http://www.wiki.mohid.com/index.php?action=history&feed=atom&title=MatLab_TideAnalyser 2026-04-05T00:43:52Z Revision history for this page on the wiki MediaWiki 1.28.0 http://www.wiki.mohid.com/index.php?title=MatLab_TideAnalyser&diff=471&oldid=prev 2008-12-03T10:27:15Z

<p>1 revision</p> <table class="diff diff-contentalign-left" data-mw="interface"> <tr style='vertical-align: top;' lang='en'> <td colspan='1' style="background-color: white; color:black; text-align: center;">← Older revision</td> <td colspan='1' style="background-color: white; color:black; text-align: center;">Revision as of 10:27, 3 December 2008</td> </tr><tr><td colspan='2' style='text-align: center;' lang='en'><div class="mw-diff-empty">(No difference)</div> </td></tr></table>

Guillaume http://www.wiki.mohid.com/index.php?title=MatLab_TideAnalyser&diff=470&oldid=prev 2008-01-11T11:52:44Z

<p></p> <p><b>New page</b></p><div>The [[MatLab]] program '''TideAnalyser''' analyses a water level matrix timeseries(i.e., a matrix i cells by j cells by t time) and outputs a harmonic analysis matrix.<br /> <br /> It is availiable through [[SourceSafe]] OtherTools database.<br /> <br /> [[Image:TideAnalyserAmp.jpg|200px|thumb|Sample Output from TideAnalyser: S2 Amplitude from MOHID, forced with FES2004]]<br /> [[Image:TideAnalyserPha.jpg|200px|thumb|Sample Output from TideAnalyser: S2 Phase from MOHID, forced with FES2004]]<br /> <br /> ==Description==<br /> The program TideAnalyser reads a MOHID [[HDF5]] and returns harmonic component analysis for the<br /> entire netcdf waterlevel matrix, writing jpg files to an output directory.<br /> <br /> '''Requirements'''<br /> <br /> It requires a MOHID [[HDF5]] file. <br /> If you have a netcdf file, you can change the code easily in a way that there is a variable named 'data' which has dimensions ixjxt.<br /> <br /> '''Data Input'''<br /> <br /> If called simply without arguments, it will ask you the data:<br /> <br /> - a MOHID [[HDF5]] file with water level data, <br /> <br /> - an output directory,<br /> <br /> You can specify the input manually by entering them in the following way:<br /> tideanalyser('file')<br /> <br /> '''Output'''<br /> <br /> The program will write an TA_data.mat file to the output directory that includes:<br /> <br /> - TA_data.mat: the amplitude and phase matrix which is has dimensions ixjxh, with the harmonic components as h.<br /> <br /> And it will write in the output directory:<br /> <br /> - JPG/PNG files: containing the amplitude and phase maps for each harmonic analysed.<br /> <br /> == Remarks ==<br /> <br /> '''Execution time'''<br /> <br /> The program takes 3hours to analyse a 250*436*736 matrix, mainly due to harmonic analysis on each cell using T_TIDE package.<br /> <br /> '''T_TIDE: Tide analysis'''<br /> <br /> A t_tide package has to be installed in order to use this script.<br /> <br /> The 'T_TIDE' package from Rich Pawlowicz, can be obtained [http://www2.ocgy.ubc.ca/~rich/#T_Tide here]. It is based on the classic FORTRAN tidal analysis packages written by Mike Foreman [http://www.pac.dfo-mpo.gc.ca/sci/osap/projects/tidpack/tidpack_e.htm) here].<br /> <br /> [[Category: Tools]]<br /> [[Category:Matlab]]</div>

192.168.20.177