[R] xyplot and lwd

[David Winsemius]

On Sep 5, 2013, at 2:54 AM, Daniel Hornung wrote:

>> On Wed, Sep 4, 2013 at 1:45 PM, Daniel Hornung
> <daniel.hornung at ds.mpg.de>wrote:
>>> Hello,
>>>
>>> can it be that xyplot does not support the lwd argument?

The lattice plotting system uses the grid plotting engine and does  
accepts some base  par-type arguments but not all. You may need to  
read more about lattice and grid:

?lattice
?trellis.par.set
require(grid)
?gpar

-- 
David.
>>>
>>> At least here, the following still shows thin lines, as opposed to  
>>> the
>>> regular
>>> plot command:
>>>
>>> xyplot(Sepal.Length ~ Sepal.Width, data = iris, pch=4, lwd=4)
>
> On Thursday, September 05, 2013 00:33:32 Bert Gunter wrote:
>> You should get no lines at all, as you have not specified that  
>> lines be
>> drawn. Use the "type" argument to do so.
>>
>> xyplot(rnorm(5) ~1:5,pch=4)  ## points only
>> xyplot(rnorm(5) ~1:5,pch=4,type="b",lwd=4) ## points with thick lines
>>
>> read ?panel.xyplot carefully (the default panel function for  
>> xyplot) for
>> details
>>
>> Cheers,
>> Bert
>
> Hello Bert,
>
> no, maybe I expressed myself ambiguously: I was referring to the line
> thickness of the symbols, not a line between symbols:
>
> xyplot(rnorm(5) ~ 1:5, pch=4, lwd=4)
> versus
> plot(rnorm(5), 1:5, pch=4, lwd=4)
>
> I would like the points (4("x") in this case) to have thicker lines.
>
> Cheers,
> Daniel
>

David Winsemius, MD
Alameda, CA, USA