how to do the concentration-time profiles in R?

PLEASE do read the posting guide
 http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.


You need to supply us with some information about what you are doing and preferebly some code and data.  A handy way to provide data is with dput()  [see ?dput for more information]

John Kane
Kingston ON Canada

-----Original Message-----
From: xiaocong.zuo at gmail.com
Sent: Sun, 6 May 2012 16:44:10 +0800
To: r-help at r-project.org
Subject: [R] how to do the concentration-time profiles in R?

Hi, Dear all,

Could you please tell me how to select specified column in dataset and
how
to do
the concentration-time profiles in R?

Thank you!

xiaoc

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Hi, Dear all,

Could you please tell me how to select specified column in dataset and 

how

to do

my.data[, x]
my.data[, "aa"]
my.data$aa

the concentration-time profiles in R?

What is that?

Besides you could help youself a lot reading an intro to R which I believe 
is in doc directory of your R installation.

Regards
Petr

Thank you!

xiaoc

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PLEASE do read the posting guide 

http://www.R-project.org/posting-guide.html

and provide commented, minimal, self-contained, reproducible code.