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<TITLE>Read Global Topographi Data in Matlab</TITLE>
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<P><SPAN LANG="en-us"><FONT FACE="Arial">Hi, </FONT></SPAN>
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<P><SPAN LANG="en-us"><FONT FACE="Arial">I have recently submitted a pack to Matlab File Exchange. The description of the package is cited below. I think this is very relevant to our oceanography and your sea-mat site will be happy to make a link to the package at </FONT></SPAN><A HREF="http://www.mathworks.com/matlabcentral/fileexchange/loadFile.do?objectId=19758&objectType=file"><SPAN LANG="en-us"><U><FONT COLOR="#0000FF" FACE="Arial">http://www.mathworks.com/matlabcentral/fileexchange/loadFile.do?objectId=19758&objectType=file</FONT></U></SPAN></A><SPAN LANG="en-us"><FONT FACE="Arial"> </FONT></SPAN></P>
<P><SPAN LANG="en-us"><FONT FACE="Arial">Thanks!</FONT></SPAN>
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<P><SPAN LANG="en-us"><FONT FACE="Arial">Zhigang Xu</FONT></SPAN>
<BR><SPAN LANG="en-us"><FONT SIZE=1 FACE="Arial"> </FONT></SPAN>
<BR><SPAN LANG="en-us"><FONT SIZE=1 FACE="Arial">Ph.D. Research Scientist</FONT></SPAN><SPAN LANG="fr-ca"></SPAN>
<BR><SPAN LANG="fr-ca"><FONT SIZE=1 FACE="Arial">Maurice Lamontagne Institute </FONT></SPAN>
<BR><SPAN LANG="en-us"><FONT SIZE=1 FACE="Arial">Fisheries and Oceans Canada </FONT></SPAN>
<BR><SPAN LANG="en-us"><FONT SIZE=1 FACE="Arial">850 route de la Mer </FONT></SPAN>
<BR><SPAN LANG="en-us"><FONT SIZE=1 FACE="Arial">P.O. Box 1000, Mont-Joli, Quebec </FONT></SPAN>
<BR><SPAN LANG="en-us"><FONT SIZE=1 FACE="Arial">Canada G5H 3Z4</FONT></SPAN>
<BR><SPAN LANG="en-us"><FONT SIZE=1 FACE="Arial">Tel. 418-775-0776</FONT></SPAN>
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<P><SPAN LANG="en-us"><FONT FACE="Arial">Four Matlab functions to extract the data from two global topographic data base, ETOPO2v2 and GEOBEC.<BR>
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Four Matlab functions are provided to extract the data from two global topographic data base, ETOPO2v2 and GEOBEC. Functions, read_etopo2v2g_f4_nc_v*.m, extract the data from the netcdf file<BR>
ETOPO2v2g_f4.nc which is available from </FONT></SPAN><A HREF="http://www.ngdc.noaa.gov/mgg/global/relief/ETOPO2/ETOPO2v2-2006/ETOPO2v2g/netCDF/"><SPAN LANG="en-us"><U><FONT COLOR="#0000FF" FACE="Arial">http://www.ngdc.noaa.gov/mgg/global/relief/ETOPO2/ETOPO2v2-2006/ETOPO2v2g/netCDF/</FONT></U></SPAN></A><SPAN LANG="en-us"><FONT FACE="Arial">. The other functions, read_GridOne_v*.m, extract the data from GridOne.grd available from </FONT></SPAN><A HREF="http://www.bodc.ac.uk/data/online_delivery/gebco/"><SPAN LANG="en-us"><U><FONT COLOR="#0000FF" FACE="Arial">http://www.bodc.ac.uk/data/online_delivery/gebco/</FONT></U></SPAN></A><SPAN LANG="en-us"><FONT FACE="Arial">. You need to put the downloaded files in your matlab path. You will also need a netcdf reader, developed by Paul Spencer and available from the matlab central file exchanger. For your convenience, I have included it in this package (renamed as netcdf_PaulSpencer, since I have had another netcdf function already). The outputs both functions are [LON LAT HH]. You may wish to have a quick look at the data by matlab command contour(LON(1:60:end), LAT(1:60:end), HH(1:60:end, 1:60:end)). Have fun! </FONT></SPAN></P>
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