Displaying 2 results from an estimated 2 matches for "retmax".
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regmax
2012 Dec 11
1
query multiple terms in PubMed abstract
Hi:
I am trying to search PubMed abstracts which contains BOTH two terms:
COL4A1 AND Ocular. I am using the following code:
url= "http://eutils.ncbi.nlm.nih.gov/entrez/eutils/esearch.fcgi?"
search = paste(url,
"db=pubmed&term=COL4A1+AND+Ocular[abstract]&retmax=300", sep="")
docId <- xmlTreeParse(getURL(paste(url, search, sep="")),
useInternalNodes=TRUE)
I want to get the reply where BOTH the terms exist in abstract. But it is
not doing that now. Any idea?
Thanks
john
[[alternative HTML version deleted]]
2012 Dec 27
1
Conjunction and disjunction in pubmed query
...y pubmed abstracts using the following syntax:
url= "http://eutils.ncbi.nlm.nih.gov/entrez/eutils/esearch.fcgi?"
search = paste(url, "db=pubmed&term=", queryTerm1, "+AND+",
queryTerm2,"+OR+",queryTerm3, "+OR+", queryTerm4,
"[abstract]&retmax=100&usehistory=y", sep="")
docId <- xmlTreeParse(getURL(paste(url, search, sep="")),
useInternalNodes=TRUE)
I want to fetch abstracts containing queryTerm1 AND queryTerm2
Or queryTerm3 OR queryTerm4. The code runs without error, but from the
result I find that conj...