LTPDA Toolbox™

contents

Version 2.7 LTPDA Toolbox Software

This table summarizes what's new in Version 2.7:

• Introduction
• Main Changes
• Copying Objects
• History context
• Function handle objects
• New Methods
• Changes to methods
• LTPDA Repository Interaction
• MANTIS Issues Resolved
• Detailed changes since v2.6.1

Introduction

This version of LTPDA is 2.7. This document lists the changes since V2.6.1.

This version requires MATLAB 2010a or above.

Main Changes

This version of LTPDA contains many under-the-hood improvements, particularly in the area of speed, and also some changes to the underlying data structures for analysis objects. In addition, a new test infrastructure is under development which includes a significant number of new unit tests. As a result a large number of bug fixes have been made.

Copying Objects

In order to make deep copies of objects, users should now use the copy() method rather than the old (and confusing) copy constructor. So, instead of

a = ao.randn(10,1)
b = ao(a)

users should now do

b = copy(a)

History context

When tracking processing steps the ‘context’ in which the current command is executed is captured in the history structure. For example, it may capture the name of the script or pipeline being executed. In a later release this may be used to group history steps in the history tree displays.

Function handle objects

Function handle objects have a new property ‘transform’ where you can specify a single or a list of functions that should be applied to the input objects prior to evaluating the function.

New Methods

• the ao class has a new method subsData which can be used to replace segments of a data series in different ways.
• the ao class has a new method cgfill which can replace segments of a data series with constrained gaussian noise generated from an input spectral model.
• the function handle class (mfh) has a new bounded non-linear least squares search (fminsearchbnd). This can be considered a beta version as it doesn‘t yet return error estimates.
• the ao class has 4 new convenient filtering methods: lowpass, highpass, bandpass and bandreject.
• there is a new ao built-in model which computes a set of notches in the frequency domain (ao_model_notch)
• the matrix class now supports element-wise power operations. For now it only supports for X = matrix.^scalar.

Changes to methods

• ao/polyfit now returns error estimates (assuming uncorrelated inputs)
• in ao/iplot the provenance info patches can now be disabled in the plist
• ao/setPlotinfo now accepts an empty array to allow the user to clear the plotinfo
• the built-in ao model retrieve_in_timespan has a new dryrun parameter which just reports on whether the request will result in any objects.
• mfh/fminsearch now returns error estimates if the original data model is input in the plist.
• timespan/plot has been improved to allow the boxes representing the timespans to be transparent so they can be overlaid on other data plots.
• ao/iplotyy has been updated to work properly with the plotinfo objects.

LTPDA Repository Interaction

This version of the toolbox has some new utilities for querying LTPDA repositories from within MATLAB.

• utils.repository.report dumps the records of a database to a file
• utils.repository.existObjectInDB checks if a given name exist in the database table objmeta.name. It is also possible to specify for AOs with time-series a time-span.

MANTIS Issues Resolved

Version 2.7.1 LTPDA Toolbox Software

Version 2.6.1 LTPDA Toolbox Software

©LTP Team