matrix
for a pathway
objectget_network_matrix
creates the adjacency matrix representing the gene-gene interaction structure within a particular pathway
. Note that a
KEGG kgml file is downloaded and saved in the working directory.
# S4 method for pathway
get_network_matrix(object, directed = TRUE, method = "auto")
get_network_matrix
returns the modified pathway
object, where the slots adj
and sign
are altered according to the downloaded information in the KEGG kgml file.
A pathway
object identifying the pathway for which gene interaction infomation should be extracted. Here, KEGG IDs of format 'hsa00100' are used and information is downloaded from the KEGG database.
A logical
argument, stating whether the network matrix
should return directed (TRUE
) or undirected (FALSE
) links.
Download method to be used for downloading files, passed to via KEGGgraph::retrieveKGML
to utils::download.file
function. Currently supports 'auto'
(default), 'internal'
, 'wininet'
(Windows only), 'libcurl'
, 'wget'
and 'curl'
.
Stefanie Friedrichs, Patricia Burger, Juliane Manitz