rolling-computation

问题 I use a custom window function in pandas. This works fine for things like .mean() and .sum() . As I understand it other aggregations like .count() and .min() used to have problems but should be fixed. Currently .count() uses the internal roll_count function AFAICS. But I still don't get the expected results: import numpy as np import pandas as pd # Use largest most recent multiple of *modulo* past measurements: class ModuloIndexer(pd.api.indexers.BaseIndexer): def get_window_bounds(self, num

问题 I would like to compute a rolling Z-score for one of my columns in my dataframe: import pandas as pd values = [1,2,3,4,5] d1= {'vol': values} df= pd.DataFrame(d1) Is there a way of doing this similar to this: df['mean'] = df.rolling(2).mean() Maybe with: from scipy import stats stats.zscore(df) EDIT : Found this approach in a similar post: def zscore_func(x): return (x[-1] - x[:-1].mean())/x[:-1].std(ddof=0) df.rolling(window=3).apply(zscore_func) 回答1: window = 2 target_column = 'vol' roll =

问题 I am currently trying to update my statsmodels package in Conda to the developer version statsmodels v0.11.0dev0. As I am relatively new to Python, I am struggling heavily to understand different threads on how to update to the developer version. On https://www.statsmodels.org/dev/install.html a short hint on how to install the developer version is given, nevertheless I cannot follow. I have tried the pip install -e and python setup.py develop. In order to specifically update the statsmodel

问题 I am currently trying to update my statsmodels package in Conda to the developer version statsmodels v0.11.0dev0. As I am relatively new to Python, I am struggling heavily to understand different threads on how to update to the developer version. On https://www.statsmodels.org/dev/install.html a short hint on how to install the developer version is given, nevertheless I cannot follow. I have tried the pip install -e and python setup.py develop. In order to specifically update the statsmodel

来源： https://stackoverflow.com/questions/64799461/how-to-know-total-number-of-active-events-on-any-given-date-based-on-their-start

来源： https://stackoverflow.com/questions/51186922/moving-sum-of-a-certain-window-in-r

来源： https://stackoverflow.com/questions/56213863/numpy-version-of-rolling-maximum-in-pandas

来源： https://stackoverflow.com/questions/60990784/creating-a-rolling-sum-column-that-resets-once-it-reaches-a-threshold

来源： https://stackoverflow.com/questions/56872205/pandas-groupby-rolling-mean-median-with-dropping-missing-values

来源： https://stackoverflow.com/questions/56872205/pandas-groupby-rolling-mean-median-with-dropping-missing-values