foundryts.functions.skip_nonfinite

foundryts.functions.skip_nonfinite()

Returns a function that filters all points with non-finite values in a time series.

Non-finite values can be inf or NaN.

• Returns: A function that accepts a single time series and returns the filtered time series with only finite point values.
• Return type: (FunctionNode) -> FunctionNode

Dataframe schema

Examples

Copied!
1>>> series = F.points(
2...     (100, 100.0),
3...     (120, float("nan")),
4...     (130, 230.0),
5...     (166, float("inf")),
6...     (167, 366.0),
7...     (168, float("-inf")),
8...     name="series",
9... )
10>>> series.to_pandas()
11                      timestamp  value
120 1970-01-01 00:00:00.000000100  100.0
131 1970-01-01 00:00:00.000000120    NaN
142 1970-01-01 00:00:00.000000130  230.0
153 1970-01-01 00:00:00.000000166    inf
164 1970-01-01 00:00:00.000000167  366.0
175 1970-01-01 00:00:00.000000168   -inf

Copied!
1>>> finite_series = F.skip_nonfinite()(series)
2>>> finite_series.to_pandas()
3                      timestamp  value
40 1970-01-01 00:00:00.000000100  100.0
51 1970-01-01 00:00:00.000000130  230.0
62 1970-01-01 00:00:00.000000167  366.0