Hello everybody!
I have a little problem: I'm trying to download a large set of fasta sequences from Entrez, but the number of sequences retrieved differs from the announced number:
When I am using the link in a browser:
It will give me a certain number of sequences.
But when I use the perl script (as explain here: https://www.ncbi.nlm.nih.gov/books/N..._esayers-5-4-3), the number of final fasta sequences is always lower...
I am using just a small difference compared with the tutorial:
Does anybody had the same problem before? Does anybody know where does it come from and how to fix it?
Thanks in advance,
Denis
I have a little problem: I'm trying to download a large set of fasta sequences from Entrez, but the number of sequences retrieved differs from the announced number:
When I am using the link in a browser:
Code:
https://eutils.ncbi.nlm.nih.gov/entrez/eutils/esearch.fcgi?db=nucleotide&term=Phaeophyceae[Organism]&usehistory=y
But when I use the perl script (as explain here: https://www.ncbi.nlm.nih.gov/books/N..._esayers-5-4-3), the number of final fasta sequences is always lower...
I am using just a small difference compared with the tutorial:
Code:
$efetch_url = $base ."efetch.fcgi?db=nucleotide&WebEnv=$web"; $efetch_url .= "&query_key=$key&retstart=$retstart"; $efetch_url .= "&retmax=$retmax&rettype=fasta&retmode=text";
Thanks in advance,
Denis
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