Dear helper,

I used samtools and bcftools to get the SNP. However, I used the same  
Bam file and the same procedures to run  samtools and bcftools with  
different versions. The results are different. What I did is the  
following.

Version 1.0

samtools mpileup -t DP -ugf fasta_file bam_file > output_mpileup
bcftools call output_mpileup -vmO v -o output_call

The output_call that I got is around 10 SNPs.

Version 1.3.1

samtools mpileup -t DP -ugf fasta_file bam_file > output_mpileup
bcftools call output_mpileup -vmO v -o output_call

The output_call that I got is around 320 SNPs.

Did you meet the same situation before? Is there any idea about that?  
Thank you.

Best regards,

Silas

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