Wrong format .ped in PLINK I know that I don't have the correct format in my .ped file for PLINK but I don't know how to convert it.
My actual file is something like:

BSCAN BSCAN20016 0 0 2 0 0 1 1 1....
BSCAN BSCAN20017 0 0 2 0 0 1 1 1....
BSCAN BSCAN20018 0 0 2 0 0 1 1 1....


Where column 1 is FamilyID, column 2 is ID, column 3 is FatherID, column 4 MotherID, column 5 Sex and then the genotype of each individual.
I only need to create binary files, so I tried to run:

plink-1.9-rc --file admixed --make-bed --no-pheno --cow --out admixed


but the program shows: Error: half-missing call in .ped file at variant 1, line 1.

Anyone know how can I change the format or recode it to make a correct input?

Thanks in advance!
So, columns 7 and 8 should be the genotype of variant 1 (each column is one of the alleles). You have them as 0 1, which means absent and major allele.

I think you're just missing a column. From the doc:

Column 6 is Phenotype value ('1' = control, '2' = case, '-9'/'0'/non-numeric = missing data if case/control)

Ideally you would know which SNPs are heterozygous based on your SNP calling and have such SNPs as 1 2, but if you have a homozygous organism or if you're working with data that's been flattened you can simply generate the .ped file with the same number twice for each SNP.