[R] Superscripts in strip labels of lattice plot

[Peter Ehlers]

On 2011-06-03 15:10, David Winsemius wrote:
>
> On Jun 3, 2011, at 5:38 PM, Judith Flores wrote:
>
>> Hello,
>>
>>    I need to add superscripts of the strip labels of a xyplot.
>>
>> For example:
>>
>>
>> xyplot(a~b|c)
>>
>>    Where c has 3 factor levels: A^2, A^3 and A^4. How can I introduce
>> expressions in the strip labels?

David has given you the answer. I'll just add that you might
want to widen the strips a bit if you use superscripted factor levels:

   xyplot(Sepal.Length ~ Sepal.Width | Species, data = iris,
       strip = strip.custom(factor.levels = expression(
           'A'^2,'A'^3,'A'^4)),
       par.settings = list(layout.heights = list(strip = 1.5)))

Peter Ehlers

>
> Here is an example that comes up on a search with terms expression&
> strip.default (which I thought was the correct argument to the strip
> parameter but turns out I was not remembering my documentation
> correctly:
>
> http://finzi.psych.upenn.edu/R/Rhelp02/archive/57933.html
>
> --
>
> David Winsemius, MD
> West Hartford, CT
>
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