| File Information |
| Description |
The waveform suite is designed to allow easy data retrieval from a variety of sources and to make basic waveform research quick and easy. It is a toolset that allows the creation of more sophisticated programs without having to be concerned with all details. Features include:
* History feature tracks changes to your waveforms
* Plotting tools for waveforms
* Waveforms work for any regularly sampled data stream
* Mathematical functions make manipulating easier: +, -, /, .*, .^
* Standard manipulations: filter, crop, subset, subset, stack, normalize, automatic gain control, demean, detrend, taper, etc.
* Statistics: max, min, mean, median, etc.
* Waveform operations: hilbert transform, integration and differentiation
* Operates N-dimensional waveforms (in most cases without requiring loops)
* Object architecture provides a stable base for writing more complex programs
Data can be imported from Antelope databases (via the BRTT Antelope toolbox), Winston databases, SAC files, SEISAN, .mat files, or your own homegrown file format. With minimal coding, most any homegrown MATLAB format can take advantage of waveform architecture. The core suite consists of a scnlobject class, a datasource class, and the waveform class.
Two basic additional utility classes come with the waveform toolbox: filterobject and spectralobject. Filterobject allows easy filtering. Spectralobject allows easy manipulation of parameters used to create spectrograms.
The waveform suite:
* makes playing with data easier by automating the tedious aspects of data manipulation
* makes programs more stable by ensuring proper data typing
* makes code more portable by reading multiple formats and functioning on multiple systems
* makes troubleshooting faster by providing more detailed messages and warnings
Additional information can be found from the online examples and help files at:
http://kiska.giseis.alaska.edu/Input/celso/matlabweb/waveform_suite/waveform.html
The Waveform Suite and related codes can also be discussed at:
http://groups.google.com/group/gismotools
As always, Comments are welcome, as are reviews and bug reports. Thanks! |
| Required Products |
Signal Processing Toolbox
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| MATLAB release |
MATLAB 7.1.0 (R14SP3)
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| Other requirements |
Antelope Toolbox (for Antelope databases), JAVA libraries for accessing a winston wave server. MATLAB exchange File ID:11368 is required to do log-scaled spectrograms. Signal processing toolbox required for spectralobject and filtfilt. |
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| Updates |
| 17 Apr 2009 |
README file has been updated (4/17), located in @waveform/
It is also available to view online from the download page:
http://www.giseis.alaska.edu/input/celso/matlabweb/waveform_suite/download.html |
| 02 Sep 2009 |
Mostly, many fixes and modifications to how SAC files are treated. Data that is derivable from waveform is no longer duplicated in user fields. waveform/private sac-related m-files were updated and renamed. GISMO revision 136 |
| 19 Oct 2009 |
no software update at this time, only updating info about my AGU poster session (S11B-1704) |
| 16 Feb 2010 |
Improved: speed, error handling, NaN support, help text; Added log specgram plots , cumtrapz integration; Upgraded NxM waveform (./,.*,-,+) NxM numeric (see help); Removed: outdated user doc outdated, lookupunits(antelope dependent) |
| 17 Feb 2010 |
updated the waveform/readme.txt to reflect the great many changes that occurred in r206. |
| 18 Feb 2010 |
fixed issue where saved waveforms were not successfully loaded. made history a field (instead of being stored in misc_fields). |
| 13 Mar 2010 |
removed dependence upon statistics toolbox, (fixes mean/median/std/var issue), fixed where demean turns off history, overhauled specgram & specgram2 to allow multiple plots with additional options (see help), updated uispecgram. |
| 02 Apr 2010 |
Improved waveform's handling of multi-dimensional cell dates,
added a waveform/legend function, added "builtin" resample method, fixed a datasource/getfilename issue, and fixed a cell vs string problem with load_seisan. |
| 27 Apr 2010 |
Corrected an issue where the waveform constructor might not be able to parse dates. |
| 03 May 2010 |
updated the "Other requirements" to reflect spectralobject's and filterobject's dependence upon the hanning.m and butter.m from the signal processing toolbox |
| 03 Jan 2011 |
r258 includes fixes to dates, history, extract (eliminating possible 1-extra datapoint at end of timeseries), and an error generated when creating a specgram from a single waveform. |
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