r - Different pander performance between .Rmd and .Rnw -

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i'm having trouble getting pander work same way in .rnw file in .rmd file. in both, i'm using knitr weave pdf. .rmd file looks 

--- title: "my title" output: pdf_document --- ```{r} library(pander) panderoptions('big.mark', ',') panderoptions('table.style','rmarkdown') panderoptions('table.alignment.default','right') panderoptions('table.alignment.rownames','left') panderoptions('digits','10') df <- data.frame('a' = 1:3, 'b' = 4:6, 'c' = 7:9) pander(df) ```

the dataframe looks nice in output converts dashed lines solid ones. when try similar in .rnw file, printed if sentence rather table.

\documentclass{article} \begin{document} <<model_data>>= library(pander) panderoptions('big.mark', ',') panderoptions('table.style','rmarkdown') panderoptions('table.alignment.default','right') panderoptions('table.alignment.rownames','left') panderoptions('digits','10') df <- data.frame('a' = 1:3, 'b' = 4:6, 'c' = 7:9) pander(df) @ \end{document}

this looks terrible, can call pandoc.table(df) instead , printed in table format @ least has dashed lines unlike when printed in .rmd file. how print in .rmd file inside of .rnw file?


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