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windows - How can I get the screen resolution in R

How can I get screen resolution (height, width) in pixels?

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You could use commad-line interface to WMI

> system("wmic desktopmonitor get screenheight")
ScreenHeight  
900   

You could capture result with system

(scr_width <- system("wmic desktopmonitor get screenwidth", intern=TRUE))
# [1] "ScreenWidth  
" "1440         
" "
"
(scr_height <- system("wmic desktopmonitor get screenheight", intern=TRUE))
# [1] "ScreenHeight  
" "900           
" "
" 

With multiple screens, the output is, e.g.,

[1] "ScreenWidth  
" "1600         
" "1600         
" ""

We want all but the first and last values, converted to numbers

as.numeric(c(
  scr_width[-c(1, length(scr_width))], 
  scr_height[-c(1, length(scr_height))]
))
# [1] 1440  900

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