gs_quant.timeseries.analysis.count¶
- count(x)[source]¶
Count observations in series
- Parameters:
x (
Series) – time series- Return type:
Series- Returns:
number of observations
Usage
Count the number of valid observations in a series:
\(R_t = R_{t-1} + 1\)
if \(X_t\) is not NaN, and
\(R_t = R_{t-1} + 0\)
if \(X_t\) is NaN
Examples
Count observations in series:
>>> series = generate_series(100) >>> count = count(series)
See also
sum()