I am using octave to extract the wave data present in netCDF file. I need to extract the data. I am using octave in windows.
You need to add the toolbox octcdf
http://modb.oce.ulg.ac.be/mediawiki/index.php/NetCDF_toolbox_for_Octave
Check first that octcdf is correctly installed. It you type
octave:1> ver
you should get something like
----------------------------------------------------------------------
GNU Octave Version 3.4.3
GNU Octave License: GNU General Public License
Operating System: Linux 3.0.0-24-generic #40-Ubuntu SMP Tue Jul 24 15:36:59 UTC 2012 i686
----------------------------------------------------------------------
Package Name | Version | Installation directory
--------------+---------+-----------------------
octcdf *| 1.1.4 | .../share/octave/packages/octcdf-1.1.4
If you do have octcdf insalled, read again the link I sent to learn the basics on how to read netcdf data
An escample for that dataset will be
nc=netcdf('wm_20110101.nc'.'r');
lon=nc{'lon'}(:);
lat=nc{'lat'}(:);
swh=nc{'swh}(:);
scatter(lon,lat,6,swh)
Regards
Andres
Dear Sir,
I am Chaitanya,............
I Just installed Octave and few octave packages in mac OS X 10.9.5.
I am also facing same problem with netcdf file accessing in Octave.
here are the version details.
octave:1> ver
----------------------------------------------------------------------
GNU Octave Version 3.8.2
GNU Octave License: GNU General Public License
Operating System: Darwin 13.4.0 Darwin Kernel Version 13.4.0: Wed Mar 18 16:20:14 PDT 2015; root:xnu-2422.115.14~1/RELEASE_X86_64 x86_64
----------------------------------------------------------------------
Package Name | Version | Installation directory
--------------+---------+-----------------------
ncarray | 1.0.3 | /opt/local/share/octave/packages/ncarray-1.0.3
netcdf | 1.0.7 | /opt/local/share/octave/packages/netcdf-1.0.7
octcdf | 1.1.8 | /opt/local/share/octave/packages/octcdf-1.1.8
-------------------------
even though octcdf is installed its is showing the following error.
------------------
octave:2> ncsss=netcdf('sss_cars_filled.nc','r')
error: 'netcdf' undefined near line 1 column 7
---------------------
can you please help me..........
with data.nc your dataset, the command should be
Hi,
think you should use netcdf_open and netcdf_getVar command
(1)check which variable are available
ncdisp('data.nc')
(2) Open the file
fid=netcdf_open('data.nc','NC_NOWRITE');
(3) Extract the variable
latn=netcdf_getVar(fid,1);
(4) close the file
ncdf_close(fid)
there are good explanation here
https://github.com/Alexander-Barth/octave-netcdf/wiki
Cheers,
JF
Dear Chaitanya Akurathi ,
don' forget to load the package, for instance:
>> pkg load netcdf
then octave will recognize the package and you can use it.
good luck,
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