Hello All,
I am trying to import BLAST tabular output into MEGAN with no great success.
This is the file: https://www.dropbox.com/s/w141xel83e3lzij/new-blast.txt?dl=0
I am not sure if I got the format correct as I could not locate it in the manual. Thank you.
Daniel
2
This is what MEGAN expects in blast-tab format:
Column |
Data |
Description |
1. |
queryId |
read id |
2. |
subjectId |
reference sequence id |
3. |
pident |
percent identity |
4. |
length |
alignment length |
5. |
mismatch |
number of mismatches |
6. |
gapopen |
number of gap openings |
7. |
qstart |
start of alignment in query |
8. |
qend |
end of alignment in query |
9. |
sstart |
start of alignment in subject |
10. |
send |
end of alignment in subject |
11. |
evalue |
expect value |
12. |
bitscore |
bit score |
Import of your data fails because your third value is much larger than 100 (so can’t be a percent identity)
@Daniel, is it compulsory to have all 12 columns in the BLAST output for import into MEGAN?
Daniel
4
Yes, all 12 columns must be present in the described order.
Lily
5
Hello, Daniel,
Could you please help answer Ziyi and my questions about MEGAN6.15.2 on Linux won’t open (MEGAN6.15.2 on Linux won't open)?
Thank you in advance!
Lily