[R] How to override ordering of panels in xyplot()

[Michael Kubovy]

On Mar 3, 2007, at 3:19 PM, Deepayan Sarkar wrote:

> On 3/3/07, Michael Kubovy <kubovy at virginia.edu> wrote:
>> Dear r-helpers,
>>
>> I'm conditioning an xyplot on a variable whose levels are'low',  
>> 'med', 'high'. How do I override the alphabetical ordering for the  
>> panels of the plot?
>
> This has less to do with xyplot and more to do with the default of  
> the 'levels' argument in the factor() function. Just make sure the  
> levels are in the right order in your data when xyplot is called.

Unless one makes the factor ordered, reordering the levels of a  
factor does not seem to be a trivial matter. The only R function I've  
found that makes it easy is reorder_factor() (package:reshape). Or am  
I missing something?
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