Description

An R object that contains information on Gene Ontology Molecular Function terms. These terms are organised as a direct acyclic graph (DAG), which is further stored as an object of the class 'igraph' (see http://igraph.org/r/doc/aaa-igraph-package.html). This data is prepared based on http://www.geneontology.org/ontology/obo_format_1_2/gene_ontology.1_2.obo.

Usage

ig.GOMF <- dRDataLoader(RData = "ig.GOMF")

Value

an object of class "igraph". As a direct graph, it has attributes to vertices/nodes and edges:

• vertex attributes: "name" (i.e. "Term ID"), "term_id" (i.e. "Term ID"), "term_name" (i.e "Term Name") and "term_distance" (i.e. Term Distance: the distance to the root; always 0 for the root itself)
• edge attributes: "relation" (either 'is_a' or 'part_of')

References

Ashburner et al. (2000) Gene ontology: tool for the unification of biology. Nat Genet, 25:25-29.

Examples

ig.GOMF <- dRDataLoader(RData='ig.GOMF')

'ig.GOMF' (from https://github.com/hfang-bristol/RDataCentre/blob/master/dnet/1.0.7/ig.GOMF.RData?raw=true) has been loaded into the working environment (at 2018-01-19 12:37:07)
ig.GOMF

IGRAPH 5e8d995 DN-- 9933 12114 -- 
+ attr: name (v/c), term_id (v/c), term_name (v/c), term_distance
| (v/n), relation (e/c)
+ edges from 5e8d995 (vertex names):
 [1] GO:0000009->GO:0033164 GO:0000009->GO:0052824 GO:0000009->GO:0052917
 [4] GO:0000014->GO:1990599 GO:0000014->GO:1990601 GO:0000026->GO:0004377
 [7] GO:0000026->GO:0052918 GO:0000026->GO:0052926 GO:0000030->GO:0000009
[10] GO:0000030->GO:0000026 GO:0000030->GO:0000033 GO:0000030->GO:0004169
[13] GO:0000030->GO:0004376 GO:0000030->GO:0004582 GO:0000030->GO:0004584
[16] GO:0000030->GO:0016438 GO:0000030->GO:0019187 GO:0000030->GO:0047252
[19] GO:0000030->GO:0047264 GO:0000030->GO:0047267 GO:0000030->GO:0051751
+ ... omitted several edges