rfwtools.extractor.down_sample.down_sample_extractor
- rfwtools.extractor.down_sample.down_sample_extractor(example, signals, step_size=16, query=None)[source]
Standardize and down sample several signals and concatenate into a single row.
- Parameters:
example (
Example) – The example on which to operatesignals (
List[str]) – An explicit list of the example’s columns to be down sampled (e.g., “1_GMES”).step_size (
int) – This controls the down sampling behavior. Only include the first sample out of every ‘step_size’ samplesquery (
Optional[str]) – Argument passed to the ex.event_df to filter data prior to feature extraction, e.g. “Time <= 0”.
- Return type:
DataFrame- Returns:
A DataFrame with a single row containing the the down sampled and concatenated signals.