ruanjue / wtdbg2

Redbean: A fuzzy Bruijn graph approach to long noisy reads assembly
GNU General Public License v3.0
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参数设置调整 #226

Open kuangtianhui opened 3 years ago

kuangtianhui commented 3 years ago

我用”wtdbg2 -x ont -p 19 -AS 2 -s 0.05 -L 5000 --edge-min 4 -g 1.4g -t 40“ 参数组装基因组,基因组组装结果为3.9Gb。当我把--edge-min 8,基因组大小为1.14Gb.但是,但是这两个组装结果的contig数目都超过了20000,N50的值没有超过100KB。请问您能提供一些宝贵的建议吗?

ruanjue commented 3 years ago

It should be a complicate genome, try tune parameters -R, --aln-dovetail 0 and others referred in issues.

kuangtianhui commented 3 years ago

This genome is highly repetitive, but with low heterogeneity rate. What's your suggestions about the settings? How does the parameter --edge-min work? I tried 2, 4, 8, but get very different assembly results (genome size). plot

mengnanwang96 commented 3 years ago

I want to know what is the maining of parameter -e and how it works, thank you sir

ruanjue commented 3 years ago

The minimal count of reads to support that two genomic regions are directly connected in order. On graph, the minimal count of reads to support a confident edge.