Version 4.4.0 of the netCDF Operators (NCO) has been released. NCO is an Open Source package that consists of a dozen standalone, command-line programs that take netCDF files as input, then operate (e.g., derive new data, average, print, hyperslab, manipulate metadata) and output the results to screen or files in text, binary, or netCDF formats.
The NCO project is coordinated by Professor Charlie Zender of the Department of Earth System Science, University of California, Irvine. More information about the project, along with binary and source downloads, are available on the SourceForge project page.
From the release message:
This release focuses on stability and speed.
It also addresses previous omissions so that full path names are
accepted by all appropriate options, such as the ncwa weights and
masks (-w and -m), and ncks auxiliary coordinates (-X).
See below for bugfixes include ncra and ncrcat use-cases involving
strides with superfluous files and/or multi-record output (MRO).
Other significant new features include major improvements to
conversion of HDF4, HDF5, and netCDF4 files to netCDF3 and netCDF4
files. Most of this work is an offshoot of writing an NCO and
CFchecker-based solution to the problem of checking CF-compliance
for of datasets in HDF4, HDF5, and netCDF4 formats. The solution
is a script called ncdismember that now works well with most
NASA stewarded datasets I've thrown at it.
We postponed the name-change of ncra and ncwa to ncrs and ncws,
respectively, until the next version for stability.
Work on NCO 4.4.1 is underway, focused on stability and speed.
There will be more netCDF4 mop-up (-X and --cnk) and, possibly,
improved HDF4 support, and cache manipulation for chunking.
Additional details are available in the ChangeLog.
