[R] How to disable verbose grob results in pdf when using knitr with gridExtra?

[vod vos]

Hi every one,



I am using Knitr, R and Latex to produce pdf file. When using gridExtra to set up a gtable layout to place multiple grobs on a page,

 

grid.arrange(facetpoint1,pright1,pright2,pright3,pright4,pright5,pright6,pright7, ncol=2, layout_matrix=cbind(c(1,1,1,1,1,1,1),c(2,3,4,5,6,7,8)), widths=c(2,1))



the verbose of the infomation shows before the one figure in the pdf file:



## TableGrob (7 x 2) "arrange": 8 grobs ## z cells name grob ## 1 1 (1-7,1-1) arrange gtable[layout] ## 2 2 (1-1,2-2) arrange gtable[layout] ## 3 3 (2-2,2-2) arrange gtable[layout] ## 4 4 (3-3,2-2) arrange gtable[layout] ## 5 5 (4-4,2-2) arrange gtable[layout] ## 6 6 (5-5,2-2) arrange gtable[layout] ## 7 7 (6-6,2-2) arrange gtable[layout] ## 8 8 (7-7,2-2) arrange gtable[layout] 






When I ?grid.arrange, no ways were found to disable the verbose in the pdf file. Any ideas? 



Thanks.


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