Release Highlights from 200001–201406 (versions 1.1.47–4.4.4)

  • NCO 4.4.4: netCDF'ize non-compliant element names; -x var tolerates non-existence; --rad orphan dimensions; ncwa --mask_condition bugfix
  • NCO 4.4.3: Faster DAP access to strided data; Group broadcasting for ensembles;
  • NCO 4.4.2: CF cell_methods support; Bugfixes for nces memory, LLVM/clang builds, -X, RX's with groups, --cnk_dmn;
  • NCO 4.4.1: Group support for -X and --cnk_dmn; Chunk and uncompress simultaneously; ncra/ncea/ncrcat bugfix
  • NCO 4.4.0: Optimizations; ncdismember awesomeness; ncks --hdn; ncks --fix_rec_dmn=all; ncks autoconversion; ncrename output path; ncra --mro bugfix; ncra/ncrcat stride bugfix; Better chunking; Group support for ncwa -w -m;
  • NCO 4.3.9: New operator nces; Full XML/NcML compliance; ncatted NaN bugfix;
  • NCO 4.3.8: ncatted group features;
  • NCO 4.3.7: HDF4 support; XML/NcML data support; Multiple record dimension support with ncpdq, ncecat --mrd; ncrename group features; ncap2 file bugfix; ncecat ID bugfix; ncwa -b bugfix;
  • NCO 4.3.6: --flt default; ncpdq/ncecat leave only one record dimension; ncwa/nces bugfixes; ncdismember
  • NCO 4.3.5: nces/ncra/ncrcat groups with -g -G --unn;
    • nces/ncra/ncwa float→double coercion with --dbl; ncwa -d bugfix
  • NCO 4.3.4: HDF unpacking --hdf_upk; ncpdq unpacking bugfix; CDL printing legibility;
  • NCO 4.3.3: CDL printing ncks --cdl; ncrename -g; ncwa groups with -g -G --unn;
  • NCO 4.3.2: ncflint/ncpdq groups with -g -G --unn; ncks -X bugfix;
  • NCO 4.3.1: ncbo symmetry, group broadcasting; ncbo -G --unn; ncecat RAG; ncbo CF bugfix; ncatted bugfix; Windows DAP;
  • NCO 4.3.0: ncbo -g groups; ncatted NULs; ncap2 rounding; ncks metadata bugfix
  • NCO 4.2.6: Record appending with ncra/ncrcat --rec_apn; ncflint --fix_rec_crd; RX's in full paths; Correct dimension/coordinate scopes; ncks MM3 workaround;
  • NCO 4.2.5: ncks --mk_rec_dmn bugfix; ncks subsetting bugfix
  • NCO 4.2.4: Group wildcards; Group anchoring and recursion; Intersection/union modes; ncrename global att. handling; nces bugfix; ncra bugfix
  • NCO 4.2.3: Group Path Editing (GPE); ncecat bugfix
  • NCO 4.2.2: ncks, ncecat support groups; --hdr_pad all operators; ncks prints underscores; fixes to --[mk/fix]_rec_dmn; ncpdq fix; ncwa on Windows;
  • NCO 4.2.1: --ram_all for diskless files; --no_tmp_fl to bypass temporary files; Negative indices for hyperslabs; ncpdq unpacks coordinate variables; ncra/ncrcat SSC/MRO options; ncra/ncrcat rebase bounds;
  • NCO 4.2.0: ncecat "fixes" auxiliary coordinates and bounds; ncks uses nc__open, format NC_INT with %i; ncra -y ttl fix; ncrcat UDUnits fix; ncwa and ncap2 limited NaN support; Microsoft Visual Studio support;
  • NCO 4.1.0: MD5 digests; ncap2 sorts & maps; ncks MM3 workaround; ncrename/ncatted chmods; ncatted NaN support
  • NCO 4.0.9: Fix over-zealous ncap2 packing; Fix nces -y ttl; Fix/improve ncap2 print, array(); Warn when appending variables of suspicious record length; Warn when NC_MAX_ATTRS exceeded
  • NCO 4.0.8: Support HPSS; Workaround netCDF NOFILL bug (upgrade recommended); Support CF bounds; CF noleap not no_leap; Fix ncatted overwrite-mode; Fix NC_BYTE printing
  • NCO 4.0.7: Fix degenerate hyperslab bug (upgrade recommended)
  • NCO 4.0.6: clang-compliance; Fix ncra YYYYMMDD-date bug; Extract all associated coordinates; Tighten ncbo warnings; ncpdq warns when _FillValue outside packing range
  • NCO 4.0.5: Fix ncks hyperslabbing bug; Fix ncra CF "coordinate" bug
  • NCO 4.0.4: Chunking in all operators; preserve deflation; ncks print formatting; Fix ncrename bug; Do not pack coordinate variables
  • NCO 4.0.3: Fix configure for ncap2, netCDF4, UDUnits2, netCDF-DAP; Fix ncbo bug under AIX xlC; Fix ncra bug for some CF-compliant dates.
  • NCO 4.0.2: Consistent deflation, chunking with netCDF4_classic; Fix ncap2 RAM vars, 1-D arrays; Fix ncatted appending NULs.
  • NCO 4.0.1: Easily create/remove record dimensions with ncks --mk_rec_dmn, --fix_rec_dmn;
  • NCO 4.0.0: Bilinear interpolation, GSL fitting; Chunking improvements; Better support CF calendar and coordinate attributes
  • NCO 3.9.9: netCDF4 chunking and NC_STRING support; GSL statistics, interpolation functions; UDUnits2 time-since support; ncrcat re-basing
  • NCO 3.9.8: ncap2 supports sort(), array(); better DAP/libnetcdf and UDUnits2 builds; GSL distribution/RNG functions
  • NCO 3.9.7: Improve GSL-build support; ncap2 threading improvements; ncks --no_dmn_var_nm printing
  • NCO 3.9.6: Fix OpenMP MSA bug (upgrade highly recommended); Memory management to improve threading; ncatted workaround for netCDF4 _FillValue; disable OpenMP with netCDF4/HDF; no math on type NC_CHAR; ncap2 documentation, better missing value propagation, #include files, GSL math functions
  • NCO 3.9.5: Multi-slabbing (MSA) and -X everywhere; ncecat -M; netCDF4-enabled builds on Cygwin; ncap2 builds on Solaris
  • NCO 3.9.4: File consanguinity; ncks: CF auxiliary coords, LZ stats; ncap2: masks, index arrays, print attributes, OpenMP, atan2(), pow()
  • NCO 3.9.3: SWAMP release; ncecat -u; wget URLs; GCC 4.2; ncap2 OpenMP
  • NCO 3.9.2: _FillValue supplants missing_value; UDUnits2 support; ncap2 type-conversion support and printing; netCDF4 configure fixes; Change licenses to GPL3 and FDL1.2
  • NCO 3.9.1: Support lossless netCDF4/HDF deflation; Improve Intel compiler support; ncap2 for/while loops; various and sundry build fixes
  • NCO 3.9.0: Support netCDF4 types (ubyte, ushort, uint, int64, and uint64); Control ncks metadata copying; Fix ncbo packed valued bug (upgrade recommended); Improve IRIX 6.5 support
  • NCO 3.2.0: More forgiving exclusion list (-x -v var_nm) handling; Fix rmssdn normalization; Support Mac OS X on Intel; Documentation bugfixes
  • NCO 3.1.9: ncap2 in RPM packages; Quieter output; AIX configure supports ncap2; Update to DAP for netCDF 3.6.2; Fix nc[erw]a for coordinate min/max/ttl; ncecat allows files to differ in record dimension size
  • NCO 3.1.8: Support _FillValue with compile-time switch; Debian package synchronized, includes ncap2
  • NCO 3.1.7: ncap2 “double-parsing”, array initialization, supercedes ncap
  • NCO 3.1.6: Support stride in all hyperslabbing operators; change more WARNINGs to INFOs
  • NCO 3.1.5: New ncap2 array and hyperslab features; change some WARNINGs to INFOs, add Pathscale and update PGI and Intel compiler support
  • NCO 3.1.4: Fix ncbo memory problem; report timer results
  • NCO 3.1.3: ncap2 automatically propagates attributes to new/derived variables; NCO handles record variables with zero records; support CF coordinates convention; ncwa -b retains degenerate dimensions; build fixes for Cray T3E, Solaris, Cygwin.
  • NCO 3.1.2: ncap2 control structures (conditionals, loops, etc.); keep non-processed data packed in output file; binary operators ncbo and ncflint work when only one variable has missing_value attribute; change ncra and nces to always average coordinate variables
  • NCO 3.1.1: NCO builds (again) with C++ compilers; ncap2 development code; server-side extensions
  • NCO 3.1.0: MPI operators are bug-free; fix ./configure for MPI and netCDF4; MRV algorithm speeds up ncwa 5—10 times; ncap random number generator rnd_nbr()
  • NCO 3.0.3: Eliminate all critical read regions (accelerates all SMP operators); builds with netCDF4 alpha; read NETCDF4_CLASSIC (i.e., HDF) files automatically; write NETCDF4 files on request; benchmark results quantify parallelism.
  • NCO 3.0.2: Fewer critical read regions; all known memory leaks plugged; better Intel compiler support; SFTP protocol support; FTP protocol supports .netrc-based passwords; better model grid-property-awareness (e.g., lat_bnds); ncatted ncks, ncrename support metadata header padding with --hdr; ncbo supports heterogeneous variable ordering; ncatted bugfix
  • NCO 3.0.1: benchmarks; ncks printing tweaks; memory cleanup; ncap double-parse speedup and exponentiation bugfix; thread operators by default
  • NCO 3.0.0: New ncks -P print switch; ncap optimizations; -Z option supports 64-bit offsets (requires netCDF 3.6); NEC SX build improvements; support GCC 3.4.X; nco_put_vara() overloads in libnco_c++
  • NCO 2.9.9: ncpdq packs/unpacks entire files; ncbo is threaded
  • NCO 2.9.8: ncpdq released; ncwa --msk_sng consolidated mask switch; C99 compiler required
  • NCO 2.9.7: Read input file lists from stdin; write nco_input_file_list attributes; add nco_put_att<int,short,long> functions to libnco_c++; large file support (LFS); write nco_openmp_thread_number attribute
  • NCO 2.9.6: Support -o fl_out syntax; 64-bit ABI for x86_64; Debian builds libnco_c++
  • NCO 2.9.5: ncflint handles missing_value data better, is commutative when weights are equal
  • NCO 2.9.4: ncecat works on pure scalar files; change to cvs.sf.net; AIX GCC builds
  • NCO 2.9.3: ncra and nces now work correctly when missing_value equals zero or any intermediate sums
  • NCO 2.9.2: ncap S/V, S%V, and S^V operations fixed (S = scalar, V = variable)
  • NCO 2.9.1: ncwa works again on packed NC_FLOAT data (broke when?)
  • NCO 2.9.0: Complete ncap modulo operator (V%S) and generic exponentiation (V^S), scalar divided by variable (S/V); workaround stack memory problem with GCC extensions; fix make check
  • NCO 2.8.8: --enable-[optimize/debug]-custom options for GCC work again (broke in 2.8.6)
  • NCO 2.8.7: ncap packing works again (broke in 2.8.4); Cygwin builds work again
  • NCO 2.8.6: AIX and IRIX builds work again; custom GCC builds with -Werror
  • NCO 2.8.5: Solaris make install works; ncap changes attribute values correctly; Support DODS 3.4+, deprecate 3.3-; add --enable-[optimize/debug]-custom options to ./configure
  • NCO 2.8.4: Index-based hyperslabs work again (broke in 2.7.3, upgrade highly recommended); ncap peak memory usage reduced still more; support for AMD Opteron x86_64 architecture
  • NCO 2.8.3: Fix big ncap memory leak; fix regressions; remove scary packing warnings
  • NCO 2.8.2: ncbo handles distinct missing_values correctly; improve error diagnostics
  • NCO 2.8.1: “Variable wildcarding”—extended regular expressions in -v var,... lists—support in all operators
  • NCO 2.8.0: New “binary” operator ncbo, obsoletes ncdiff; Debian integration
  • NCO 2.7.4: Autotools build support for AIX; fix UDUnits confusion with floating point hyperslab specifications
  • NCO 2.7.3: Support UDUnits (and some CF) conventions, e.g., ncks -d wvl "1 picometer","1 furlong" -d time,"2001-03-19 06:00:0.0","2001-03-19 18:00:0.0"
  • NCO 2.7.2: Printing (ncks -H) plays well with multi-slabbing
  • NCO 2.7.1: (Packaged) Fallback to B. Sittler's getopt() for long option support; store fixed, packed variables correctly with ncap.
  • NCO 2.7.0: Support for GNU/POSIX long options; ncks introduces multi-slabbing (= multiple hyperslabs) capability
  • NCO 2.6.6: Fix and document ncrename attribute renaming; add type conversion functions to ncap
  • NCO 2.6.5: Cray, Sun build improvements
  • NCO 2.6.4: Mac OS X, NEC, SGI build improvements
  • NCO 2.6.3: Mac OS X builds work seamlessly; documentation fixed
  • NCO 2.6.2: Major improvements in autotools support; ncap supports user-defined dimensions
  • NCO 2.6.1: Minor fix to unpacking support
  • NCO 2.6.0: All arithmetic operators (ncap, ncdiff, nces, ncflint, ncra) support unpacking
  • NCO 2.5.6: Handle missing_value correctly for integer variables in ncra, merge autoconf build
  • NCO 2.5.5: Handle files without existing global “History” attribute correctly
  • NCO 2.5.4: Add support NEC-SX support; update Cray support; small build changes
  • NCO 2.5.3: Fix native builds under MS Windows with Cygwin ncap; hint to ncwa
  • NCO 2.5.2: Add math functions to ncap; hint to ncwa
  • NCO 2.5.1: ncatted deletes all attributes of att_var when att_nm not specified
  • NCO 2.5.0: man(1) pages from Debian distribution
  • NCO 2.4.6: Free (speech) sort routines
  • NCO 2.4.5: Arithmetic speedups
  • NCO 2.4.4: 64-bit AIX builds
  • NCO 2.4.3: Handle non-standard “History” attributes
  • NCO 2.4.2: ncap supports nesting files with #include
  • NCO 2.4.0: ncks supports writing native binary output with -b switch
  • NCO 2.3.1: ncap builds on all Unices
  • NCO 2.3.0: Library redesign
  • NCO 2.2.4: ncap fully supports packing and unpacking variables
  • NCO 2.2.3: ncap supports manually unpacking variables stored with scale_factor and add_offset
  • NCO 2.2.2: fix rare ncwa crash with weights
  • NCO 2.2.1: fix ncap divide and fmodf bugs
  • NCO 2.2.0: (RPM available) 20020203: ncap public debut (has division error, please upgrade)
  • NCO 2.1.3: ncap implements LHS casting
  • NCO 2.1.2: C++ API to netcdf; libnco_c++ open for business
  • NCO 2.1.0: ncap full lexer/parser operational
  • NCO 2.0.3: small fixes to 2.0.0 (e.g., ncks printing)
  • NCO 2.0.2: Add packing/unpacking capabilities based on scale_factor and add_offset convention
  • NCO 2.0.1: Add user-configurable multi-threaded capability to arithmetic-intensive operators ncwa, nces, and ncra
  • NCO 2.0.0: (RPM available) 20010507: Switched all internal calls to netCDF 3.x API
  • NCO 1.2.2: 20010211: Allow weights with ncwa in min/max/ttl operations; easier building with HDF4. ncrename can now work on specific variables rather than whole file. ncks has -q option for cleaner printing
  • NCO 1.2.1: 20000828: Added type-conversion of integers to floating point before arithmetic; fixed broken -v option
  • NCO 1.2: 20000730: Added non-linear operations to ncra/nces and ncwa: min,max,total,rms,rmssdn,sqrt. Added DODS compliance.
  • NCO 1.1.48: 20000515: Potentially serious bugfix to ncdiff, recommend upgrade
  • NCO 1.1.47: 20000510: Improved ncra and ncrcat to allow lazier specifications of input files