SIS

Sequential indicator simulation of categories 0..k, one indicator variogram per category.

fit method descriptor

fit(coords, categories, *, holes=None, proportions=None)

Takes the categories 0..k at coords. holes tag the samples for max_per_hole; samples sharing a location keep the first, with a warning naming their holes. Both may name columns of coords. proportions, shape (n, k) (an array or a Table such as combine_proportions returns), are local category proportions at the samples; simulate then needs them at the targets, and krigs each indicator minus its local proportion by simple kriging, so every node is drawn towards its own proportions.

from_parquet staticmethod

from_parquet(path)

Reads to_parquet output; raises InvalidInput on another class's file or a newer format.

simulate method descriptor

simulate(
    targets,
    *,
    n=100,
    seed=0,
    keep=None,
    blocks=None,
    proportions=None,
)

Summary of n realizations, each seeded from seed and its index; the (n, targets) realizations themselves only when keep. With blocks (a coarser BlockModel), each block takes the category filling most of its node volume, ties to the smallest, as in BlockModel.regularize; blocks as in SGS.simulate. proportions, shape (targets, k), are the local category proportions at the targets, when fit had them at the samples.

to_parquet method descriptor

to_parquet(path)

Writes arrays as Parquet columns and parameters as JSON in the file metadata; from_parquet reads it back.

used in

• local proportions
• sequential indicator simulation
• grades in simulated rock types