Time series smoothing filter

[aazuspan]

Add a wxee.TimeSeries.smooth_time method that applies pixel-wise temporal smoothing to a time series.

• Whittaker smoothing
  • General reference
  • Remote sensing reference
  • Reference implementation
• Savitzky Golay smoothing
  • General reference
  • Remote sensing reference
  • Reference implementation
• Moving window with variable size and reducers
  • Because the parameters are significantly different, this is implemented as a separate method wxee.TimeSeries.rolling_time rather than as a "type" of smooth_time.

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[aazuspan]

Fair enough. I'm going to close this as out of scope for now as I'm trying to focus wxee more on the core data access functionality and less on time series processing at the moment.

If anyone comes across this, the rolling_time method is available for basic smoothing of time series, and you may also be interested in this implementation of Savitzky-Golay smoothing.