Interval Groups for Discretized Functional Predictors

Creates non-overlapping interval groups within each functional block. This is useful when one wants region-level stability summaries instead of pointwise selection frequencies.

Usage

functional_interval_groups(x, width, step = width, overlap = FALSE)

Arguments

x

Any input accepted by as_functional_matrix().

width

Positive integer interval width within each block.

step

Step size between interval starts. Only non-overlapping intervals are supported by default.

overlap

Logical; should intervals be allowed to overlap? When TRUE, the result is returned as an overlapping group structure.

Value

Either an integer group vector with an interval_table attribute or an overlapping group structure of class fda_group_list.