Two types of transitions are simulated by LUCAS: grid cell (or pixel-based) and patch-based. The determination of the pixel-based landscape transitions is relatively trivial because each grid cell changes independently. The transition probabilities from the initial cover type to all other cover types are calculated using Equation (1) and the value of the landscape condition label of a grid cell. A pseudorandom number is then drawn from a uniform distribution between zero and one (see Section 3.3.3). This number, in turn, determines the new land cover type for this grid cell via the calculated probabilities.