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Issue with my BlastFrost result #12
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Hi David, |
Hi Nina, Thanks for reaching out! My queries:
The first one should be present in all the sequences, but the last one no. Thank you for your help Nina Best, |
Hi David, I tested your queries on strains SRR18349609, SRR18349610 and SRR18349615 and I find both queries in all strains (as confirmed by blastn, but you'll know your data better), though in a rather fragmented fashion (see search result below). I have to admit that I never really used BlastFrost on graphs built from sequencing reads before, we normally used genome assemblies to be able to add more strains into a single graph. Obviously reads will create a much more convoluted graph in the first place, though I am also getting a weird error regarding color IDs from Bifrost (@GuillaumeHolley did you change your API for Color IDs somehow?). I will look into this once I find some time. BlastFrost search result, I marked your queries with '_q'. SRR18349609_q SRR18349615.fastq 1e-400 1:4,0:4,1:2,0:2,1:3,0:5,1:1,0:2,1:3,0:1,1:12,0:2,1:1,0:7,1:2, |
Hey @nluhmann, Yes, the Bifrost API has changed quite a bit over the past 2 years but maybe most significantly for Blastfrost, a big change that breaks color compatibility with previous Bifrost versions was introduced in April this year as reported in the API changelog. I wish I could have avoided this but it was inevitable. The Bifrost version used by Blastfrost is from 2 years ago so Blastfrost, as of now, cannot read any colored graphs generated by Bifrost after April 2022. Two solutions:
Solution one is by far the better one given that Bifrost performance considerably improved after this update. |
Hi, Thanks for all |
Hi,
I ran Blastfrost on 5 listeria stains (the SRR18349609, 10, 11 are in a same cluster according to the pathogene detection of ncbi)
When I querying a sequence shared by all the stains, or a sequence from another stain (SRR18349613 or 15), the result is more or less the same, i-e, it displays match for the SRR18349609 only (and only the number changes according to the query).
Somebody can help me please?
Thank you!
fastas.txt list file:
../fastas_list/SRR18349609.fasta
../fastas_list/SRR18349610.fasta
../fastas_list/SRR18349611.fasta
../fastas_list/SRR18349613.fasta
../fastas_list/SRR18349615.fasta
Commands:
Bifrost build -t 4 -k 31 -i -d -s fastas.txt -c -o a_graph
BlastFrost -g a_graph.gfa -f a_graph.bfg_colors -q query.txt -o test
Messages from the terminal
Graph loading successful
QuerySearch initialized!
Goodbye!
Results:
test ../fastas_list/SRR18349609.fasta 1e-2006 1:1521,
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