Are genotypes only numeric? Can they be categorical?

[ysc12451]

It seems that by default the genotypes are considered as numeric variables, like 0/0 as number 0, 0/1 as number 1, 1/1 as number 2. I am wondering whether tensorQTL can treat them as categorical variables (like factors) and run. Thanks!

[francois-a]

Genotypes need to be numeric. Can you describe the specific mapping you're trying to run?

[ysc12451]

In my mapping case, the effect of genotype does not necessarily have a linear trend in 0-1-2. So treating them as categotical variables could be better.