0.9.4 (01/03/2022)

Bug fixes

• Fixes bug where certain commands would fail outside of math mode (e.g. TeX(r"(\alpha + \beta)")) (fixes #45).
• Fixes edge case where TeX(r"($^{18}$ O)") (e.g. a free-standing superscript or subscript) would not render.

0.9.3 (02/02/2022)

Bug fixes

• Fix an edge case encountered with back-to-back spacing or certain types of commands (e.g. TeX(r"(a \,\, b)")) (fixes issue #40)
• Fix handling of compare operators (=, <, >, \ge, \le) (fixes issue #38)
• TeX("") returns expression('') (an empty expression of length 1) (fixes issue #40)

0.9.0 I01/20/2022)

New features

• Completely rewritten parser that is much more robust, produces valid plotmath expressions in more situations, and improved rendering by making use of more plotmath features.
• Added a vignette containing a browsable gallery of LaTeX commands supported. You can pull it up using vignette("supported-commands", package = "latex2exp").
• Added the following LaTeX commands and symbols:
  • \Upsilon and \varpi for Greek letter variants
  • \uparrow, \downarrow, \Uparrow, \Downarrow, \to
  • \euro for the euro character
  • \langle, \rangle for angle bracket (supported in R 4.1)
  • \lceil, \rceil, \lfloor, \rfloor for ceil/floor brackets
  • \| for double-pipe brackets (\norm{expr} is an alternative command for typesetting a vector norm).
  • Note that the angle, ceil, floor, pipe and double pipe brackets are not scalable delimiters, because of plotmath limitations.
  • \bra, \ket, \braket for representing vectors with the braket notation
  • \smiley, \diamond, \sharp, \eightnote, \twonotes, \sun, \venus, \mars, \Exclam, \dagger, \ddagger, \(up|down|right|left)triangle
• Improved the appearance of round parentheses. TeX(r"($\alpha(\beta)$)") now renders more similarly to how plotmath renders the expression alpha(beta).
• Improved the appearance of ,, ' and '' in math mode.
• Improved the appearance of \frac fractions. Now a small space is inserted after the fraction, so that multiple fractions are separated.
• Added a test suite covering a large number of LaTeX expressions, edge cases, and examples from GitHub.
• Refactored and improved code documentation.

Bug fixes

• Fixes #33 (adds \lceil, \rceil, \lfloor, \rfloor)
• Fixes #24 (can mix & match different types of brackets, e.g. TeX("$\\left(\\frac{M}{L}\\right.$"))

0.5.0 (03/14/2021)

New features

• Update documentation to use the new raw strings introduced in R 4.0 (which lets one do away with the quoting of the backslash character; e.g. one can use TeX(r'($\alpha^\beta$)') rather than TeX('\\alpha^\\beta))
• Adds parameters bold and italic to TeX(). These can be used to make the entire expression bold or italic.
• Adds \phantom{} (PR)

0.4.0 [08/29/2015]

New features

• Deprecated the latex2exp() function; use TeX() instead.
• Added \lbrack and \rbrack to type left and right square brackets.

0.3.3 [08/11/2015]

Bug fixes

Fixes bug #4 (“fix parsing of numbers”), where certain numbers inside formulas where not parsed correctly.

0.3.2 [07/28/2015]

Bug fixes

Fixes bug #3 (“subscript and superscript style”). latex2exp now renders combined subscripts and superscripts correctly.

0.3.1 [07/02/2015]

Bug fixes

Fixes bug #2 (white space causes unexpected behaviour). latex2exp should now be a bit more compliant with how LaTeX handles whitespace.

0.3.0 [06/30/2015]

latex2exp is now a proper package.

0.2.0 [06/29/2015]

Formulas must now be enclosed between dollar characters ($), as in LaTeX proper. Text does not need to be enclosed in \text tags anymore.