Determine lines per page (LPP) and characters per page (CPP) based on font and page type

Usage

page_lcpp(
  page_type = page_types(),
  landscape = FALSE,
  font_family = "Courier",
  font_size = 8,
  lineheight = 1,
  margins = c(top = 0.5, bottom = 0.5, left = 0.75, right = 0.75),
  pg_width = NULL,
  pg_height = NULL,
  fontspec = font_spec(font_family, font_size, lineheight)
)

Arguments

page_type

(string)
name of a page type. See page_types. Ignored when pg_width and pg_height are set directly.

landscape

(flag)
whether the dimensions of page_type should be inverted for landscape orientation. Defaults to FALSE, ignored when pg_width and pg_height are set directly.

font_family

(string)
name of a font family. An error will be thrown if the family named is not monospaced. Defaults to "Courier".

font_size

(numeric(1))
font size. Defaults to 12.

lineheight

(numeric(1))
line height. Defaults to 1.

margins

(numeric(4))
named numeric vector containing "bottom", "left", "top", and "right" margins in inches. Defaults to .5 inches for both vertical margins and .75 for both horizontal margins.

pg_width

(numeric(1))
page width in inches.

pg_height

(numeric(1))
page height in inches.

fontspec

(font_spec)
a font_spec object specifying the font information to use for calculating string widths and heights, as returned by font_spec().

Value

A named list containing LPP (lines per page) and CPP (characters per page) elements suitable for use by the pagination machinery.

Examples

page_lcpp()
#> $cpp
#> [1] 105
#> 
#> $lpp
#> [1] 90
#> 
page_lcpp(font_size = 10)
#> $cpp
#> [1] 84
#> 
#> $lpp
#> [1] 72
#> 
page_lcpp("a4", font_size = 10)
#> $cpp
#> [1] 81
#> 
#> $lpp
#> [1] 76
#> 

page_lcpp(margins = c(top = 1, bottom = 1, left = 1, right = 1))
#> $cpp
#> [1] 97
#> 
#> $lpp
#> [1] 81
#> 
page_lcpp(pg_width = 10, pg_height = 15)
#> $cpp
#> [1] 127
#> 
#> $lpp
#> [1] 126
#>