Dear samtools staff,

I would like to ask help about samtools index. The thing is I failed to 
generate indexed.bam.bai. Here is the error msg:

$ samtools index -b -@ 20 aln.sorted.cy201704.bam

[E::hts_idx_check_range] Region 536856988..536888726 cannot be stored in a bai 
index. Try using a csi index
[E::sam_index] Read 'm64291e_211224_041609/132253067/22850_47574' with 
ref_name='chr1', ref_length=759857066, flags=16, pos=536856989 cannot be indexed
samtools index: failed to create index for "aln.sorted.cy201704.bam": Numerical 
result out of range

I guess there are some very long contigs/chromosomes in 
aln.sorted.cy201704.bam. I know I should and actually have generated the csi 
index in this case. But the next step in my plan is to call the variants. Those 
callers I know, like sniffles, SVIM, only accept BAI index as input.

Do you have suggestions for this situation? Maybe there is a caller that can 
take CSI index as input? Or there is a way to convert CSI index to BAI index?

Thank you fou your time. I'm looking forward to your reply.

Regards,


Ruixue

PhD Candidate | Jinzhong Fu’s Lab

Department of Integrative Biology

University of Guelph

50 Stone Rd E | Guelph, ON | N1G 2W1

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