nccreatewrite

Creates the NetCDF file directly, and these NetCDF files are readbale in GrADS. Get rid of writing the long commands everytime to create

Function:

One can create a NetCDF file with the predefined MATLAB

function using nccreate and ncwrite. This function is a

combination of these two predefined functions. One can use this

to save the time and get rid of writing the same commands for

storing multi variables in a nc file.

Syntax:

nccreatewrite('sample_file.nc','variable',{'lon','lat','lev'},randi(20,20,30,5))

Inputs:

First input should be the name of the nc file in which you want

to store the data.

Second input should be the name of the variable in which you

want to store the specific variable.

Third argument should be in braces (not structure) which must

contains the number of variables as that of the size of the

data you want to store.

ex: If you want to store 'lat' whose dimensions is 5*1, then

third argument should be {'lat'}

The above is becasue of MATLAB also stores the variable

dimensions seprately, not in the variable list.

You can see this when you use ncdisp to see the listed

variables in nc file.

Fourth argument should be the data you want to write in nc

file.

Fifth argument is an optional argument, and if provided, it should

be the attributes of the variable.

Example:

        random_data = normrnd(3,10,[20,30,5])+273;
        filename='sample.nc';
        delete(filename)
        lon_att.standard_name='longitude';
        lon_att.long_name='longitude';
        lon_att.units='degrees_east';
        lon_att.axis='X';
        nccreatewrite(filename,'lon',{'lon'},[65:84],lon_att)

        lat_att.standard_name='latitude';
        lat_att.long_name='latitude';
        lat_att.units='degrees_north';
        lat_att.axis='Y';
        nccreatewrite(filename,'lat',{'lat'},[1:30],lat_att)

        lev_att.long_name='generic';
        lev_att.units='level';
        lev_att.axis='Z';
        nccreatewrite(filename,'lev',{'lev'},[1:5],lev_att)
        nccreatewrite(filename,'TC',{'lon','lat','lev'},random_data)
        ncdisp(filename)

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