@SuppressWarnings("deprecation")
protected final void compute() {
if (input[0].isDefined() && input[1].isDefined() && input[2].isDefined()) {
int param = (int) Math.round(a.getDouble());
double val = b.getDouble();
try {
PoissonDistribution dist = getPoissonDistribution(param);
if (isCumulative.getBoolean()) num.setValue(dist.cumulativeProbability(val)); // P(X <= val)
else num.setValue(dist.probability(val)); // P(X = val)
} catch (Exception e) {
Application.debug(e.getMessage());
num.setUndefined();
}
} else num.setUndefined();
}
@Override
public final void compute() {
if (input[0].isDefined() && input[1].isDefined()) {
double param = a.getDouble();
double val = b.getDouble();
try {
PoissonDistribution dist = getPoissonDistribution(param);
double result = dist.inverseCumulativeProbability(val);
// eg InversePascal[1,1,1] returns 2147483647
if (result >= Integer.MAX_VALUE) num.setUndefined();
else num.setValue(result + 1);
} catch (Exception e) {
num.setUndefined();
}
} else num.setUndefined();
}
/**
* @param param mean
* @return Poisson distribution
*/
protected PoissonDistribution getPoissonDistribution(double param) {
if (poisson == null || poisson.getMean() != param) poisson = new PoissonDistributionImpl(param);
return poisson;
}
