[R] how to do the concentration-time profiles in R?

[Petr PIKAL]

> 
> 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
> 
>    [[alternative HTML version deleted]]
> 
> ______________________________________________
> R-help at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide 
http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.