Package com.framed.cdss.utils

Class SlopeUtils

java.lang.Object

com.framed.cdss.utils.SlopeUtils

public class SlopeUtils
extends Object

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static final record	SlopeUtils.Sample

Constructor Summary

Constructors

Constructor	Description
SlopeUtils()

Method Summary

Modifier and Type	Method	Description
static double	computeSlope(Deque<SlopeUtils.Sample> win)	Computes the least-squares linear regression slope of the ETCO2 signal over the provided sliding window, using time in seconds relative to the first sample in the window.

Methods inherited from class java.lang.Object

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

Constructor Details

SlopeUtils

public SlopeUtils()

Method Details

computeSlope

public static double computeSlope(Deque<SlopeUtils.Sample> win)

Computes the least-squares linear regression slope of the ETCO2 signal over the provided sliding window, using time in seconds relative to the first sample in the window.

The slope is returned in units of mmHg/sec (assuming input values are mmHg).

Numerical stability: If the time axis degenerates (e.g., repeated identical timestamps), the denominator may be zero; in that case, the method returns 0.0.

Parameters:

win - Deque of recent samples (time/value) representing the current slope window.

Returns:

The regression slope in mmHg/sec; returns 0.0 if insufficient variance in time.