On May 10, 2014, at 6:06 PM, Eduardo M. A. M. Mendes wrote:

> library(zoo);
> library(lattice);
> 
> a=matrix(runif(100),25,4);
> b=zoo(a,seq(1,25));
> names(b)=c("How to change the font size?","2","3","4");
> xyplot(b)
> 

xyplot(b, strip=strip.custom( par.strip.text=list(cex=.5)))

-- 
David.
> Ed
> 
> On May 10, 2014, at 9:52 PM, David Winsemius <dwinsem...@comcast.net> wrote:
> 
>> 
>> On May 10, 2014, at 5:47 PM, Eduardo M. A. M. Mendes wrote:
>> 
>>> Yes, you are right.  I meant panels,   xyplot generates 22 panels, which 
>>> one with y-axis, x-axis and a title.  I need to change the font size of 
>>> title in the panels.
>>> 
>> 
>> It appears to me that the answer is probably in :
>> 
>> ?strip.default
>> 
>> Still no example, so no code.
>> 
>> -- 
>> David.
>> 
>>> Ed
>>> 
>>> 
>>> 
>>> 
>>> On May 10, 2014, at 8:04 PM, David Winsemius <dwinsem...@comcast.net> wrote:
>>> 
>>>> 
>>>> On May 10, 2014, at 3:30 PM, Eduardo M. A. M. Mendes wrote:
>>>> 
>>>>> Hello
>>>>> 
>>>>> Many thanks.
>>>>> 
>>>>> par.main.text is the main title (on top of all plots).  I need to change 
>>>>> the each of the titles in the, say, subplots.
>>>>> 
>>>> 
>>>> One gets the response the fills ones needs when those needs are clearly 
>>>> expressed and an example provide that illustrates the problem. There being 
>>>> no "subplot" in lattice, I'm guessing that you mean "panel" for that term, 
>>>>  and the "title" is in fact the strip annotation, but I am finished with 
>>>> throwing out guesswork solutions until clarity is established.
>>>> 
>>>> -- 
>>>> David.
>>>> 
>>>>> Ed
>>>>> 
>>>>> 
>>>>> On May 10, 2014, at 7:05 PM, David Winsemius <dwinsem...@comcast.net> 
>>>>> wrote:
>>>>> 
>>>>>> 
>>>>>> On May 10, 2014, at 2:26 PM, Eduardo M. A. M. Mendes wrote:
>>>>>> 
>>>>>>> Hello
>>>>>>> 
>>>>>>> I am using xyplot (lattice) to plot a xts variable.  There are 20 
>>>>>>> variables within the xts variable (index by a datetime vector sampled 
>>>>>>> every 1 minute).  The results are very nice and help me to understand 
>>>>>>> what is going on with the data. However since the names (labels of each 
>>>>>>> variable) within the xts variable are large, the title of each plot is 
>>>>>>> cropped.   How can I select the font size of the titles without 
>>>>>>> changing all other fonts?
>>>>>>> 
>>>>>> 
>>>>>> tp <- trellis.par.get()
>>>>>> names(tp)
>>>>>> 
>>>>>> ... includes "par.main.text", so my first try was to use the xyplot() 
>>>>>> facilities to change cex for 'main'. Seems to work as expected:
>>>>>> 
>>>>>> xyplot( 1~1, main="test", par.settings=list(par.main.text=list(cex=5)))
>>>>>> 
>>>>>> --
>>>>>> 
>>>>>> David Winsemius
>>>>>> Alameda, CA, USA
>>>>>> 
>>>>> 
>>>> 
>>>> David Winsemius
>>>> Alameda, CA, USA
>>> 
>> 
>> David Winsemius
>> Alameda, CA, USA
> 

David Winsemius
Alameda, CA, USA

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