[datatable-help] cedta decided 'igraph' wasn't data.table aware

[Matthew Dowle]

Hi,

Oh dear. On first glance, you are having a painful time with 
data.table!   But if you have verbose=TRUE then this seems ok.  I think 
of 'verbose' more like 'trace'.  There aren't different levels of 
verbosity, yet, although that has been suggested before and is on the 
list to do.  So internal tracing messages, notes, progress etc is all 
mixed in to one 'verbose=TRUE' level at the moment.    I very rarely use 
verbose=TRUE.  I just switch it on when debugging.    You and others are 
right to switch it on and use it for tuning,  that is the idea,  but 
it's too verbose at the moment as you've found.

Anyway, cedta did the right thing here, since 'igraph' indeed is not 
data.table aware.  Setting verbose=FALSE should make the trace message 
go away.

More info about cedta on the single result returned by "[data.table] 
cedta" :

http://stackoverflow.com/questions/10527072/using-data-table-package-inside-my-own-package/10529888#10529888

(have just reread that and it's still correct).

Matthew


On 23.04.2013 22:55, Sam Steingold wrote:
> Hi, what does this mean?
>
> --8<---------------cut here---------------start------------->8---
>> graph <- graph.data.frame(merged[!v,], vertices=ve, directed=FALSE)
> cedta decided 'igraph' wasn't data.table aware
> cedta decided 'igraph' wasn't data.table aware
> cedta decided 'igraph' wasn't data.table aware
> cedta decided 'igraph' wasn't data.table aware
> cedta decided 'igraph' wasn't data.table aware
> --8<---------------cut here---------------end--------------->8---
>
> `merged' and `ve' are `data.table' objects, and thus `data.frame'
> objects too.
> the igraph function graph.data.frame accepts data.frame.
> other than the messages (controlled by datatable.verbose), the code
> appears to work.
>
> Bill Dunlap kindly explained that
>>> cedta ("Calling Environment is Data.Table Aware")
>>> is a private function in package:data.table
>
> could you please offer more detail?
> what doe the message mean?
>
> Thanks.