CDO

New Features and Fixes:

• logging commands to external file or memory (python and ruby examples)
• support for upcoming CDO release 1.7.1
• [ruby] new object oriented interface
  • requires ruby-2.x
  • is thread safe
  • is the new default interface when calling

    require 'cdo'

• [ruby] old module interface is still available by using

  require 'cdo_lib'

• fix unicode-related bug for python2 (thanks to Sebastian Illing)

• added support for netCDF Scalar Coordinate Variables
• added support for hybrid sigma pressure coordinates following the CF convention
• added option --percentile to select different percentile methods
  Available methods: nrank, nist, numpy, numpy_lower, numpy_higher, numpy_nearest
• distgrid: added support for curvilinear grids
• collgrid: added support for curvilinear grids

• remapycon: First order conservative remapping (new implementation of remapcon)
• genycon: Generate 1st order conservative remap weights (new implementation of gencon)
• setmisstonn: Set missing value to nearest neightbor
• setmisstodis: Set missing value to the distance-weighted average of the nearest neighbors
• ap2pl: Interpolate 3D variables on hybrid sigma height coordinates to pressure levels
• vertstd1: Vertical standard deviation [Divisor is (n-1)]
• vertvar1: Vertical variance [Divisor is (n-1)]
• seasvar1: Seasonal variance [Divisor is (n-1)]
• seasstd1: Seasonal standard deviation [Divisor is (n-1)]
• yseasvar1: Multi-year seasonally variance [Divisor is (n-1)]
• yseasstd1: Multi-year seasonally standard deviation [Divisor is (n-1)]

• remapnn, remapdis: replaced scrip search by kdtree (optimization)
• vertvar, vertstd: changed to weighted var/std if layer bounds are available

• cdo -t table_file does not complain if table_file is a directory [Bug #5891]
• expr: operators return 0 for arithmetics on constants [Bug #5875]
• env. CDO_TIMESTAT_DATE does not work [Bug #5758]
• splityear*: support for constant fields is missing [Bug #5759]
• yseaspctl: check of verification date failed [Bug #5810]
• Converting rotated lat-lon netcdf to/from grib: flip sign of the angle of rotation [Bug #5870]

• select: added parameter date, startdate, enddate
• expr: added support for operator ?:,&&,||
• option --reduce_dim: reduce dimension (Timstat, Fldstat)

• after: ECHAM standard post processor
• aexpr: Evaluate expressions and append results
• aexprf: Evaluate expression script and append results
• selzaxisname: Select z-axes by name
• genlevelbounds: Generate level bounds

• ydrunpctl: does not work in combination with ydrunmin/ydrunmax
• Ensstat: added support for different missing values
• seltimestep: abort if none of the selected timesteps are found

• select, delete: added wildcard support for parameter name
• expr: added support for logical operators <, >, <=, >=, !=, ==, <=>

• splityearmon: Split in years and months
• yseasadd: Add multi-year seasonal time series
• yseassub: Subtract multi-year seasonal time series
• yseasmul: Multiply multi-year seasonal time series
• yseasdiv: Divide multi-year seasonal time series

• vertmean, vertavg: changed to weighted means if layer bounds are available
• setpartabp, setpartabn: added optional parameter convert to convert the units.
  Units are not converted anymore if this parameter is not set!
• TimSTAT, Timpctl, TimselSTAT, Timselpctl, SeasSTAT, Seaspctl:
  The output time stamp of all operators from the above modules are changed from the last to the middle contributing timestep.
  Use the environment variable CDO_TIMESTAT_DATE=last to set the output time stamp to the last contributing timestep.
• eof, eof3d: use area weights instead of no weights
  Use the environment variable CDO_WEIGHT_MODE=off to switch back to the non weighted version

• gradsdes: grib index file is empty (introduced in 1.6.7)
• grib2 output: segfaults when writing grib2 files [Bug #5351]
• remapnn: Segmentation fault for extrapolation of regular 2D source grids [Bug #5448]

• outputtab: table output

• option -t table: segmentation fault if parameter table entry longname is missing
• merge: check number of timesteps [Bug #5338]
• seasmean: sets all time_bnds to the same values [Bug #5329]
• histcount: doesn't recognize missing values
• filesdes: doesn't work for GRIB2 files [Bug #5307]

• distgrid: distribute horizonal grid
• collgrid: collect horizontal grid

• cat: added support for option -O (overwrite existing output file)
• remaplaf: changed calculation of weights from SCRIP to YAC

• gridarea: added support for concave grid cells
• gradsdes: added support for option 365_day_calendar
• import_binary: option 365_day_calendar does not work
• select: wrong result when select only one timestep

• Option --history: Do not append to netCDF "history" global attribute
• Option --netcdf_hdr_pad <nbr>: Pad netCDF output header with nbr bytes

• setpartabn: set parameter table by name
• setpartabp: set parameter table by parameter ID
• sealevelpressure: sea level pressure

• Sinfo: changed format of grid and zaxis section
• Filter: disable zero-padding
• diff: print number of different values
• Ymonstat: sorts output by month of year

• eof3d: set sum of weights to 1
• eofcoeff: remove scaling with grid cell area weights
• eofcoeff3d: remove scaling with grid cell area weights

• remapbil, remapbic, remapdis, remapnn: performance optimization for regular 2D source grids
• gradsdes: added support for GRIB files >2GB
• eca_csu: added number of csu periods with more than 5days per time period
• eca_cfd: added number of cfd periods with more than 5days per time period
• expr: select variables by name

• gradsdes: added parameter map_version and removed specific operators gradsdes1 and gradsdes2

• gradsdes: changed LCC to LCCR in PDEF definition [Bug #4344]
• cat: "Segmentation fault" if the output file already exist [Bug #4291]
• delete: parameter level does not work [Bug #4216]

• select: added support for key >timestep_of_year<
• mastrfu: added missing value support
• splitmon: added optional parameter to set the format string for the month

• selyear: wrong result for negative years [Bug #3836]
• eca_gsl: start date of growing season is wrong if the length of growing season is zero

• support of blanks in filenames and parameter

• gradsdes: added support for netCDF files
• Info: add chunking information of netcdf files (only with verbose output) [Feature #3489]
• select: added support for key >hour<

• fldcor: check missing value of 2. input file
• enscrps: wrong result since CDO version 1.5.6 [Bug #3403]
• selmon: month not found for negative years [Bug #3439]
• shifttime: wrong result for negative hours and days [Bug #3440]
• inttime: removes last time step [Bug #3611]