Curve

module wntr.network.elements

class Curve

Bases: object

Curve base class.

Constructor

This class is intended to be instantiated through the add_curve method.

Parameters:

• name (str) – Name of the curve.

• curve_type (str) – The type of curve: None (unspecified), HEAD, HEADLOSS, VOLUME or EFFICIENCY

• points (list) – The points in the curve. List of 2-tuples (x,y) ordered by increasing x

• original_units (str) – The units the points were defined in

• current_units (str) – The units the points are currently defined in. This MUST be ‘SI’ by the time one of the simulators is run.

• options (Options, optional) – Water network options to lookup headloss function

---

__init__(name, curve_type=None, points=[], original_units=None, current_units='SI', options=None)

set_units(original=None, current=None)

Set the units flags for the curve.

Use this after converting the points, if necessary, to indicate that conversion to SI units is complete.

to_dict()

Dictionary representation of the curve

property current_units

The current units that the points are in

property curve_type

None (unspecified), HEAD, HEADLOSS, VOLUME or EFFICIENCY

Type:

The type of curve

property name

Curve names must be unique among curves

property num_points

Returns the number of points in the curve.

property original_units

The original units the points were written in.

property points

The points in the curve. List of 2-tuples (x,y) ordered by increasing x