These are precomputed migrationArrays and migrationArrayMaps (soon).
To access one with 3 populations and no more than 3 free parameters, use data(MigrationArray_3pop_3K)
To access one with 4 populations and no more than 3 free parameters, use data(MigrationArray_4pop_3K)
Two objects are included in each 1. migrationArray, which lists specifications for models to be analyzed 2. migrationArrayMap, which lists parameter indexes for each model included in migrationArray (not yet available)
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