[R] How to assign text string as object?

[Michal Kneifl]

One more question Jim.
What if the names of the columns are not a combination of a letter and an 
integer? Suppose they are just "names" of craniometric characteristics, like 
"nasal length", "orbital width" etc?
Thanks for you reply.

Michael

----- Original Message ----- 
From: "jim holtman" <jholtman at gmail.com>
To: "Ing. Michal Kneifl, Ph.D." <xkneifl at mendelu.cz>
Cc: <r-help at stat.math.ethz.ch>
Sent: Sunday, March 16, 2008 11:44 PM
Subject: Re: [R] How to assign text string as object?


> Take a look at 'matplot'.  If you want to loop, try
>
> for (i in 1:16) plot(df[[paste("V", i, sep="")]] ~ df$AGE)
>
> On 3/16/08, Ing. Michal Kneifl, Ph.D. <xkneifl at mendelu.cz> wrote:
>> I have a problem I cannot get over for a long time. Imagine I have a
>> data frame with 17 colums. 16 of them are craniometric variables of
>> Cervus elaphus and one contains age.
>> The data frame has 83 rows.
>> I want to write a loop which plots the values of each craniometric
>> variable against the age. The names of columns are V1, V2, V3, etc...
>> What I have done till now was writing this:
>>
>> layout(matrix(1:16,4,4))
>> plot(V1~AGE)
>> plot(V2~AGE)
>> .
>> .
>> .
>> .
>> etc.
>> How to assign a string in the loop so that the program understands it
>> is an object?
>> Thank for your help in advance.
>>
>> Michael
>>
>> ______________________________________________
>> 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.
>>
>
>
> -- 
> Jim Holtman
> Cincinnati, OH
> +1 513 646 9390
>
> What is the problem you are trying to solve?