Types of User Objects

plist

A class of object that allows storing a set of key/value pairs. This is the equivalent to a 'dictionary' in other languages, like python or Objective-C. Since a history step must contain a plist object, this class cannot itself track history, since it would be recursive.

ao

A class of object that implements Analysis Objects. Such objects can store various types of numeric data: time-series, frequency-series , x-y data series, x-y-z data series, and arrays of numbers.

mfir

A class of object that implements Finite Impulse Response (FIR) digital filters.

miir

A class of object that implements Infinite Impulse Response (IIR) digital filters.

pzmodel

A class of object that represents transfer functions given in a pole/zero format.

rational

A class of object that represents transfer functions given in rational form.

parfrac

A class of object that represents transfer functions given as a series of partial fractions.

timespan

A class of object that represents a span of time. A timespan object has a start time and an end time.

ssm

A class of object that represents a statespace model.

smodel

A class of object that represents a parametric model of a chosen x variable. Such objects can be combined, manipulated symbolically, and then evaluated numerically.

pest

A class of object that represents the result of a fit with a chosen model. Such objects contain the estimated parameter values, the uncertainties, the covariance matrix, the estimated chi^2 and degrees of freedom. They can be evaluated to yield values predictions.

filterbank

A class of object that represents a bank of digital filters. The filter bank can be of type 'parallel' or 'serial'.

matrix

A class of object that allows storing other User Objects in a matrix-like array. There are various methods which act on the object array as if it were a matrix of the underlying data. For example, you can form a matrix of Analysis Objects, then compute the determinant of this matrix, which will yield another matrix object containing a single AO.

collection

A class of object that allows storing other User Objects in a cell-array. This is purely a convenience class, aimed at simplifying keeping a collection of different classes of user objects together. This is useful, for example, for submitting or retrieving a collection of user objects from/to an LTPDA Repository.

mfh

A class of object that allows wrapping around MATLAB function handles. They allow history tracking, and writing functions of: input (variable) parameters, constants (e.g. data) and so on.