Package com.frcteam3255.utils

Class SN_Lerp

java.lang.Object

com.frcteam3255.utils.SN_Lerp

public class SN_Lerp
extends Object

Linear Interpolation Table for finding the best value based on limited data points. "Borrowed" from 1706's 2022 code.

How to use:

1. Make list of SN_Point2D's that contain gathered information

2. Create new SN_Lerp with this list of points

3. On the created SN_Lerp, call getOutput() with the desired x value and it will return a linearly interpolated y value between the two closest datapoints

Field Summary

Fields

Modifier and Type	Field	Description
final int	size

Constructor Summary

Constructors

Constructor	Description
SN_Lerp(SN_Point2D... points)	Create new SN_Lerp

Method Summary

Modifier and Type	Method	Description
double	getOutput(double input)	Get a linearly interpolated output from the table
SN_Point2D[]	getTable()	Get list of points
double[]	getX()	Get X values
double[]	getY()	Get Y Values
static double	interpolate(double input, SN_Point2D point1, SN_Point2D point2)	Interpolate between two SN_Point2Ds

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

size

public final int size

Constructor Details

SN_Lerp

public SN_Lerp(SN_Point2D... points)

Create new SN_Lerp

Parameters:

points - List of SN_Point2D's

Method Details

getOutput

public double getOutput(double input)

Get a linearly interpolated output from the table

Sequentially searches through all values of table. May not perform well with large datasets

Parameters:

input - X input

Returns:

Linearly interpolated Y value between the two closest datapoints

interpolate

public static double interpolate(double input,
 SN_Point2D point1,
 SN_Point2D point2)

Interpolate between two SN_Point2Ds

Parameters:

input - Desired X value

point1 - Closest point below desired X value

point2 - Closest point above desired X value

Returns:

interpolated Y value

getX

public double[] getX()

Get X values

Returns:

X values

getY

public double[] getY()

Get Y Values

Returns:

Y Values

getTable

public SN_Point2D[] getTable()

Get list of points

Returns:

list of points