Blast++与Diamond区别之一 qcovs

#Blast++
--outfmt  '6 qseqid sseqid pident length mismatch gapopen qlen qstart qend slen sstart send evalue bitscore qcovs qcovhsp'

#Diamond
--outfmt  6 qseqid sseqid pident length mismatch gapopen qlen qstart qend slen sstart send evalue bitscore qcovhsp

#注意细节，Diamond不需要单引号，少了一个 qcovs 的计算，源码也是没写

名词解释：
High Scoring Pairs (HSP)

query and subject coverage

qcovs means Query Coverage Per Subject
qcovhsp means Query Coverage Per HSP
qcovus means Query Coverage Per Unique Subject (blastn only)

参考自：
BLAST中，与HSP和query_coverage(qcov)相关的关键参数
diamond-as-alternative-to-blastp
Question: BLAST definition and difference between 'qcovs' and 'qcovhsp'