R help - Jul 2014 - Data visualization: overlay columns of train/test/validation datasets

Hello,

Given two different datasets (having the same number and type of columns,
but different observations, as commonly encountered in data-mining as
train/test/validation datasets), is it possible to overlay plots
(histograms) and compare the different attributes from the separate
datasets, in order to check how similar the different datasets are?

Is there a package available for such plotting together of similar columns
from different datasets?

Thanks,
SJ

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On Jul 1, 2014, at 3:46 PM, Supriya Jain wrote:
> Hello,
> 
> Given two different datasets (having the same number and type of columns,
> but different observations, as commonly encountered in data-mining as
> train/test/validation datasets), is it possible to overlay plots
> (histograms) and compare the different attributes from the separate
> datasets, in order to check how similar the different datasets are?
> 
> Is there a package available for such plotting together of similar columns
> from different datasets?
Possible. Assuming you just want frequency histograms (or ones using counts for
that matter) it can be done in any of the three major plotting paradigms
supported in R. No extra packages needed if using just base graphics.

> 
> Thanks,
> SJ
> 
> 	[[alternative HTML version deleted]]
Oh, you must have missed the parts of the Posign Guide where plain text was
requyested. See below.
> PLEASE do read the posting guide
http://www.R-project.org/posting-guide.html
And you missed that section, as well.
> and provide commented, minimal, self-contained, reproducible code.


-- 
David Winsemius
Alameda, CA, USA