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===============================================================================
Installation Instructions
================================================================================

To install SPy, unpack the source distribution archive, `cd` into the directory
created when the archive is unpacked (e.g., "spectral.x.y"), and type
the following::

    python setup.py install

================================================================================
SPy 0.6 Release Notes
================================================================================
Release date: 2011.01.17

- New Features:

  - Support for parsing & loading spectra from the ASTER Spectral Library.
  
  - Ability to save ENVI spectral library files.

  - :meth:`spectral.kmeans` will accept a :exc:`KeyboardInterrupt` exception
    (i.e., CTRL-C) and return the results as of the previous iteration.

  - Documention is now online via Sphinx.

- Changes

  - Major changes to module/sub-module layout. Biggest change is that the top-
    level module is now "spectral" instead of "Spectra" (capitalization). Many
    functions/classes have moved between files and sub-modules but that should
    be transparent to most users since the most obvious names are automatically
    imported into the top-level module namespace.

  - Additional ENVI data file extensions are now searched (.bil, .bsq, .bip,)

  - Changed default colors in :obj:`spectral.spyColors`, which is the default
    color palette used by :meth:`spectral.viewIndexed`.

  - :meth:`spectral.transformImage` is now the means to apply a linear transform
    to an image (rather than creating a :class:`spectral.TransformedImage`
    directly) because it handles both :class:`spectral.SpyFile` and
    :class:`numpy.ndarray` objects.

  - 64-bit floats are now used for covariance matrices.

  - Changed SPECTRAL_DATA path delimiter from semi-colon to colon.
    
- Bug fixes

  - Fixed a bug preventing successful reading of ENVI header files where an
    equal ("=") symbol appears in a parameter value.

  - Fixed bug where a ColorScale might return an incorrect color if the scale
    contained negative values.

  - :meth:`cluster` would fail if only 2 clusters were requested.
  
  - :meth:`kmeans` was reporting an incorrect number of pixels reassigned
    between iterations (did not affect final convergence).

  - :meth:`logDeterminant` was crashing when receiving negative values.
  
  - Missing a potential byte swap in :meth:`spectral.io.bilfileBilFile.readDatum`.
Source: README.txt, updated 2011-01-18