.
> Thank you ,everyone. I hope get this helps
> Wang
> _______________________________________________
> R-SIG-Mac mailing list
> R-SIG-Mac@r-project.org
> https://stat.ethz.ch/mailman/listinfo/r-sig-mac
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Scotland, with registration number SC005336.
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