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CHANGELOG.md

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Changelog

0.0.2

Date - 09/16/2020

Release Tag - pd.0.0.2

Release Status - Current head of branch master

Update to use datacommons Python API 1.4.2, which adds batching to the get_stat_all function used by build_time_series_dataframe and build_multivariate_dataframe.

0.0.1

Date - 08/25/2020

Release Tag - pd.0.0.1

Release Status - Current head of branch master

Added pandas wrapper functions.

  • build_time_series constructs a pd.Series for a given StatisticalVariable and Place, where the time series are indexed by date.
  • build_time_series_dataframe constructs a pd.DataFrame for a given StatisticalVariable and a set of Places. The DataFrame will have Places as the index and dates as the columns.
  • build_multivariate_dataframe constructs a pd.DataFrame for a set of StatisticalVariables and a set of Places. The DataFrame will have Places as index and StatisticalVariables as the columns. The values are the most recent values for the chosen StatVarObservation options.

For multi-place functions, when a StatisticalVariable has multiple StatVarObservation options, Data Commons chooses a set of StatVarObservation options that covers the most places. This ensures that the data fetched for a StatisticalVariable is comparable across places. When there is a tie, we select the StatVarObservation options set with the latest date data is available for any place.