Class LineSampler
- java.lang.Object
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- org.apache.commons.rng.sampling.shape.LineSampler
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- All Implemented Interfaces:
ObjectSampler<double[]>,SharedStateObjectSampler<double[]>,SharedStateSampler<SharedStateObjectSampler<double[]>>
public abstract class LineSampler extends Object implements SharedStateObjectSampler<double[]>
Generate points uniformly distributed on a line.Sampling uses:
- Since:
- 1.4
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Method Summary
All Methods Static Methods Instance Methods Abstract Methods Concrete Methods Modifier and Type Method Description protected abstract double[]createSample(double p1mu, double u)Creates the sample given the random variateuin the interval[0, 1].static LineSamplerof(UniformRandomProvider rng, double[] a, double[] b)Create a line sampler with verticesaandb.double[]sample()Create an object sample.abstract LineSamplerwithUniformRandomProvider(UniformRandomProvider rng)Create a new instance of the sampler with the same underlying state using the given uniform random provider as the source of randomness.-
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
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Methods inherited from interface org.apache.commons.rng.sampling.ObjectSampler
samples, samples
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Method Detail
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sample
public double[] sample()
Description copied from interface:ObjectSamplerCreate an object sample.- Specified by:
samplein interfaceObjectSampler<double[]>- Returns:
- a random Cartesian coordinate on the line.
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createSample
protected abstract double[] createSample(double p1mu, double u)
Creates the sample given the random variateuin the interval[0, 1]. The sum1 - uis provided. The sample can be obtained from the line ab using:p = a(1 - u) + ub
- Parameters:
p1mu- plus 1 minus u (1 - u)u- the variate u- Returns:
- the sample
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withUniformRandomProvider
public abstract LineSampler withUniformRandomProvider(UniformRandomProvider rng)
Create a new instance of the sampler with the same underlying state using the given uniform random provider as the source of randomness.- Specified by:
withUniformRandomProviderin interfaceSharedStateSampler<SharedStateObjectSampler<double[]>>- Parameters:
rng- Generator of uniformly distributed random numbers.- Returns:
- the sampler
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of
public static LineSampler of(UniformRandomProvider rng, double[] a, double[] b)
Create a line sampler with verticesaandb. Sampled points are uniformly distributed on the line segmentab.Sampling is supported in dimensions of 1 or above.
- Parameters:
rng- Source of randomness.a- The first vertex.b- The second vertex.- Returns:
- the sampler
- Throws:
IllegalArgumentException- If the vertices do not have the same dimension; the dimension is less than 1; or vertices have non-finite coordinates.
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