| Class | Algebraic operators and function |
| Name | istyp | untyp |
| Arguments | <marker> |
Test if genotyped at given marker. Necessary since if imputation is higher than -1, all untyped individuals have a genotype containing negative allele numbers (used to start MCMC algorithm).
Example:
>> include williamsex.in >> count istyp ldl
| << (rand) | Up to index | >> (ishom) |