# the document d:/roffice.odt needs some code like (please remove leading #)
# not interpreted text
# <<MyOutput,echo=TRUE>>=                 
# print(iris[1:10,])
# @
# not interpreted text

install.packages("odfWeave", dependencies=TRUE)  
library(utils)
library(odfWeave)
odfWeave("d:/roffice.odt","d:/roffice_.odt")