NCTOOLBOX (a Common Data Model toolbox for Matlab)

[Rich Signell]

Gang,

For folks interested in working in Matlab with model output (or any
data in NetCDF, Grib1, Grib2, OPeNDAP data), check out NCTOOLBOX:

http://code.google.com/p/nctoolbox/

Like the preceding njTBX toolbox, it takes advantage of CF conventions
(if they exist) to allow easy and interoperable access to results from
different models. But unlike the njTBX package, which it replaces,
it's a one click install, and is under active development.

Attached is the result of "nam_wind_now" demo in the demos/contrib
directory, accessing the latest NAM 4km wind for the Gulf of Maine.

-Rich
--
Dr. Richard P. Signell   (508) 457-2229
USGS, 384 Woods Hole Rd.
Woods Hole, MA 02543-1598

[James T. Potemra]

Hi Rich:

Just wondering if this toolbox includes the libraries/code
to read and display irregular grids?

Jim

[Rich Signell]

Jim,

In demos/contrib there is a routine "test_cf_ugrid3.m" that reads
ADCIRC, SELFE and FVCOM model output via OPeNDAP and displays surface
elevation without any model specific code, taking advantage of the
draft UGRID conventions (http://bit.ly/ugrid_cf) for unstructured
grids.

But the CF convention parsing is all being done with Matlab code,
which is suboptimal -- we really want that done in Java, so other
NetCDF-java based apps can use it.

There is a version of NCTOOLBOX waiting in the wings that makes use of
a new NetCDF-Java class for UGRID, but this has been passed to Unidata
for incorporation in an upcoming release. This will simplify greatly
simplify working with UGRID compliant code in Matlab, making it nearly
as easy to work with unstructured grids as with structured grids.

-Rich

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