R help - Apr 2005 - sweave bwplot error

On Thu, 07 Apr 2005 13:24:42 +0200 Christoph Lehmann wrote:
> Hi
> I use sweave and have a problem with the following figure, but not
> with other figures:
> 
> tt <- data.frame(c("a", "b", "c"), c(1.2,
3, 4.5))
> names(tt) <- c("x1", "x2")
> bwplot(x2 ~x1, data = tt)
> 
> ok now in sweave:
> 
> \begin{figure}[H]
>    \begin{center}
> <<echo=FALSE, fig=TRUE, height=5, width=10>>>
lset(col.whitebg())
> bwplot(x2 ~x1, data = tt)
> @
>      \caption{xxx}
>    \end{center}
> \end{figure}
> 
> PROBLEM:
> the pdf of the figure is not correctly created (neither the esp) and
> the error I get from sweave is:
> pdf inclusion: required page does not exist <0>
This is covered by FAQ 7.22. (you need to print() the plot)
Z
> thanks for help
> 
> christoph
> 
> ______________________________________________
> R-help at stat.math.ethz.ch mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide!
> http://www.R-project.org/posting-guide.html
>

>>>>> On Thu, 07 Apr 2005 13:24:42 +0200,
>>>>> Christoph Lehmann (CL) wrote:
  > Hi
  > I use sweave and have a problem with the following figure, but not with 
  > other figures:

  > tt <- data.frame(c("a", "b", "c"),
c(1.2, 3, 4.5))
  > names(tt) <- c("x1", "x2")
  > bwplot(x2 ~x1, data = tt)

  > ok now in sweave:

  > \begin{figure}[H]
  >    \begin{center}
  > <<echo=FALSE, fig=TRUE, height=5, width=10>>  >
lset(col.whitebg())
  > bwplot(x2 ~x1, data = tt)
  > @
  >      \caption{xxx}
  >    \end{center}
  > \end{figure}

  > PROBLEM:
  > the pdf of the figure is not correctly created (neither the esp) and the 
  > error I get from sweave is:
  > pdf inclusion: required page does not exist <0>

>From the Sweave FAQ:

A.6  Why do R lattice graphics not work?

The commands in package lattice have different behavior than the
standard plot commands in the base package: lattice commands return an
object of class "trellis", the actual plotting is performed by the
print method for the class. Encapsulating calls to lattice functions
in print() statements should do the trick, e.g.:

<<fig=TRUE>>=  
library(lattice)  
print(bwplot(1:10))  
@

should work.

-- 
-------------------------------------------------------------------
                        Friedrich Leisch 
Institut f?r Statistik                     Tel: (+43 1) 58801 10715
Technische Universit?t Wien                Fax: (+43 1) 58801 10798
Wiedner Hauptstra?e 8-10/1071
A-1040 Wien, Austria             http://www.ci.tuwien.ac.at/~leisch

Christoph Lehmann wrote:
> Hi
> I use sweave and have a problem with the following figure, but not with 
> other figures:
> 
> tt <- data.frame(c("a", "b", "c"), c(1.2,
3, 4.5))
> names(tt) <- c("x1", "x2")
> bwplot(x2 ~x1, data = tt)
> 
> ok now in sweave:
> 
> \begin{figure}[H]
>   \begin{center}
> <<echo=FALSE, fig=TRUE, height=5, width=10>>>
lset(col.whitebg())
> bwplot(x2 ~x1, data = tt)
> @
>     \caption{xxx}
>   \end{center}
> \end{figure}
> 
> PROBLEM:
> the pdf of the figure is not correctly created (neither the esp) and the 
> error I get from sweave is:
> pdf inclusion: required page does not exist <0>
> 
> thanks for help
> 
> christoph
You need wrap print() round lattice functions to get them to do anything 
  in situations like this. See the Sweave FAQ for this FAQ:

http://www.ci.tuwien.ac.at/~leisch/Sweave/FAQ.html#x1-8000A.6

G

-- 
%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%
Gavin Simpson                     [T] +44 (0)20 7679 5522
ENSIS Research Fellow             [F] +44 (0)20 7679 7565
ENSIS Ltd. & ECRC                 [E] gavin.simpsonATNOSPAMucl.ac.uk
UCL Department of Geography       [W] http://www.ucl.ac.uk/~ucfagls/cv/
26 Bedford Way                    [W] http://www.ucl.ac.uk/~ucfagls/
London.  WC1H 0AP.
%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%~%

On Thu, Apr 07, 2005 at 01:24:42PM +0200, Christoph Lehmann
wrote:
> \begin{figure}[H]
>   \begin{center}
> <<echo=FALSE, fig=TRUE, height=5, width=10>>>
lset(col.whitebg())
> bwplot(x2 ~x1, data = tt)
> @
>     \caption{xxx}
>   \end{center}
> \end{figure}
> 
> PROBLEM:
> the pdf of the figure is not correctly created (neither the esp) and the 
> error I get from sweave is:
> pdf inclusion: required page does not exist <0>
You need a print() statement around bwplot() -- see the FAQ.

Dirk
-- 
Better to have an approximate answer to the right question than a precise 
answer to the wrong question.  --  John Tukey as quoted by John Chambers

Hi
I use sweave and have a problem with the following figure, but not with 
other figures:

tt <- data.frame(c("a", "b", "c"), c(1.2, 3,
4.5))
names(tt) <- c("x1", "x2")
bwplot(x2 ~x1, data = tt)

ok now in sweave:

\begin{figure}[H]
   \begin{center}
<<echo=FALSE, fig=TRUE, height=5, width=10>>lset(col.whitebg())
bwplot(x2 ~x1, data = tt)
@
     \caption{xxx}
   \end{center}
\end{figure}

PROBLEM:
the pdf of the figure is not correctly created (neither the esp) and the 
error I get from sweave is:
pdf inclusion: required page does not exist <0>

thanks for help

christoph