This is a test version of Biostars. For the public version, visit https://www.biostars.org.
Problem in making database for metabarcoding using OBITools

Hi all,

I'm new to the OBITools and I'm trying to make database for rbcL (Chloroplast) gene. I've downloaded all plants genome using

wget ftp://ftp.ncbi.nlm.nih.gov/genbank/gbpln*seq.gz

and downloaded the taxonomy from NCBI using

wget ftp://ftp.ncbi.nih.gov/pub/taxonomy/taxdump.tar.gz and tar -zxvf taxdump.tar.gz

here is the result:

saeedmn@saeed-MN:~/nesteco/TOXO$ ls
citations.dmp  division.dmp  gencode.dmp  names.dmp  readme.txt
delnodes.dmp   gc.prt        merged.dmp   nodes.dmp  taxdmp_2021-03-01.zip

When I try to convert using

obiconvert --genbank -t ../TAXO --ecopcrdb-output=ncbi_last ../NCBI/*.seq.gz

I faced the following error:

(base) saeedmn@saeed-MN:~/nesteco/TOXO$ obiconvert --genbank -t ../TAXO --ecopcrdb-output=rbcl_last ../NCBI/*.seq.gz
[Errno 2] No such file or directory: '../TAXO/nodes.dmp'
Exception ignored in: <function EcoPCRDBSequenceWriter.__del__ at 0x7f2e2f489310>
Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/obitools/ecopcr/sequence.py", line 180, in __del__
    self.close()
  File "/usr/lib/python3/dist-packages/obitools/ecopcr/sequence.py", line 149, in close
    self._file.seek(0,0)
AttributeError: 'EcoPCRDBSequenceWriter' object has no attribute '_file'

Can anyone suggest how I can overcome this error? Thanks in advance.

software error

0 answers

No answers yet.

Log in to answer this question.