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changelog.md

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1.3.8

  • Automate python ast analysis with bandit on travis
  • The installed python extension is built without rpath
  • The numpy minimum requirement is handled in setup.py
  • The python installation layout can be configured via cmake e.g. -DPYTHON_INSTALL_LAYOUT=deb

1.3.7

  • Makefiles can turn off version detection from git from env or via args

1.3.6

  • Applications no longer spuriously ignore arguments
  • All assertClose calls in tests have non-zero epsilon

1.3.5

  • make install respects DESTDIR, also for python files

1.3.4

  • Reading a slice in gather mode is significantly faster
  • Use ftello when available to support large files on systems where long is 32-bit
  • The python extension is changed to use C++; a C++ compiler is now required, not just optional, when building the python extension
  • Many internal and infrastructure improvements
  • The python library is built with setuptools - still integrated with cmake. Users building from source can still do cmake && make
  • Git tag is now authority on version numbers, as opposed to the version string recorded in the cmake file.
  • General building and infrastructure improvements

1.3.3

  • Infrastructure fixes

1.3.2

  • Add test for segy-cath
  • Fix memory double-free error in subtr functions

1.3.1

  • Fix a typo in segyio-crop --version
  • Some building improvements

1.3.0

  • segyio is now meant to be used as proper versions, not trunk checkouts. changelogs from now on will be written when new versions are released, not on a monthly basis.
  • Minor typo fixes in segyio-cath help
  • Applications now come with man pages
  • header modes handle negative indexing
  • header.update handle any key-value iterable
  • New application: segyio-catr for printing trace headers
  • New application: segyio-catb for printing the binary header
  • New application: segyio-crop for copying sub cubes

2017.06

  • seismic unix-style aliases are available for python in the segyio.su namespace
  • segyio has learned how to calculate the rotation of the cube (segy_rotation_cw and segyio.tools.rotation)
  • The python header objects behave more as dicts as expected
  • The new program segyio-cath is added, a cat-like program that concatenate text headers.
  • Infrastructure improvements
  • segyio for python is available via pypi (pip)
  • segyio is now meant to be consumed with binary downloads of versions, but with a rapid release cycle. Releases within a major release will be backwards compatible
  • Shared linking of the python extension is considered deprecated on Windows.

2017.05

  • Requirements for the shape of the right hand side of f.trace[:] = expressions are relaxed and accepts more inputs
  • C interface slightly cleaned up for C99 compliance
  • C library can reason on arbitrary header words for offsets, not just 37

2017.04

  • Examples in the readme
  • Delay recording time (t0) is interpreted as milliseconds, not microseconds
  • Some minor optimisations
  • segy_mmap is more exception safe
  • The applications warn if mmap fails
  • Support for static analysis with cppcheck
  • The statoil/pycmake repo is used for python integration in cmake
  • Minor milli/microsecond bugfixes in mex bindings
  • tools.wrap added for printing textual headers to screen or file

2017.03

  • Float conversions (ibm <-> native) has been optimised and is much faster
  • segy_binheader_size returns signed int like its friends
  • sample_interval steps are now floats
  • Multiple internal bug fixes
  • Some buffer leaks are plugged
  • segyio has learned to deal with files without good geometry. If strict = False is passed to segyio.open, and a file is without well-sorted inlines/crosslines, open will return a file handle, but with geometry-dependent modes disabled
  • file.samples returns a list of samples, not number of samples
  • Readme has been improved.
  • trace[int] is more robust w.r.t. inputs
  • A new mode has been added; gather. gather depends on a good geometry, and its getitem [il, xl, slice(offsets)] returns all offsets for an inline/crossline intersection

2017.02

  • segyio has learned to deal with large files (>4G) on more platforms
  • segyio can read quickly attributes (trace header words) over the full file
  • python can tell the fast and slow directions apart
  • Reading depth slices is much faster
  • tools.collect for gathering read samples into a single numpy ndarray
  • tools.cube for easily reading a full cube
  • tools.native for fast third-party segy-to-native float conversion
  • File opening in binary mode is now enforced
  • Data types have been overhauled (prefer signed integers)
  • Enumerations have been SEGY prefixed to reduce collisions
  • Building shared libs can be switched on/off on cmake invocation
  • Makefiles and CI overhauls

2017.01

  • Matlab has learned about prestack files
  • Reading traces in matlab no longer fails when not reading the whole file
  • Matlab argument keys have been renamed

2016.11

  • Fixed some condtions where a failed write would corrupt trace data
  • Fixed a memory leak bug
  • VERSION string added to python
  • Experimental memory-mapped file support
  • Line-oriented C functions are offset aware
  • Python offset property exposes offset numbers, not just count
  • Support for pre-stack files, with new subindexing syntax, line[n, offset]
  • Improved python repl (shell, read-eval-print-loop) support
  • The widgets have color- and layout selectors

2016.10

  • Matlab tests can optionally be turned off
  • The application Segyviewer is embeddable and provided by the segyview sub library
  • libcwrap has been replaced fully by the python C api
  • OS X and experimental Windows support
  • A new sub mode for traces, raw, for eager reading of trace data