org.epics.vtype

Interface Statistics

All Known Subinterfaces:

VStatistics

All Known Implementing Classes:

PVFieldToVStatistics

public interface Statistics

Basic type for statistical information of numeric types. The methods never return null, even if no connection was ever made. One must always look at the alarm severity to be able to correctly interpret the value.

This type can be used regardless of the method used to calculate the average (instances: Σx_i/N, time: Σx_iΔt_i/Δt, time with linear interpolation, exponential backoff, ...).

No integer statistics, since averages are not integer in general.

Author:

carcassi

Method Summary

Methods

Modifier and Type	Method and Description
Double	getAverage() The average.
Double	getMax() The maximum value.
Double	getMin() The minimum value.
Integer	getNSamples() The number of samples.
Double	getStdDev() The standard deviation.

Method Detail

getAverage

Double getAverage()

The average. Never null.

Returns:

the average

getStdDev

Double getStdDev()

The standard deviation. Never null.

Returns:

the standard deviation

getMin

Double getMin()

The minimum value.

Returns:

the minimum

getMax

Double getMax()

The maximum value.

Returns:

the maximum

getNSamples

Integer getNSamples()

The number of samples.

Returns:

the number of samples