| 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, the IRIS-DMC, 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 7.10 (2010a)
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| Other requirements |
Access to Antelope databases, Winston Wave-Servers, and the IRIS-DMC archive all require additional libraries (see docs). MATLAB exchange File ID:11368, for 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. |
| 06 Feb 2012 |
Variety of bug fixes and improvements (see @waveform/readme). Details of changes are available at the GISMO development site, http://code.google.com/p/gismotools/ |
| 06 Feb 2012 |
This version also can access waveforms from the IRIS-DMC, using the IRIS-WS java library. More information is available from: http://www.iris.edu/manuals/javawslibrary/matlab/ |
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