Quality Control Charts in Python. Inspired by the R qcc package.
Tools:
- Reshape data table with value column and subgroup reference column (qcc_groups).
Charts for continuous variables:
- x-bar for subgroup means.
- R for subgroup ranges.
- s for subgroup variance.
- Individuals for single measurements.
- Moving range for single measurements.
Charts for attributes:
- p for proportion of nonconforming units.
- np for number of nonconforming units.
- c for nonconformities per unit.
- u for average nonconformities per unit.
Other charts:
- Operating characteristic.
- Process capability.
- Cusum.
- EWMA.
- Pareto.
- Multivariate control charts.
Additional features:
- Calibration data and subsequent new data.
- Nelson and Western Electric rules.
- Summary statistics.