R help - May 2008 - Seeking help with trellis: log scales on xyplot

Good afternoon.

The basic plot function can automatically generate log scales as follows:

     plot(calcium ~ soil_ph, log="y")

Here is my basic model in xyplot...

     xyplot(calcium+magnesium ~ soil_ph|depth*region)

I would like the calcium and magnesium values to be reported on a log scale.
I have tried manipulating "scales" and "yscale.components"
to no effect.

Many thanks for your kind assistance,
Hobie Perry
US Forest Service
St. Paul, MN
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On 5/23/08, hobie perry <hobie_perry at yahoo.com>
wrote:
>
>  Good afternoon.
>
>  The basic plot function can automatically generate log scales as follows:
>
>      plot(calcium ~ soil_ph, log="y")
>
>  Here is my basic model in xyplot...
>
>      xyplot(calcium+magnesium ~ soil_ph|depth*region)
>
>  I would like the calcium and magnesium values to be reported on a log
scale.
>  I have tried manipulating "scales" and
"yscale.components" to no effect.
Try something like

xyplot(calcium+magnesium ~ soil_ph|depth*region,
       scales = list(y = list(log = 2)))

-Deepayan