[R] lattice: packet.number() versus panel.number()

Benjamin Tyner btyner at gmail.com
Thu Aug 28 02:07:36 CEST 2014

Thanks David. It turns out that I was in fact using a custom index.perm,
but not on purpose. What happened was I used the "[" method on the
trellis object ( lattice:::`[.trellis`), which of course is nothing but
a short-cut for updating the index.perm. Lesson learned...


On 08/27/2014 02:10 AM, David Winsemius wrote:
> On Aug 26, 2014, at 3:25 PM, Benjamin Tyner wrote:
>> Hi,
>> According to
>> https://svn.r-project.org/R-packages/trunk/lattice/R/print.trellis.R,
>>    "[panel.number] is usually the same as, but can be different from
>> packet.number"
>> and I had been under the impression that as long as the user is not
>> using a custom index.cond nor perm.cond, the panel.number would in fact
>> be the same as the packet.number.
>> However, I have recently come across a case where the two are *not* the
>> same, even though I am not using a custom index.cond nor perm.cond.
>> So my question is, what might be some other possible situations in which
>> the two would be expected to differ?
> The immediate hypothesis that leaps to mind is cases where there are multiple pages. On each page I suspect the upper left numbering restarts with 1, but I suspect the packet numbers are sequential increasing.

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