Description Usage Arguments Value Examples
Auxiliar function. It computes a random walk with jumps, that is used to generate forecasted demand.
1 2 | random_walk_passengers(start_seed = 196860, num_years = 33, mu = 0,
sd = 0.7 * start_seed, beta = 1, jump = T)
|
start_seed |
A number. First point of the series. |
num_years |
A number. Number of years. Usually 33. |
mu |
A number |
sd |
A number |
beta |
A number. Effect of past step on the next step. |
jump |
Logical. If TRUE, in the eight year of the series the forecasted demand increases by 25 percent relative to last value (plus error). Equivalent to set beta =1.25 for year 8. |
a vector of simulated random walk times series of size equal to num_years
1 | random_walk_passengers(start_seed=19686)
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