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Use nc_create to create a file. Then use nc_def_dim to define each shared dimension. The data variables are then specified with nc_def_var. Any attributes are added with nc_put_att. Finally, call nc_enddef to tell the library that you are done defining the metadata, and ready to start writing the data.
After all data are written to the file, call nc_close to ensure that all buffers are flushed, and any resources associated with the open file are returned to the operating system.
For a very simple example, See simple_xy in C.
For a typical sequence of calls to the C versions of these functions, see See Creating a NetCDF Dataset.
nc_create | create a new netCDF file
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nc_def_dim | define a dimension
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nc_def_var | define a variable
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nc_put_att_ type | write attributes
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nc_enddef | leave define mode
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nc_put_vara_ type | write arrays of data
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nc_close | close a file
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