On Wed, Nov 11, 2009 at 7:31 AM, John [H2O] <washa...@gmail.com> wrote:
>
> Hello, I'm trying to write a function to create a 'vanilla' NetCDF file to
> which I can add data.
>
> So far I have created the following, which is designed to set up a netcdf
> file for the addition of global or at least lat/lon datasets. My question
> has to do with attribute setting. Is it valid to do what I'm doing below
> "nco.attribute = attributevalue" or do you have to use the setattr function
> as outlined in some tutorials?
>
> Thanks!
>
> def default_netcdf(nco_filename,
> lon0=-179.5,lat0=-89.5,
> nx=720,ny=360,
> dx=0.5,dy=0.5):
> """ add default attributes and dimensions to the nc file """
> nco = NetCDFFile(nco_filename,'w')
> nco.author = "Some One"
> nco.createdate = dt.datetime.now().ctime()
> nco.contact = "some....@python.com"
> nco.Conventions = "CF-1.4"
>
> nco.createDimension('lon',nx)
> nco.createDimension('lat',ny)
> nco.createVariable('lat','d',('lat',))
> nco.createVariable('lon','d',('lon',))
> lon = np.arange(lon0,lon0+(nx*dx),dx)
> lat = np.arange(lat0,lat0+(ny*dy),dy)
> nco.variables['lat'][:] = lat
> nco.variables['lon'][:] = lon
> nco.createVariable('data','d',('lon','lat'))
>
> return nco
That should work fine for settings attributes. Are you having a
problem? If so, can you paste the actual traceback?
Ryan
--
Ryan May
Graduate Research Assistant
School of Meteorology
University of Oklahoma
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