[R] check variables: a Q from a beginner

Emmanuel Paradis paradis at isem.univ-montp2.fr
Thu Jan 16 09:56:02 CET 2003

A 20:24 15/01/2003 -0800, Roger Peng a écrit:
>You may want to just try summary(varname) or more likely you want

Or even better: ls.str(), which does str() on all objects listed by ls().

>UCLA Department of Statistics
>rpeng at stat.ucla.edu
>On Wed, 15 Jan 2003, Yan Yu wrote:
> > HI, all,
> > How can i check the variables that is currently being loaded..
> > ls() only list the variable name, but not the summary of the variable,
> > like the dimension of the variable etc.. Is there a command in R, which
> > is equivalent to "whos" in matlab, which let me check the variables
> > currently loaded in Matlab..

If you have highly structured objects, try this: ls.str(max.level = -1).

> > also, Does anyone have recommendation on ~a good reference to R..
> > I could not find the answer to my Q in the documentation included with R
> > package..
> >

You may have a look at my tutorial "R for beginners" though it is far from 
a reference doc it mentions ls.str() among the few things to know before 
starting. You can find it in the contributed docs section on CRAN.

Hope this helps.

Emmanuel Paradis

> > thanks,
> > yan
> >
> > ______________________________________________
> > R-help at stat.math.ethz.ch mailing list
> > http://www.stat.math.ethz.ch/mailman/listinfo/r-help
> >
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