It's been a while since this thread appeared, but I had the same problem
and don't want to keep the solution for myself.
A small, reproducible example:
<<cache=true>>=
a=1
@
<<>>=
a+1
@
Compiling with cacheSweave gives an error:
> library(cacheSweave)
Lade nötiges Paket: filehash
filehash: Simple key-value database (2.0-1 2008-12-19)
Lade nötiges Paket: stashR
A Set of Tools for Administering SHared Repositories (0.3-3 2009-03-26)
> Sweave("cacheSweaveExample.rnw", driver=cacheSweaveDriver)
Writing to file cacheSweaveExample.tex
Processing code chunks ...
1 : echo term verbatim
Fehler in data.frame(chunk = options$label, chunkprefix = chunkprefix, :
arguments imply differing number of rows: 0, 1
The solution is to use named code chunks as in this corrected example:
<<a, cache=true>>=
a=1
@
<<b>>=
a+1
@
The problem is that the cacheSweave driver tries to store the label of a
code chunk, along with other information, in a data frame. If there is
no label, the corresponding variable is NULL which gives an error.
I don't know if this is a bug or intended. I think it is more safe this
way than to rely on some automatic labelling. Anyway, there should be a
note in the documentation.
Shige Song
Sat, 25 Jul 2009 20:07:47 -0700
Dear All,
I have been using Sweave (mainly via the Sweave.sh script) and really like
it. I am working a paper (using Sweave, of course) which includes several
time-consuming computations, and it gets tedious to re-compile the whoel
thing every time I made changes. Then I discover the "cacheSweave" package,
which seems the right solution to my problem. I only have on problem. Here
is what I did:
----------------------------------------------
<<results=hide,echo=false>>=
library(foreign)
library(Zelig)
library(memisc)
options(digits=4)
@
<<echo=false>>=
d <- read.dta("~/project/abortion/data/data_transition_wide.dta")
@
...
----------------------------------------------
It can be compiled using "Sweave.sh foo.Rnw", but when I tried "Sweave.sh -c
foo.Rnw", I got error message:
"...Processing code chunks ...
1 : term hide
Error in data.frame(chunk = options$label, chunkprefix = chunkprefix, :
arguments imply differing number of rows: 0, 1"
I thought it might be an imcompatibiltiy problem between the cacheSweave and
the foreign packages, but the problem was still there when I tried to read
the data in using "read.table" function.
Any ideas? Many thanks.
Best,
Shige
--
Andreas Borg
Medizinische Informatik
UNIVERSITÄTSMEDIZIN
der Johannes Gutenberg-Universität
Institut für Medizinische Biometrie, Epidemiologie und Informatik
Obere Zahlbacher Straße 69, 55131 Mainz
www.imbei.uni-mainz.de
Telefon +49 (0) 6131 175062
E-Mail: b...@imbei.uni-mainz.de
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