Another Simple Example

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4.10 Another Simple Example

In this example, a simple data file is examined with ncdump, showing its dimensions, variables, and attributes as CDL.

Let's look at the dimensions, variables, and attributes from the netCDF file co2.nc:

ncdump -h co2.nc

netcdf co2 {
dimensions:
	T = 456 ;
variables:
	float T(T) ;
		T:units = "months since 1960-01-01" ;
	float co2(T) ;
		co2:long_name = "CO2 concentration by volume" ;
		co2:units = "1.0e-6" ;
		co2:_FillValue = -99.99f ;

// global attributes:
		:references = "Keeling_etal1996, Keeling_etal1995" ;

An example of a variable: co2, representing averaged concentrations.
An example of a dimension: T, representing a time axis.
An example of a variable attribute: units, associated with the co2 variable.
An example of a file attribute: references, which applies to the whole file.

2010 Unidata NetCDF Workshop > The Two NetCDF Data Models