search for: latex_hints

Hello, I found my Rnw file generated strange symbols in pdf file. For instance, on page 4 of the following file, http://cran.r-project.org/web/packages/cts/vignettes/kf.pdf you can see Belcher et~al on line 2, and Figure~1 on line 5. The symbol ~ should not appear in the pdf file although the symbol was in the original Rnw file (something like Figure~\ref{...}, section~\ref{...}). On page 1,