names of edges in graph classes
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Paul Shannon ★ 1.1k
@paul-shannon-578
Last seen 7.2 years ago
I notice that edges appear to be named in two different ways: > edgeNames (g) [1:2] [1] "1~2" "1~3" > names (edgeData (g)) [1:2] [1] "1|2" "1|3" Does this different choice for separator character -- tilde in one case, vertical bar in the other -- convey some meaning it would behoove me to understand? Or is it perhaps an accidental difference? A drawback to the current approach is that edgeNames (e.g., "1~2") cannot be used to index into edgeData: > edgeData (g) [["1|2"]] # this works $edgeType [1] "cluster" $category [1] 1 > edgeData (g) [["1~2"]] # this doesn't NULL Thanks, - Paul
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@nishant-gopalakrishnan-3253
Last seen 7.2 years ago
Hi Paul, I am not sure why the edges are named in two different ways. The "| " character is reserved as an edge separator and node names cannot contain "|". It looks like you are right that they should have had a consistent naming schema. Nishant On 01/04/2011 06:13 PM, Paul Shannon wrote: > I notice that edges appear to be named in two different ways: > > >> edgeNames (g) [1:2] >> > [1] "1~2" "1~3" > > >> names (edgeData (g)) [1:2] >> > [1] "1|2" "1|3" > > Does this different choice for separator character -- tilde in one case, vertical bar in the other -- convey some meaning it would behoove me to understand? Or is it perhaps an accidental difference? > > A drawback to the current approach is that edgeNames (e.g., "1~2") cannot be used to index into edgeData: > > >> edgeData (g) [["1|2"]] # this works >> > $edgeType > [1] "cluster" > $category > [1] 1 > > >> edgeData (g) [["1~2"]] # this doesn't >> > NULL > > Thanks, > > - Paul > _______________________________________________ > Bioconductor mailing list > Bioconductor at r-project.org > https://stat.ethz.ch/mailman/listinfo/bioconductor > Search the archives: http://news.gmane.org/gmane.science.biology.informatics.conductor >
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