public class Max extends AbstractStorelessUnivariateStatistic implements AggregatableStatistic<Max>, Serializable
NaN
iff all values are NaN
(i.e. NaN
values have no impact on the value of the statistic).Double.POSITIVE_INFINITY
,
the result is Double.POSITIVE_INFINITY.
Note that this implementation is not synchronized. If
multiple threads access an instance of this class concurrently, and at least
one of the threads invokes the increment()
or
clear()
method, it must be synchronized externally.
Constructor and Description |
---|
Max()
Create a Max instance.
|
Max(Max original)
Copy constructor, creates a new
Max identical
to the original . |
Modifier and Type | Method and Description |
---|---|
void |
aggregate(Max other)
Aggregates the provided instance into this instance.
|
void |
clear()
Clears the internal state of the Statistic
|
Max |
copy()
Returns a copy of the statistic with the same internal state.
|
double |
evaluate(double[] values,
int begin,
int length)
Returns the maximum of the entries in the specified portion of
the input array, or
Double.NaN if the designated subarray
is empty. |
long |
getN()
Returns the number of values that have been added.
|
double |
getResult()
Returns the current value of the Statistic.
|
void |
increment(double d)
Updates the internal state of the statistic to reflect the addition of the new value.
|
equals, hashCode, toString
clone, finalize, getClass, notify, notifyAll, wait, wait, wait
aggregate, aggregate
accept, incrementAll, incrementAll
evaluate
andThen
public Max()
public Max(Max original) throws NullArgumentException
Max
identical
to the original
.original
- the Max
instance to copyNullArgumentException
- if original is nullpublic void increment(double d)
increment
in interface StorelessUnivariateStatistic
increment
in class AbstractStorelessUnivariateStatistic
d
- the new value.public void clear()
clear
in interface StorelessUnivariateStatistic
clear
in class AbstractStorelessUnivariateStatistic
public double getResult()
getResult
in interface StorelessUnivariateStatistic
getResult
in class AbstractStorelessUnivariateStatistic
Double.NaN
if it
has been cleared or just instantiated.public long getN()
getN
in interface StorelessUnivariateStatistic
public void aggregate(Max other)
This method can be used to combine statistics computed over partitions or subsamples - i.e., the value of this instance after this operation should be the same as if a single statistic would have been applied over the combined dataset.
aggregate
in interface AggregatableStatistic<Max>
other
- the instance to aggregate into this instancepublic double evaluate(double[] values, int begin, int length) throws MathIllegalArgumentException
Double.NaN
if the designated subarray
is empty.
Throws MathIllegalArgumentException
if the array is null or
the array index parameters are not valid.
NaN
iff all values are NaN
(i.e. NaN
values have no impact on the value of the statistic).Double.POSITIVE_INFINITY
,
the result is Double.POSITIVE_INFINITY.
evaluate
in interface StorelessUnivariateStatistic
evaluate
in interface UnivariateStatistic
evaluate
in interface MathArrays.Function
values
- the input arraybegin
- index of the first array element to includelength
- the number of elements to includeMathIllegalArgumentException
- if the array is null or the array index
parameters are not validUnivariateStatistic.evaluate(double[], int, int)
public Max copy()
copy
in interface StorelessUnivariateStatistic
copy
in interface UnivariateStatistic
copy
in class AbstractStorelessUnivariateStatistic
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