a.nocvrt         Test that Matrix eQTL gives correct estimates for additive linear model. Homoscedastic case without covariates.
b.cvrt           Test that Matrix eQTL gives correct estimates for additive linear model. Homoscedastic case with covariates.
c.weights        Test that Matrix eQTL gives correct estimates for additive linear model. Heteroscedastic case with covariates.
d.ANOVA          Test that Matrix eQTL gives correct estimates for ANOVA linear model with 3 groups. Heteroscedastic case with covariates.
d.ANOVA5         Test that Matrix eQTL gives correct estimates for ANOVA linear model with 5 groups. Heteroscedastic case with covariates.
e.interaction    Test that Matrix eQTL gives correct estimates for linear model with genotype-covariate interaction. Heteroscedastic case with covariates.
p.hist           Sample code for plotting histogram of p-values
q.qqplot         Sample code for plotting QQ-plot of p-values
sample.all       Sample code for eQTL analysis of the toy data set.
sample.cis       Sample code for eQTL analysis of the toy data set with separate p-value thresholds and FDR estimation for cis- and trans-eQTLs.