[R] how to force a table to be square?

[William Dunlap]

> -----Original Message-----
> From: r-help-bounces at r-project.org 
> [mailto:r-help-bounces at r-project.org] On Behalf Of Wu Gong
> Sent: Thursday, July 22, 2010 9:44 AM
> To: r-help at r-project.org
> Subject: Re: [R] how to force a table to be square?
> 
> 
> Hi William,
> 
> I'm curious about that you used d[] <- lapply(d, factor...
> Could you please tell me if there are any differences between 
> d[] and d?

lappy(dataFrame, ...) returns a "list", not a "data.frame"
so d<-lapply(d, factor) would result in d being a list.
d[]<-newValue pushes the new values into the existing structure
of d, generally leaving the attributes (e.g., class) alone.

Bill Dunlap
Spotfire, TIBCO Software
wdunlap tibco.com 

> Thank you.
> 
> -----
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