reno.components

This module contains the various math and system dynamics object components necessary to make up a model and construct its equations.

Classes

Distribution(*operands[, per_timestep])	Represents a probability distribution or set that is drawn from for each sample (n) in a simulation.
EquationPart([sub_equation_parts])	The base object that represents some portion/subtree of a compute or equation tree.
ExtendedOperation(operands, implicit_components)	An operation defined in terms of other operations, and may require population before use.
Flag([eq, label])	Boolean value tracked for each step and sample in the simulation.
Flow([eq, label, doc, min, max, dim, group, ...])	A flow is a rate, a movement of some material/thing/quantity per some unit of time.
Function(f, *args[, inject_mathlib, ...])	Represents a call to a python function _outside_ of a model/system of equations.
HistoricalValue(tracked_ref, index_eq)	A wrapper class for a reference, specifically for getting a previous value indexed by some other equation.
Metric([eq, label])	Metrics run in a separate after-simulation analysis.
Operation(*operands)	Parent class to represent a mathematical operation in an equation.
Piecewise(equations, conditions)	A conditional allowing evaluation of two or more condition equations to determine which output equation to use.
Reference([label, doc])	A symbolic reference to some other equation component, e.g. a stock, flow, or variable.
Scalar(value)	A static, single value equation part, representing some simple value that doesn't need to be computed.
Stock([label, init, doc, min, max, dim, ...])	A stock represents some bucket or quantity of material/thing that can accumulate (in_flows) or deplete (out_flows) over time.
TimeRef()	A reference to the current simulation timestep that can be used in equations.
TrackedReference([eq, label, doc, min, max, ...])	A reference that keeps a matrix of all its values over a simulation for caching and reporting purposes.
Variable([eq, label, doc, min, max, dim, ...])	A variable is a static value(s) or function that can be used as part of other equations, e.g. flow definitons.