Observation Collection Manipulation

Once you have created an ObservationCollection, whether from simulated or real data, you will often need to access, modify, and process the observations. This section covers the various operations you can perform on observation collections:

• Extracting information: Learn how to retrieve observation data, times, residuals, and metadata

• Modifying collections: Set weights, define reference points, and compute residuals

• Using dependent variables: Add and retrieve auxiliary quantities calculated alongside observations

• Processing observations: Filter, split, and remove observation sets

These tools allow you to prepare your observation data for estimation, analyze results, and ensure data quality.