How to add random numbers to an existing data frame for Validation

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How to add random numbers to an existing data frame for Validation

Susanne Osterkamp
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Hello everybody,

I would like to validate my data for working with CART
I need to now how to randomize eithter the ID column in my already existing data frame or how to create a randomized column of some 6800 intgers to fit it to my data frame. I did not understand the manual concerning the possibilities to random data, sorry.
Thanks a lot for your help!

Susanne Osterkamp
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How to add random numbers to an existing data frame for Validation

Tim Keitt
Try ?sample at the command prompt. (Note the "replace" option.)

THK

On Thu, 2004-08-19 at 01:12, Susanne Osterkamp wrote:

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> X-Virus-Scanned: by amavisd-new at stat.math.ethz.ch
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> X-Spam-Level: **
> X-Spam-Status: No, hits=2.5 required=5.0 tests=AWL,BAYES_50 autolearn=no version=2.63
>
> Hello everybody,
>
> I would like to validate my data for working with CART
> I need to now how to randomize eithter the ID column in my already existing data frame or how to create a randomized column of some 6800 intgers to fit it to my data frame. I did not understand the manual concerning the possibilities to random data, sorry.
> Thanks a lot for your help!
>
> Susanne Osterkamp
> _______________________________________________________
> WEB.DE Video-Mail - Sagen Sie mehr mit bewegten Bildern
>
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--
Timothy H. Keitt
Section of Integrative Biology
University of Texas at Austin
http://www.keittlab.org/