latexSymb

Transform complex LaTex mathematical expressions into readable, composable R code. Instead of wrestling with backslashes and braces, express your mathematics naturally using familiar R syntax.

✨ Why latexSymb?

Before (Raw LaTex) 😓

latex \frac{d}{dt} \left \langle V,W \right \rangle = \left \langle \frac{DV}{dt}, W \right \rangle + \left \langle V, \frac{DW}{dt} \right \rangle

After (latexSymb) 🎉

```r vf1 <- lsymb("V") vf2 <- lsymb("W") inner <- function(x, y) ang(lsymb(x, ",", y)) cov.der <- function(x) lsymb("D", x) / "dt" ddt <- function(x) lsymb("d", x) / "dt"

ddt(inner(vf1, vf2)) eq inner(cov.der(vf1), vf2) + inner(vf1, cov.der(vf2)) ```

🚀 Key Features

1. Natural Mathematical Syntax

```r

Division automatically becomes \frac

x / y # → \frac{x}{y}

Powers become superscripts

x^2 # → x^{2}

Subscripts with under()

x |> under(i) # → x_{i} ```

2. Automatic Delimiter Sizing

No more \left and \right headaches! r pths(x / y) # Parentheses with auto-sizing ang(x, y) # Angle brackets ⟨x,y⟩ sqbr(x + y) # Square brackets [x+y] br(condition) # Braces {condition}

3. Composable Mathematical Functions

Build complex expressions from simple, reusable parts: ```r

Define semantic functions

exp_val <- function(x) lsymb("\mathbb{E}") * sqbr(x) sq <- function(x) pths(x)^2 abs <- function(x) lsymb("\abs{", x, "}")

Compose naturally

exp_val(sq(abs(x) - y)) # → 𝔼[(|x| - y)²] ```

4. Multi-line Equations Made Simple

r proof_steps <- list( ruler * dist(x, y) * leq * dist(x, z) + dist(z, y) * endl, ruler * thus * dist(x, y) - dist(x, z) * leq * dist(z, y) ) |> lenv("align*", rows = _)

5. Common Symbols Pre-loaded

```r data(common) attach(common)

Instantly use: alpha, beta, mu, sigma, eq, leq, sum, int, infty...

```

📦 Installation

Released version from CRAN: r install.packages("latexSymb")

Development version from GitHub: ```r

install.packages("devtools")

devtools::install_github("nicoesve/latexSymb") ```

🎓 Quick Example: Central Limit Theorem

```r library(latexSymb) data(common) attach(common)

Define components

samplemean <- lsymb("\bar{x}") sqrt <- function(x) lsymb("\sqrt{", x, "}") convdistr <- lsymb("\overset{d}{\rightarrow}")

Express the theorem

clt <- sqrt(n) * (pths(samplemean - mu) / si) * convdistr * lsymb("N(0,1)") ```

📚 Learn More

• Vignettes: See vignette("vignette1", package = "latexSymb") for getting started
• Advanced Usage: vignette("advanced_usage", package = "latexSymb") for complex examples
• Documentation: Full function reference at ?latexSymb

🎯 Perfect For

• 📊 Statistical reports with complex notation
• 🎓 Academic papers and presentations
• 📚 Course materials and textbooks
• 🧮 Any document with serious mathematics

Stop fighting with LaTex syntax. Start expressing your mathematics naturally with latexSymb!