r - Set width and height of graphic made using ggplot, grid, and gridExtra -

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if have graphic composed of several plots, 3 plots arranged vertically. gtable object , can drawn page with:

grid::grid.newpage() grid::grid.draw(plot)

however see plot in rstudio 'smushed up' in screenshot below:

enter image description here

as can see in bottom right corner squashed , titles overlap other elements of graphic.

if hit zoom , view plot lot bigger:

enter image description here

now know, if export gtable plot using pdf() or png() , such devices, can set width , height, , make big enough such plot not squashed.

however, instead of 1 of graphic devices, use export.grid, gridsvg package save svg file. if 

gridsvg::export.grid(plot)

then svg file exported looks squashed in rstudio plot window. question is, how can manipulate dimensions of graphic drawn svg without looking squashed? draw plot grid.newpage , grid.draw, wonder perhaps have specify size of page or drawing using grid.

thanks, ben.


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