[R] a replace for subset

[James C. Whanger]

Would facet_wrap or facet_grid give you what you want?

On Sat, Apr 16, 2016 at 8:45 AM, ch.elahe via R-help <r-help at r-project.org>
wrote:

> Hi,
> I have a data set (mydata), which a part of this is like the following:
>
>
> 'data.frame':   36190 obs. of 16 variables:
> $ RE                    : int  38 41 11 67 30 18 38 41 41 30 ...
> $ LU                     : int  4200 3330 530 4500 3000 1790 4700 3400
> 3640 4000 ...
> $ COUNTRY        : Factor w/ 4 levels "DE","FR","JP", "FR"…
> $Light                  : Factor w/2 levels   "ON","OFF","ON", ….
> $OR                     : Factor w/2 levels   "S","T","S",….
> $PAT                  : Factor w/3 levels   "low", "high", "middle",….
>
>
> Now I want to plot RE vs LU with ggplot2 for all the possible cases, I
> know how to do subsetting for the data but I want to know is there any
> shorter way to do that? For example I want to have a plot for RE vs LU for
> (COUNTRY= FR, Light=off, OR=S, PAT=low) and one for (COUNTRY= FR, Light=on,
> OR=S, PAT=high) and …., as you see doing subset is time consuming, is there
> any other way?
> Thank you for any help.
> Elahe
>
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-- 
*James C. Whanger*

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