exams.forge (version 1.0.11)

as_string: Convert Vectors to Strings or Formatted Representations

Description

These functions convert vectors into human-readable string representations. They can join elements, create LaTeX-formatted fractions, or label observations.

Usage

as_string(txt, collapse = ", ", last = ", and ")
as_sum(txt)
as_obs(txt, name = "x", sorted = FALSE, ...)
as_fraction(val, latex = FALSE, sorted = FALSE, ...)
lobs(txt, name = "x", sorted = FALSE, ...)
lstring(txt, collapse = ", ", last = ", and ")
lfrac(val, latex = FALSE, sorted = FALSE, ...)

Value

A single string, or a vector of formatted strings (for fractions in as_fraction).

Arguments

txt

Character vector to merge into a single string (used in as_string, as_obs).

collapse

Character string inserted between elements (default: ", ").

last

Character string used between the last two elements (default: ", and ").

name

Character string used as the observation name (default: "x"; used in as_obs).

sorted

Logical; if TRUE, sort the vector before conversion (default: FALSE).

...

Additional arguments passed to underlying functions.

val

Numeric vector of values to convert into fractions (used in as_fraction).

latex

Logical; if TRUE, returns fractions in LaTeX format \frac{.}{.} (default: FALSE; used in as_fraction).

Examples

x <- runif(5)
y <- c(TRUE, FALSE, NA)

# Basic string conversion
as_string(x)
as_string(y)
as_string(as.character(x))
as_string(as.character(y))

# Observations
as_obs(x)
as_obs(sort(x), sorted = TRUE)

# Fraction conversion
x <- round(runif(5), 2)
as_fraction(x)
as_fraction(x, latex = TRUE)

# Summing elements as a string
y <- round(runif(5), 2)
as_sum(y)