load_font: Load a math font from an OTF file
In gridmicrotex: Native 'LaTeX' Math Rendering for Grid Graphics

load_font

R Documentation

Load a math font from an OTF file

Description

Loads an OTF/TTF math font into MicroTeX's internal font registry. The font's OpenType MATH table is parsed directly in C++ and the required metrics are synthesised on the fly. You can download free math fonts like Latin Modern Math (default math fonts in LaTeX) and load it with load_font() to use it for math rendering.

Usage

load_font(otf_path)

Arguments

otf_path

Path to the OTF/TTF font file.

Details

The font is also registered with the systemfonts package so it can be selected for surrounding plot text via gp = gpar(fontfamily = "...") without being installed system-wide.

Value

Invisibly returns NULL.

Text fonts

This function is only for math fonts (fonts with an OpenType MATH table). Plain text fonts used inside \text{} blocks are resolved automatically by systemfonts from the gp$fontfamily argument — no load_font() call required.

Examples


  # We will download and load Latin Modern Math
  url <- "https://mirrors.ctan.org/fonts/lm-math/opentype/latinmodern-math.otf"
  math_fnt <- file.path(tempdir(), "latinmodern-math.otf")
  download.file(url = url, destfile = math_fnt, mode = "wb")
  load_font(math_fnt)

  available_math_fonts()

gridmicrotex documentation built on May 16, 2026, 5:06 p.m.