seglist
makes a seglist object from a list of integer
vectors of raw vertex ids. As a convenience if a vector of numeric ids are
passed these are assumed to specify a neuron with 1 segment.
as.seglist.neuron
will extract the seglist from a neuron,
optionally extracting all subtrees (all=TRUE
) and (in this case)
flattening the list into a single hierarchy when flatten=TRUE
.
n.b. when all=TRUE
but flatten=FALSE
the result will
always be a list of seglist
objects (even if the neuron has
only one subtree i.e. is fully connected).
as.seglist.igraph
will convert a fully connected acyclic
ngraph or igraph object into a seglist consisting of exactly one subtree.
seglist(...)as.seglist(x, ...)
# S3 method for neuron
as.seglist(x, all = FALSE, flatten = FALSE, ...)
# S3 method for igraph
as.seglist(x, origin = NULL, Verbose = FALSE, ...)
A list
with additional class seglist
.
a list
with one entry for each unbranched segment.
for seglist
integer vectors to convert to a seglist
object passed to be converted to seglist
Whether to include segments from all subtrees
When all=TRUE
flatten the lists of lists into a
one-level list.
The origin of the tree (see details)
Whether to print progress updates to console (default FALSE)
see neuron
for further information about seglists.
If the graph vertices have vid
attributes, typically defining
the original vertex ids of a graph that was then decomposed into subgraphs,
then the origin is assumed to refer to one of these vids not a raw vertex
id of the current graph. The returned seglist will also contain these
original vertex ids.
The head of the first segment in the seglist will be the origin.
neuron
ngraph,igraph