[R] lattice yscale.components: use multiple convenience functions

[David Winsemius]

On Aug 6, 2013, at 9:09 AM, Taylor, Sean D wrote:

> Good morning,
> 
> I really enjoy some of the recent convenience functions in lattice_0.20-15 and latticeExtra_0.6-24. I am wondering if there is a way to use multiple functions in the same call? Specifically, I would like to be able to use yscale.components.log10ticks (to get the major tick marks at powers of 10 and minor tick marks in between) and also label the major tick marks smartly using superscripts for the power. Something along the lines of this:

See the code supporting figures 8.4 and 8.5 in Sarkar's Lattice book.

-- 
David.
> 
> ##Pseudocode, does not work
> xyplot((1:200)/20 ~ (1:200)/20, type = c("p", "g"),
>       scales = list(x = list(log = 2), y = list(log = 10)),
>       xscale.components = xscale.components.fractions,
>       yscale.components = list(yscale.components.log10ticks,
>                                yscale.components.logpower))
> 
> or this:
> ##Does not work
> xyplot((1:200)/20 ~ (1:200)/20, type = c("p", "g"),
>       scales = list(x = list(log = 2), y = list(log = 10)),
>       xscale.components = xscale.components.fractions,
>       yscale.components = function(...){
>         yscale.components.log10ticks
>         yscale.components.logpower}
>       )
> 
> Thanks!
> Sean
> 
> Sean Taylor
> Post-doctoral Fellow
> Fred Hutchinson Cancer Research Center
> 206-667-5544
> 
> 
> 	[[alternative HTML version deleted]]
> 
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David Winsemius
Alameda, CA, USA