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Hi Nuzhet, > Is there a Mathematica interface to netCDF? I would like to read and write > netCDF files within Mathematica. I haven't heard of such an interface, although I think Mathematica makes it relatively easy to provide such external interfaces, and the result would be useful. There is a package named FERRET that claims to provide a "Mathematica-like interface", but I doubt that is what you are looking for. In case you don't already know about it, though, here's a description taken from http://www.unidata.ucar.edu/packages/netcdf/utilities.html: FERRET is an interactive computer visualization and analysis environment designed to meet the needs of oceanographers and meteorologists analyzing large and complex gridded data sets. It is available by anonymous ftp from abyss.pmel.noaa.gov for a number of computer systems: SUN (Solaris and SUNOS), DECstation (Ultrix and OSF/1), SGI, VAX/VMS and Macintosh (limited support), and IBM RS-6000 (soon to be released). FERRET offers a Mathematica-like approach to analysis; new variables may be defined interactively as mathematical expressions involving data set variables. Calculations may be applied over arbitrarily shaped regions. Fully documented graphics are produced with a single command. Graphics styles included line plots, scatter plots, contour plots, color-filled contour plots, vector plots, wire frame plots, etc. Detailed controls over plot characteristics, page layout and overlays are provided. NetCDF is supported both as an input and an output format. Many excellent software packages have been developed recently for scientific visualization. The features that make FERRET distinctive among these packages are Mathematica-like flexibility, geophysical formatting (latitude/longitude/date), "intelligent" connection to its data base, special memory management for very large calculations, and symmetrical processing in 4 dimensions. Contact Steve Hankin, address@hidden, for more information. --Russ