[R] Check for date variable in a arbitrary dataset

Gabor Grothendieck ggrothendieck at gmail.com
Mon Nov 24 14:36:20 CET 2008

The classes of the columns are:

sapply(DF, class)

On Mon, Nov 24, 2008 at 3:39 AM, Harsh <singhalblr at gmail.com> wrote:
> Hello,
> This is my first time posting to the R-help list and I apologize for
> the apparent triviality of my query.
> I am creating an R script to create Univariate Exploratory Analysis of
> a input dataset (No meta-data to provide extra information about each
> column)
> .
> Providing summary statistics is possible in case of numeric data and
> using all.is.numeric() from the Hmisc package allows me to filter out
> those columns with alpha-numeric content.
> I have tried to check if a column is a date field or not, but have not
> been able to do so. Are Regular Expressions the only answer? I've also
> looked for CRAN packages but haven't found any.
> Bering a newbie user of R, I do not possess the requisite knowledge to
> write my own function for the above objective.
> Thank you for your time
> Harsh
> Decisions Systems Group
> Mu Sigma Inc.
> Chicago, IL
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