Calculate the Height and Width of a Text String

getTextSize calculates the size of a box that contains the specified text string, the tight box surrounding it, and the baseline.

getTextSize(text, font_face = "simplex", font_scale = 1,
  italic = FALSE, thickness = 1)

Arguments

text	A character string representing the text to be drawn.
font_face	A character string representing the font type of the text (default: "simplex"). See notes for a list of available font types.
font_scale	A numeric value representing the scale factor by which the font-specific base size is multiplied (default: 1).
italic	A logical specifying whether the text should italicized (default: FALSE).
thickness	A numeric value representing the thickness in pixels of the line (default: 1).

A two-element vector corresponding to the height and width of the text string.

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