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• yhouradd, yhoursub, yhourmul, yhourdiv: Multi-year hourly arithmetic

• ECA operators: wrong result if missing value is not the default missing value (-9e33)
• ml2pl: added support for GRIB2 parameter names
• replace: removed debug output

• Added single precision support: streamWriteVarF, streamWriteVarSliceF
• Added support for ZAXIS_DEPTH_BELOW_LAND units "mm", "cm", "dm" and "m"

Changed from old pycdf to more recent scipy.io.netcdf for returning numpy arrays (suggested by Alastair McKinstry).

See cdo.{rb,py}

Both versions now work with the win32 version of CDO and interfaces have converged a bit more.

See cdo.{rb,py} for installation instructions.

Updated libraries:

• netcdf-4.2
• hdf5-1.8.8
• grib_api-1.9.16
• proj4-4.8.0

The default unix installation now includes grib_api.

• setgridtype: added parameter lonlat to convert curvilinear to regular lon/lat grids
• remapcon: added env REMAP_AREA_MIN, to set the minimum area fraction

• timcovar: covariance over time
• fldcovar: covariance in grid space

• splitsel: added support for constant fields [Bug #1701]
• combination of selection commands (e.g. selmon -selyear) do not terminate, if no result found [Bug #1640]

The scripting language bindings for Ruby have been enlarged to Python! Please have a look at cdo.{rb,py} for installation instructions and some examples.

For reading all unit tests, please register yourself and have a look at source:trunk/cdo/contrib/python/test/test_cdo.py for Python and source:trunk/cdo/contrib/ruby/test/test_cdo.rb for Ruby.

This is the first release of cdo.rb, a Ruby module to call CDO.

Installation¶

cdo.rb is released as a ruby gem, Ruby's own package format. Install cdo.rb with

gem install cdo

Documentation¶

Please have a look at the automatic documentation from rubygem: http://rubydoc.info/gems/cdo/frames

Examples¶

CDO's operators are implemented as module methods:

Cdo.info(:in => "input.nc")

Input and output stream arguments are handled special with hash keys :in and :out. Same is true for the other options of CDO like "-f" or "-P":

Cdo.topo(:out => "topography.grb")
Cdo.copy(:in => "topography.grb",:out => "topography.nc4",:options => "-f nc4")

Operator options can be set as standard method arguments:

Cdo.stdatm(0,10,20,50,100,200,500,1000,:out => "standard_atm.nc",:options => "-f nc")

More example can be found in the unit tests: source:trunk/cdo/contrib/ruby/test/test_cdo.rb.

• Variable input parameter for ECA operators: eca_cdd, eca_cwd, eca_rr1, eca_sdii

• deflate compression with netCDF4 doesn't work (option: -z zip)
• sellonlatbox: correct lon bounds if necessary
• ifthen, ifthenelse: uses only the first time step of the first input file
• module Monarith (monadd, monsub, monmul, mondiv): wrong result for 3D variables

• Added support for level type ZAXIS_TOA, ZAXIS_SEA_BOTTOM, ZAXIS_ATMOSPHERE

• deflate compression with netCDF4 doesn't work