Function reference • stratigraphr

Stratigraphs

Construct and validate a graph representation of a stratigraphic sequence.

stratigraph(): Construct a stratigraphic graph

strat_connect(): Connect stratigraphic units

strat_is_mirror(): Are two relation vectors mirrored?

strat_is_valid(): Is an object a valid stratigraphic graph?

strg_prune(): Remove redundant relations from a stratigraph

Read and write

Functions for reading and writing stratigraphic and chronological data.

read_lst(): Read an LST file

write_oxcal(): Write CQL to a file

CQL

An R interface to the Chronological Query Language (CQL).

cql() as_cql(): Chronological Query Language (CQL)

cql_boundary() cql_sigma_boundary() cql_tau_boundary() cql_zero_boundary() cql_transition(): Describe a boundary constraint in CQL

cql_n() cql_lnn() cql_t() cql_top_hat() cql_u(): Describe distributions in CQL

cql_options(): Set OxCal options in CQL

cql_age() cql_axis() cql_c_combine() cql_c_simulate() cql_correl_matrix() cql_correlation() cql_covar_matrix() cql_curve() cql_delta_r() cql_difference() cql_end() cql_exp() cql_gap() cql_interval() cql_kde_model() cql_kde_plot() cql_label() cql_line() cql_mcmc_sample() cql_mix_curves() cql_number() cql_offset() cql_outlier() cql_outlier_model() cql_p() cql_pois() cql_prior() cql_probability() cql_r_combine() cql_r_simulate() cql_reservoir() cql_sample() cql_sapwood() cql_sapwood_model() cql_shift() cql_start() cql_after() cql_before() cql_combine() cql_first() cql_last() cql_order() cql_span() cql_sum(): Other CQL functions (unimplemented)

cql_phase(): Describe an unordered group in CQL

cql_r_date() cql_c_date() cql_r_f14c() cql_date(): Describe dates in CQL

cql_sequence() cql_d_sequence() cql_p_sequence() cql_u_sequence() cql_v_sequence(): Describe an ordered group in CQL

Datasets

Example data included with the package.

harris12: Stratigraphy from Harris Figure 12

shub1: Schematic stratigraphy of Shubayqa 1

shub1_radiocarbon: Radiocarbon dates from Shubayqa 1

Deprecated

Functions for working with radiocarbon data in a tidy framework can now be found in the c14 package and will be removed in a future version of stratigraph.

cal() print(<cal>): Calibrated radiocarbon dates

cal_metadata(): Extract metadata from a calibrated date

as_cal(): Convert an object to a cal object

as.CalDates.cal(): Convert cal objects to a rcarbon CalDates object

c14_calibrate(): Calibrate radiocarbon dates

c14_sum(): Sum radiocarbon dates with tidy syntax