Analysis

Boreholes

cumulative_thickness(data[, top, bottom])
find_top_sand(lith, top, bottom, ...)	Find the top of sand depth in a borehole described in NEN5104 format.
layer_top(data, column, value)
top_of_sand(boreholes[, ids, min_sand_frac, ...])	Find the top of sand depth in a borehole described in NEN5104 format.

Cpts

interpret_cpt.calc_ic(qc, rf)	Calculate non-normalized IC values (I_SBT in Robertson 2010).
interpret_cpt.calc_lithology(ic, qc, rf)

Grainsize samples

grainsize.calculate_bhrgt_grainsize_percentiles(...)	Calculate the grain size percentiles (e.g. D10, D50, D90) for each sample in the provided DataFrame.
grainsize.calculate_bhrgt_grainsize_fractions(...)	Calculate fractions of fines, sand and gravel for each sample in the provided DataFrame.

Combine

combine.add_voxelmodel_variable(collection, ...)

Add a information from a variable of a VoxelModel instance as a column to the data of a BoreholeCollection or CptCollection instance.