D47crunch v2.1.0

Released on 2023-05-14

New feature

• D4xdata.plot_bulk_compositions() plots the dispersion of δ13C and δ18O values for each sample.

D47crunch v2.0.6

Released on 2023-05-13

Bugfix

• Eliminate some spurious debugging messages in _fullcovar()

D47crunch v2.0.5

Released on 2023-05-11

Changes

• Under the hood: constrained parameters in pooled standardization now get fully propagated variance and covariance, allowing for truly arbitrary constraints without having book-keeping problems further down the line.

D47crunch v2.0.4

Released on 2023-05-11

Changes

• Graphically improved D4xdata.plot_distribution_of_analyses()

Bugfix

• Fix D4xdata.standardize() when using weighted sessions

D47crunch v2.0.3

New feature

• D4xdata.covar_table() allows exporting the variance-covariance matrix or the correlation matrix for the Δ_4x values of unknwon samples.

Changes

• New hist keyword to D4xdata.plot_residuals(), which adds a histogram of residuals to the side of the plot.

D47crunch v2.0.2

Remove HTML tags in all docstrings

D47crunch v2.0.1

Fix silly mistake in readme.

D47crunch v2.0.0

New feature

• Support for Δ₄₈ standardization (cf section Process paired Δ₄₇ and Δ₄₈ values in the documentation).

Changes

• Extensive changes to the documentation, with new sections (Tutorial and How-to).
• Documentation is now built with pdoc instead of pdoc3.
• D47data.simulate() replaced by simulate_single_analysis() and virtual_data(), with additional functionality.
• New method: D4xdata.report()
• D4xdata.table_of_analyses(), D4xdata.table_of_sessions(), and D4xdata.table_of_samples() have a new argument output controlling what the method should return.
• SAMPLE_CONSTRAINING_WG_COMPOSITION is gone, replaced by D4xdata.Nominal_d13C_VPDB and D4xdata.Nominal_d18O_VPDB.
• lambda_17 is now replaced by LAMBDA_17 everywhere.
• Additional tests

Bugfixes

• Correct (or at least improve) computations of analytical repeatabilities in D47data.repeatabilities() and D47data.compute_r().

D47crunch v1.2.0

Changelog

• Fix computation of Δ47 repeatability in D47data.compute_r() (only affects reported statistics in D47data.summary(), not uncertainties computed in the pooled standardization method).
• New method: D47data.combine_samples()
• New method: D47data.plot_distribution_of_analyses()
• Added parameter constraints to D47data.standardize()
• Cosmetic changes to D47data.plot_residuals()
• Default behavior of D47data.split_samples() is now to split samples by session.

D47crunch v1.1.0

Changelog

• D47data.Nominal_D47 now uses I-CDES values, corresponding to 90 °C acid values, by default.
• New function: D47data.simulate() to simulate arbitrary datasets