How to calculate switch errors on phased pedigree data?

Question

[S. Roa]

Hello, everyone!

I'm working with haplotype inference algorithms in pedigree genotype data, and I would like to know if there is a tool or script to calculate switch errors on phased pedigree data (Plink formatted)?

I already know that VCFtools do exist, and other scripts, but they only work with VCF format.

Note: I tried to convert my phased pedigree data to VCF but I lost phase, so, this approach does not seem to be helpful, that's why I'm looking for a specific tool to detect switches on phased pedigree data.

Thank you very much in advance! Regards!