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Change the unit of figure size

By default, R Markdown employs inch as a unit of figure size. You can change it by hook_figure_unit.

CAUTIONS

• This hook must not run twice in a document. Otherwise, you will face unexpected figure size.
• RStudio IDE do not detect the hook and treats fig.width and fig.height in inches.
• This hook sets NULL to the fig.retina chunk option.

library(chunkhooks)
hook_figure_unit()
#> fig.retina is set NULL

# fig.width=50, fig.height=50 (50mm * 50mm)
plot(1)

hook_figure_unit("cm")

measurements::conv_unit_options$length
#>  [1] "angstrom"   "nm"         "um"         "mm"         "cm"        
#>  [6] "dm"         "m"          "km"         "inch"       "ft"        
#> [11] "foot"       "feet"       "yd"         "yard"       "fathom"    
#> [16] "mi"         "mile"       "naut_mi"    "au"         "light_yr"  
#> [21] "light_year" "parsec"     "point"

These binaries (installable software) and packages are in development.
They may not be fully stable and should be used with caution. We make no claims about them.