Changelog
hamstr 0.8.0
- Hierarchical structure of sections changed so that child sections are offset from parents. This will eventually break backwards compatibility, for now if the old argument “K” is used, “K_fine” is calculated from “K”. The change improves the age models by reducing the influence of the positions of the breaks in the low resolution layers.
hamstr 0.7.2
- 1 sigma quantiles now included in summaries
- calibration function can handle offset uncertainties (e.g. reservoir age uncertainty)
- Hamstr logo added to Readme
hamstr 0.7.0
- some little used arguments moved to hamstr_control and stan_sampler_args to simplify main function
- default K structure changed to powers of 2
hamstr 0.6.0
- Ability added to model age-heterogeneity from bioturbation and its effect on age models.
- Default plot changed to put diagnostic plots at the bottom.
hamstr 0.5.2
Minor change to the way acc_shape is adjusted to account for the number of hierarchical levels. acc_shape is now adjusted to control the shape of the gamma distributed alpha parameters, not the total variance. The difference is minor.
New methods to extract and plot accumulation rates
hamstr 0.5.1
New default hierarchical structure K based on default resolution of 1 cm (up to 1000 cm) and number of levels approximately equal to number of new child sections per parent per level.
hamstr 0.5.0
- Significant update to behaviour when using hierarchical structure. The acc_shape parameter is now adjusted to control the total variance in the alpha parameters when there are multiple levels
- Default mem_mean and mem_strength values updated to 0.5 and 10 to match updated defaults from bacon 2.5.1 onwards