Numerical integration using the trapezoidal rule for discrete data points. More...

#include <gin_integrator.h>

Public Member Functions
	Integrator ()=default
void	clear ()
double	getIntegral ()
void	addPoint (double x, double y)
void	addPoint (Point< double > point)
void	addPoints (juce::Array< Point< double > > points)

Detailed Description

Numerical integration using the trapezoidal rule for discrete data points.

Integrator calculates the definite integral of a function represented by a series of (x, y) data points using the trapezoidal rule. This is useful for computing areas under curves, cumulative sums, or any integration task where you have discrete data points rather than a continuous function.

The trapezoidal rule approximates the area between consecutive points as trapezoids, providing good accuracy for reasonably smooth data.

Key Features:

Simple and efficient numerical integration
Works with discrete data points
Accumulates integral as points are added
No memory overhead (streaming calculation)

Important: Points must be added in increasing x order for correct results.

Usage:

Integrator integrator;
 
// Add data points in increasing x order
integrator.addPoint(0.0, 0.0);
integrator.addPoint(1.0, 2.5);
integrator.addPoint(2.0, 4.0);
integrator.addPoint(3.0, 3.5);
integrator.addPoint(4.0, 1.0);
 
// Get the accumulated integral
double area = integrator.getIntegral();
 
// Clear and start over
integrator.clear();

See also: Spline, LeastSquaresRegression

Constructor & Destructor Documentation

◆ Integrator()

Integrator::Integrator ( )

default

Referenced by addPoints().

Member Function Documentation

◆ clear()

void Integrator::clear ( )

◆ getIntegral()

double Integrator::getIntegral ( )

◆ addPoint() [1/2]

void Integrator::addPoint	(	double	x,
		double	y )

◆ addPoint() [2/2]

void Integrator::addPoint ( Point< double > point )

◆ addPoints()

void Integrator::addPoints ( juce::Array< Point< double > > points )

References Integrator().

The documentation for this class was generated from the following file:

gin_integrator.h

Public Member Functions