scikit-hep / hist

Histogramming for analysis powered by boost-histogram
https://hist.readthedocs.io
BSD 3-Clause "New" or "Revised" License
127 stars 26 forks source link

Sum of weights (squared) in WeightedMean histograms not filled properly #562

Open olbessid opened 6 months ago

olbessid commented 6 months ago

I am filling histograms with storage type WeightedMean. I then want to retrieve the sum of weights and more particularly the sum of weights squared bin by bin. But I find that calling both these properties just returns the number of histogram entries. I am using python 3.8. Attaching a minimalistic example to illustrate the issue. I wasn't able to attach the notebook itself, so I made a screenshot and also collected the code in a pdf. Screenshot from 2024-03-22 13-33-58 notebook snippet.pdf