Convert a flat named list (C++ output) to a streamline or bundle

The input is the named list returned by ReadVTK(), ReadVTP(), or ReadFDS(), which has at minimum columns "X", "Y", "Z", "PointId", and "StreamlineId". Columns named in streamline_cols are treated as per-streamline attributes: one value is stored per streamline (taken from the first occurrence in each group rather than broadcast). All remaining extra columns are treated as per-point attributes.

Usage

flat_list_to_bundle(lst, streamline_cols = character(0L))

Arguments

lst

A named list with at least the columns "X", "Y", "Z", "PointId", and "StreamlineId".

streamline_cols

Character vector of column names to store as per-streamline data. Defaults to character(0).

Value

A streamline or bundle.

Details

Returns a streamline when the data contain exactly one streamline, otherwise a bundle.