This feature changes the effective population size of one population. The change is performed at a given time point and applies to the time interval further on into the past from this point. The population size is set to a fraction of N0.
The number of the population whichs size changes. Can also be set to "all". Then the size changes applies to all populations.
The time at which the population's size is changed.
The loci for which this features is used. Can either be
The feature, which can be added to a model using '+'.
The feature, which can be added to a model created with
For continuous size changes over time:
For creating a model:
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# A model with one smaller population: model <- coal_model(c(20, 5), 3) + feat_size_change(.1, population = 2) + feat_mutation(1.0) + feat_migration(0.5, 2, 1) + sumstat_sfs() simulate(model) # A model of one population that experienced a bottleneck: model <- coal_model(10, 1) + feat_size_change(0.1, time = 0.3) + feat_size_change(1.0, time = 0.5) + feat_mutation(20) + sumstat_sfs() simulate(model)