get.sid.list {rpubchem} | R Documentation |
Each unique compound is associated with a number of substances. Given a CID it is possible to determine the associated substance ID's.
get.sid.list(cid, quiet=TRUE, from.file=FALSE)
cid |
A vector of one or more compound ID's |
quiet |
If FALSE , output is verbose |
from.file |
If TRUE then the first argument is considered
to be the name of a file containing the XML data. If FALSE
the first argument must be a sequence of compound ID's and the data
will be downloaded from the PubChem FTP site |
Processing a large number of compound ID's can take a long time. For large numbers of CID's the resultant XML file can be many megabytes. This may take a long time to download. After download it takes approximate 60 sec to process a 23MB data file.
It should also be noted that the data files are downloaded using the R interface to Curl. In addition, the PubChem servers do not allow very large query URL's. This limits the number of compound ID's that can be directly pulled of the PubChem servers to about 1000
A list
object, the name of each element is the CID and the
value is the SID's that are associated with the compound in question.
Rajarshi Guha rguha@indiana.edu