[R] How to get a degree sign into a lattice factor level?

[Deepayan Sarkar]

On Monday 11 November 2002 07:04 pm, Sonam Lodro wrote:

> I notice that expressions can be used in legends, but as far as I can
> tell, cannot be used as levels for factors.  I'd like to be able to do
> something like that so that the levels printed in a lattice plot show
> the degree character.

Try something like

xyplot(rnorm(100) ~ rnorm(100) | gl(2, 50),
       strip = function(factor.levels, ...) {
           strip.default(factor.levels = expression(1 * degree, 2 * degree),
                         ...)
       })

Deepayan

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