Question

Is there any matrix operations defined in Matlab. Octave, R or Python to work with Joint, Marginal, and Conditional probabilities?For example if I have a probability distribution table which looks some thing like the following:
Can I find out the conditional probability of P(I/DG) or marginal probability P(D,G) using matrix operations?
I D G
i0 d0 g1 0.126
i0 d0 g2 0.168
i0 d0 g3 0.126
i0 d1 g1 0.009
i0 d1 g2 0.045
i0 d1 g3 0.126
i1 d0 g1 0.252
i1 d0 g2 0.0224
i1 d0 g3 0.0056
i1 d1 g1