drop_u: Drop unit in equation

In sdbuildR: Easily Build, Simulate, and Visualise Stock-and-Flow Models

Drop unit in equation

Description

In rare cases, it may be desirable to drop the units of a variable within an equation. Use drop_u() to render a variable unitless. See u() for more information on the rules of specifying units. Note that units are only supported in Julia, not in R.

Usage

drop_u(x)

Arguments

x	Variable with unit

Value

Unitless variable (only in Julia)

See Also

model_units(), unit_prefixes(), u(), convert_u()

Examples

# For example, the cosine function only accepts unitless arguments or
# arguments with units in radians or degrees
sfm <- xmile() |>
  build("a", "constant", eqn = "10", units = "minutes") |>
  build("b", "constant", eqn = "cos(drop_u(a))")

sdbuildR documentation built on Nov. 19, 2025, 5:07 p.m.