Hi !
You need to assign the output of read.table() into an object; this is
how R works:
mydata <- read.table ("mydata1.csv", sep=",", header=T)
mymean <- mean(mydata$var)
You should read some introductory material.
I found this useful:
http://www.burns-stat.com/pages/Tutor/hints_R_begin.html
And then, there are tons of good books and documentation (go check the
CRAN as well)
HTH,
Ivan
PS: post in plain text
--
Ivan CALANDRA
Université de Bourgogne
UMR CNRS/uB 6282 Biogéosciences
6 Boulevard Gabriel
21000 Dijon, FRANCE
+33(0)3.80.39.63.06
ivan.calan...@u-bourgogne.fr
http://biogeosciences.u-bourgogne.fr/calandra
Le 15/05/12 14:57, jacaranda tree a écrit :
Hi I am really new using R, so this is really a beginner stuff! I
created a very small data set on excel and then converted it to .csv
file. I am able to open the data on R using the command "read.table
("mydata1.csv", sep=",", header=T)" and it just works fine. But when I
want to work on the data (e.g. calculate the mean of variable "X") R
says "object not found". I tried the "attach" command or "mean
("mydata1.csv"&X)" but still I get the same error message. I don't
understand why R is having difficulty finding a variable. I believe I am doing
something wrong. I will really appreciate if you could help me
with this.
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