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java.lang.Objectorg.apache.commons.math3.analysis.function.StepFunction
public class StepFunction
Field Summary | |
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private double[] |
abscissa
Abscissae. |
private double[] |
ordinate
Ordinates. |
Constructor Summary | |
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StepFunction(double[] x,
double[] y)
Builds a step function from a list of arguments and the corresponding values. |
Method Summary | |
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double |
value(double x)
Compute the value of the function. |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Field Detail |
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private final double[] abscissa
private final double[] ordinate
Constructor Detail |
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public StepFunction(double[] x, double[] y) throws NullArgumentException, NoDataException, DimensionMismatchException
h(x) = y[0] for all x < x[1]
y[1] for x[1] <= x < x[2]
...
y[y.length - 1] for x >= x[x.length - 1]
The value of x[0]
is ignored, but it must be strictly less than
x[1]
.
x
- Domain values where the function changes value.y
- Values of the function.
NonMonotonicSequenceException
- if the x
array is not sorted in strictly increasing order.
NullArgumentException
- if x
or y
are null
.
NoDataException
- if x
or y
are zero-length.
DimensionMismatchException
- if x
and y
do not
have the same length.Method Detail |
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public double value(double x)
value
in interface UnivariateFunction
x
- Point at which the function value should be computed.
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