Use nc_put_vars for strided writes for netcdf-c >= 4.6.2 (issue #1222).
_Unsigned="false" should be same as not having _Unsigned set (issue #1232).
_Unsigned now must be set to "true" or "True" for variable to be interpreted
as unsigned, instead of just having _Unsigned be set (to anything).
pypi wheels built with netcdf-c 4.9.1.
version 1.6.2 (tag v1.6.2rel)
Added netCDF4.__has_set_alignment__ property to help identify if the
underlying netcdf4 supports setting the HDF5 alignment.
Slicing multi-dimensional variables with an all False boolean index array
now returns an empty numpy array (instead of raising an exception - issue #1197).
Behavior now consistent with numpy slicing.
fix problem with compiling using netcdf-c < 4.9.0 (issue #1209)
pypi wheels build with netcdf-c 4.9.0.
version 1.6.1 (tag v1.6.1rel)
add Dataset methods has__filter (where =zstd,blosc,bzip2,szip)
to check for availability of extra compression filters.
Add support for nc_set_alignment and nc_get_alignment to control alignment
of data within HDF5 files.
version 1.6.0 (tag v1.6.0rel)
add support for new quantization functionality in netcdf-c 4.9.0 via "signficant_digits"
and "quantize_mode" kwargs in Dataset.createVariable. Default quantization_mode is "BitGroom",
but alternate methods "BitRound" and GranularBitRound" also supported.
opening a Dataset in append mode (mode = 'a' or 'r+') creates a Dataset
if one does not already exist (similar to python open builtin). Issue #1144.
Added a mode='x' option (as in python open) which is the same as mode='w' with
clobber=False.
allow createVariable to accept either Dimension instances or Dimension
names in "dimensions" tuple kwarg (issue #1145).
remove all vestiges of python 2 in _netCDF4.pyx and set cython language_level
directive to 3 in setup.py.
add 'compression' kwarg to createVariable to enable new compression
functionality in netcdf-c 4.9.0. 'None','zlib','szip','zstd','bzip2'
'blosc_lz','blosc_lz4','blosc_lz4hc','blosc_zlib' and 'blosc_zstd'
are currently supported. 'blosc_shuffle',
'szip_mask' and 'szip_pixels_per_block' kwargs also added.
compression='zlib' is equivalent to (the now deprecated) zlib=True.
If the environment variable NETCDF_PLUGIN_DIR is set to point to the
directory with the compression plugin lib__nc* files, then the compression plugins will
be installed within the package and be automatically available (the binary
wheels have this). Otherwise, the environment variable HDF5_PLUGIN_PATH
needs to be set at runtime to point to plugins in order to use the new compression
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Updates the requirements on netcdf4 to permit the latest version.
Changelog
Sourced from netcdf4's changelog.
... (truncated)
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