1.2.1

1.2.1

Features

• Cleaning up logging and changelogs

1.2.0

1.2.0

Features

• Fixed geotiff saving functionality
• Upgraded to .toml

1.1.0

1.1.0

Features

• Added a Dockerfile with some additional documentation
• Improved/updated the installation instructions

1.0.0

1.0.0 Python 3 release

At long last, pydem uses Python 3 instead of Python 2. The new version of pydem drops support for Python 2 entirely.

Enhancements

• ProcessManager:
  • Nearly a complete re-implementation
  • No longer depends on a file naming convension to process multiple elevation tiles
  • Now uses the zarr file format for intermediate computations
  • A single process oversees multiple workers, making it easy to stop or restart the processing
• DEMProcessor:
  • Now uses raw elevation files and conditions them internally without simply filling flats
  • Interpolates flat areas to allow them to drain appropriately
  • Drains pits along a path of minimum elevation
  • Removed in-file chunking capability
• Added basic unit tests (closer to integration tests)
• Migrated from traits to traitlets
• Migrated from gdal to rasterio

Pits, Flats, Arrays inputs, and bug fixes

Features

• Added fill_flats option in DEMProcessor.
  • This will interpolate slopes between large flat regions when possible
  • This solve the issue of large flat regions due to integer precision of DEM data
• Added drain_pits option in DEMProcessor
  • This will look for nearby pixels (up to a tolerance) for draining pits
  • The base algorithm only looks for directly adjacent pixels for draining, this extends this search window
  • This allows elevation files to be processed without pit filling beforehand
• Added ability to instantiate DEMProcessor with a numpy array
• Marginal optimization of slope/magnitude calculation

Bug Fixes

• Now using consistent datatypes for all numpy arrays
  • cython functions should now work consistently across different platforms
• removed numba dependency

Other

• Improved README file
  • Added documentation for the DEMProcessor options/attributes
  • Added reference to the scipy conference paper