Unconfigured Ad

Collapse
X
 
  • Time
  • Show
Clear All
new posts
  • Oyster
    Junior Member
    • Nov 2010
    • 4

    #1

    bowtie - reads aligned does not match reported alignments

    Hi,

    A bowtie question of output interpretation,

    CMD:

    bowtie -p 16 -a --best --strata -q -S --sam-nohead -q -v 2 target single_dir/single_fa > single_dir/single_fa.pre.sam

    STDERR:

    # reads processed: 32354340
    # reads with at least one reported alignment: 15905262 (49.16%)
    # reads that failed to align: 16449078 (50.84%)
    Reported 24030582 alignments to 1 output stream(s)

    I could only locate a few examples online of bowtie stderr, and in the singular stderr example in the bowtie manual the #reads reported = # alignments.

    Is it that in the event of a tie (two alignments equally as "good") that both are reported?

    What I would like is for all alignments to be considered ("-a"), yet only those reported that are best for each read (presumably "--best --strata"). I've tried adding "-k 1" to the command above, but the output is identical.

    Any suggestions/interpretations?

Latest Articles

Collapse

  • kinpict.com
    Reply to 16S/ITS Profiling vs. Shotgun Metagenomics: What Changes in Your Workflow?
    by kinpict.com
    The part about this topic feels surprisingly grounded, and the details on the page is the bit that made me slow down. I’d keep <a href="https://kinpict.com/">ai family photo generator</a> bookmarked for later.
    Today, 06:37 PM
  • SEQadmin2
    16S/ITS Profiling vs. Shotgun Metagenomics: What Changes in Your Workflow?
    by SEQadmin2





    NGS has revolutionized clinical microbiology by offering new ways to identify and surveil pathogens without prior knowledge of the target. One popular approach is 16S rRNA and ITS amplicon sequencing, which targets specific microbial markers. But studies are increasingly incorporating shotgun metagenomics, a technique that sequences all DNA from a sample without targeting specific microbial markers. This approach allows more detailed taxonomic classification,...
    10-30-2026, 06:46 AM

ad_right_rmr

Collapse

News

Collapse

Topics Statistics Last Post
Started by SEQadmin2, 11-12-2026, 07:59 AM
0 responses
27 views
0 reactions
Last Post SEQadmin2  
Started by SEQadmin2, 11-05-2026, 09:25 AM
0 responses
35 views
0 reactions
Last Post SEQadmin2  
Started by SEQadmin2, 11-03-2026, 11:54 AM
2 responses
56 views
0 reactions
Last Post kinpict.com  
Started by SEQadmin2, 10-28-2026, 09:57 AM
0 responses
175 views
0 reactions
Last Post SEQadmin2  
Working...