/**
* Reads a subpopulation from the format generated by printSubpopulation(....). If the number of
* individuals is not identical, the individuals array will be deleted and replaced with a new
* array, and a warning will be generated as individuals will have to be created using
* newIndividual(...) rather than readIndividual(...).
*/
public void readSubpopulation(final EvolutionState state, final LineNumberReader reader)
throws IOException {
// read in number of individuals and check to see if this appears to be a valid subpopulation
int numIndividuals = Code.readIntegerWithPreamble(NUM_INDIVIDUALS_PREAMBLE, state, reader);
// read in individuals
if (numIndividuals != individuals.length) {
state.output.warnOnce(
"On reading subpopulation from text stream, the subpopulation size didn't match.\n"
+ "Had to resize and use newIndividual() instead of readIndividual().");
individuals = new Individual[numIndividuals];
for (int i = 0; i < individuals.length; i++) {
int j = Code.readIntegerWithPreamble(INDIVIDUAL_INDEX_PREAMBLE, state, reader);
// sanity check
if (j != i)
state.output.warnOnce(
"On reading subpopulation from text stream, some individual indexes in the subpopulation did not match.");
individuals[i] = species.newIndividual(state, reader);
}
} else
for (int i = 0; i < individuals.length; i++) {
int j = Code.readIntegerWithPreamble(INDIVIDUAL_INDEX_PREAMBLE, state, reader);
// sanity check
if (j != i)
state.output.warnOnce(
"On reading subpopulation from text stream, some individual indexes in the subpopulation did not match.");
if (individuals[i] != null) individuals[i].readIndividual(state, reader);
else {
state.output.warnOnce(
"On reading subpopulation from text stream, some of the preexisting subpopulation's slots were null.\n"
+ "Had to use newIndividual() instead of readIndividual(). If you're starting an evolutionary run by reading an\n"
+ "existing population from a file, this is expected -- ignore this message.");
individuals[i] = species.newIndividual(state, reader);
}
}
}
