IDL (Interactive Data Language) is a commercial scientific computing environment that combines mathematics, advanced data visualization, scientific graphics, and a graphical user interface toolkit to analyze and visualize scientific data. IDL supports data in NetCDF format.

• Write a two-dimensional array of sample data and read data from this file.
• Write some variables with units attributes and coordinate dimensions and read data variables and attributes from this file.
• Write some four-dimensional variables using a record dimension and read from the variables from this file.