On 08/04/2010 02:11, Felix Andrews wrote:
> On 8 April 2010 03:34, Luigi Ponti <lpo...@inbox.com> wrote:
>
>
>> Thanks for the hint, Felix: the following code makes it but (don't know why)
>> the median dots disappear.
>>
>> bwplot(count ~ spray, data = InsectSprays,
>> groups = spray,
>> panel = panel.superpose,
>> panel.groups = function(..., box.ratio) {
>> panel.violin(...,
>> varwidth = FALSE, box.ratio = box.ratio, cut = 0)
>> panel.bwplot(..., box.ratio = .1)
>> },
>> fill = MyPalette
>> )
>>
>> I tried to change box.dot parameter to no avail. Not sure what is going on
>> here. It would appear that the panel.groups = function(){} is not sure where
>> to read graphical parameters from (just guessing). It would be interesting
>> to know your opinion.
>>
>
> The problem is that panel.superpose() passes on arguments 'col.line'
> and 'col.symbol', but unless otherwise specified, 'col' is passed as
> NA (which is an invisible color).
Thanks -- I made a wrong assumption that there was always a default
value different from NA.
> Your options are to specify pch =
> "|", which is not affected by 'col',
OK, this works fine.
> or to pass 'col' explicitly:
>
> bwplot(count ~ spray, data = InsectSprays,
> groups = spray,
> panel = panel.superpose,
> panel.groups = function(..., box.ratio, col) {
> panel.violin(..., col = col,
> varwidth = FALSE, box.ratio = box.ratio, cut = 0)
> panel.bwplot(..., col = "black", box.ratio = .1)
> },
> fill = MyPalette, pch = 16
> )
>
>
>
Works very well too, and thanks for adding "col = col" to
panel.violin(), which allowed me to control the color of the violins
independently as well as to specify parameters inside bwplot() via
"par.settings = list()" without any conflict arising from multiple calls
to "col=".
Kind regards,
Luigi
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