Compute the p by p matrix \(\mathcal{V}\) whose columns describe
how infective bites arising from all the mosquitoes biting a single human on a
single day are dispersed to other patches, accounting for movement and mortality.
$$\mathcal{V} = fq\Omega^{-1} \cdot e^{-\Omega\tau} \cdot \mbox{diag}\left(\frac{fqM}{W}\right)$$
metric_calV(f, q, Omega, tau, M, W)a numeric matrix