Man pages for marberts/ppd
Prices Production and Development
| calendar_period | Calendar periods |
| complete_periods | Complete periods |
| complete_quarters | Complete quarters/years |
| generalized_mean | Generalized mean |
| geomean | Weighted geometric/harmonic mean |
| period_ends | End points for calendar periods |
| pias_class | Make a PIAS for elementary aggregates in a classification |
| pias_matrix | Make a PIAS matrix |
| ppd | Prices Production and Development |
| rs_pair | Make sales pairs |
| rs_unpair | Un-make sales pairs |
| rs_x | Shiller's X matrix |
| rs_z | Shiller's Z matrix |
| rvar | Robust variance matrix for linear regressions |
| sample_index | Sample index data |
| selector_matrix | Selector matrix |
| weighted_mode | Weighted mode |
| year_month | Year month/year quarter/year |
