family information in snpgdsGDS2PED

[treebreeder]

How can I translate my .gds into .ped and automatically taking the family information from my gds object which I added before with add.gdsn() ?

Such as from:

• [ ]
  |--+ sample.id { Str8 173 LZMA_ra(15.7%), 577B }
  |--+ snp.id { Int32 17489 LZMA_ra(16.9%), 11.5K }
  |--+ snp.position { Int32 17489 LZMA_ra(58.1%), 39.7K }
  |--+ snp.chromosome { UInt8 17489 LZMA_ra(37.7%), 6.4K }
  |--+ snp.allele { Str8 17489 LZMA_ra(12.9%), 8.8K }
  |--+ snp.rs.id { Str8 17489 LZMA_ra(0.77%), 141B }
  |--+ genotype { Bit2 173x17489, 738.7K } *
  |--+ pop_code { Int32,factor 173, 692B } *
  --+ fam [ data.frame ] *
  --+ pop { Int32,factor 173, 692B } *

[zhengxwen]

snpgdsGDS2PED() and snpgdsGDS2BED() do not have such function.
But I could consider adding the function in future.

[treebreeder]

I think this would be nice, since it would save some extra work when you have to manipulate the ped file afterwards, although the necessary information is potentially already there!
Thanks