Convert Display Diagonal Size (inch) to Width and Height (cm)

This function converts a display's diagonal length in inches into its physical width and height in centimeters, assuming a specified aspect ratio. It is useful for psychological experiments and visual stimulus control, where precise physical screen dimensions are required.

Usage

diaginch_to_cm(diagonal_inch, aspect_ratio = c(16, 9))

Arguments

diagonal_inch: Numeric vector. Diagonal size(s) of the display in inches.
aspect_ratio: Numeric vector of length 2. The width-to-height ratio (default is c(16, 9) for a standard widescreen display).

Value

A data frame with two columns:

width_cm: Width of the display in centimeters.
height_cm: Height of the display in centimeters.

Examples

# Convert a 24-inch monitor with 16:9 aspect ratio
diaginch_to_cm(24)
#>   width_cm height_cm
#> 1 53.13124  29.88633

# Convert multiple displays at once
diaginch_to_cm(c(13, 24, 27))
#>   width_cm height_cm
#> 1 28.77942  16.18843
#> 2 53.13124  29.88633
#> 3 59.77265  33.62212

# Convert a 4:3 display
diaginch_to_cm(19, aspect_ratio = c(4, 3))
#>   width_cm height_cm
#> 1   38.608    28.956