[R] plot xaxp issue

Elaine Kuo elaine.kuo.tw at gmail.com
Tue Jan 8 02:02:47 CET 2013


I figured out that the code should be

boyline<-lm(body_weight ~ body_length, data=subset (together,,sex=="boy"))

However, the "" could be omitted if the field name happened to be
numeric, such as 1, 2, or 3.
Please kindly explain why the "" could be omitted for numbers.
Thanks again.

On Tue, Jan 8, 2013 at 8:40 AM, Elaine Kuo <elaine.kuo.tw at gmail.com> wrote:
> boyline<-lm(body_weight ~ body_length, data=together, subset(together,sex=="boy"))

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