[BioC] Problem with sp.between

[Seth Falcon]

Hi Adrien,

Thanks for sending in the report.

On 24 Nov 2005, adrien.jamain at imperial.ac.uk wrote:
> I have a very strange problem with sp.between for some graphs.  It
> runs for a while, then crashes RGui, and returns a textbox saying:
> 'The instruction at "0x0000002c" referenced memory at
> "0x0000002c". The memory could not be read.'
>
> The strange thing is that it happens only for *some* graphs, but for
> all nodes in those graphs.
>
> Has anyone experienced anything similar?  SessionInfo and a code
> snippet (to show you that I'm not doing anything fancy...) are
> below.

The snip that you sent is useful, but what we really need, in
addition, is a (hopefully small) example graph object that produces
the error (or a way to generate the graph object).

Can you post one on a public website or ftp server or mail me
privately and I can give you instructions for our ftp server (I'd
rather avoid large attachements in email if possible).


>> raw.center.nel
> A graphNEL graph with undirected edges
> Number of Nodes = 2013 
> Number of Edges = 4775 
>
>> nodes(raw.center.nel)[2]
> [1] "1415673_at"
>
>> adj(raw.center.nel, "1415673_at")
> $"1415673_at"
> [1] "1455238_at"   "1418467_at"   "1428583_at"   "1422558_at"
> "1422153_a_at"
> [6] "1450863_a_at" "1452830_s_at" "1434028_at"   "1415822_at"
> "1428892_at"  
>
>> sp.between(raw.center.nel, "1415673_at", "1455238_at")
>
> that's where it explodes...

Well, if adj is to be believed one would sure expect an answer from
sp.between and not an explosion :-)

+ seth