rxode2 to symengine environment

rxode2 to symengine environment

Usage

rxToSE(
  x,
  envir = NULL,
  progress = FALSE,
  promoteLinSens = TRUE,
  parent = parent.frame()
)

.rxToSE(x, envir = NULL, progress = FALSE)

rxFromSE(
  x,
  unknownDerivatives = c("forward", "central", "error"),
  parent = parent.frame()
)

.rxFromSE(x)

Arguments

x

expression

envir

default is NULL; Environment to put symengine variables in.

progress

shows progress bar if true.

promoteLinSens

Promote solved linear compartment systems to sensitivity-based solutions.

parent

is the parent environment to look for R-based user functions

unknownDerivatives

When handling derivatives from unknown functions, the translator will translate into different types of numeric derivatives. The currently supported methods are:

- `forward` for forward differences
- `central` for central differences
- `error` for throwing an error for unknown derivatives

Value

An rxode2 symengine environment

See also

Other Symbolic tools: rxS()

Author

Matthew L. Fidler

Examples

if (requireNamespace("symengine", quietly = TRUE)) {
  # rxode2 syntax -> symengine syntax
  print(rxToSE("central / v * exp(-ke * t)"))
  # and back
  print(rxFromSE("exp(-ke*t)*central/v"))
}
#> [1] "central/v*exp(- ke*t)"
#> [1] "exp(-ke*t)*central/v"