tech.bitey.dataframe

Interface NumericColumn<E extends Number>

Type Parameters:

E - a numeric type

All Superinterfaces:

Collection<E>, Column<E>, Iterable<E>, List<E>

All Known Subinterfaces:

ByteColumn, DecimalColumn, DoubleColumn, FloatColumn, IntColumn, LongColumn, ShortColumn

public interface NumericColumn<E extends Number>
extends Column<E>

A Column with a numeric element type.

Author:

biteytech@protonmail.com

Field Summary

Fields inherited from interface tech.bitey.dataframe.Column

BASE_CHARACTERISTICS

Method Summary

Modifier and Type	Method and Description
double	max() Returns the largest non-null value in this column.
double	mean() Returns the mean/average of the non-null values in this column.
double	min() Returns the smallest non-null value in this column.
default double	stddev() Returns the sample standard deviation of the non-null values in this column.
double	stddev(boolean population) Returns the specified standard deviation of the non-null values in this column.

Methods inherited from interface tech.bitey.dataframe.Column

append, append, ceiling, characteristics, comparator, copy, first, floor, getType, head, head, higher, isDistinct, isNonnull, isNull, isSorted, last, lower, spliterator, subColumn, subColumnByValue, subColumnByValue, tail, tail, toDistinct, toHeap, toSorted

Methods inherited from interface java.util.List

add, add, addAll, addAll, clear, contains, containsAll, equals, get, hashCode, indexOf, isEmpty, iterator, lastIndexOf, listIterator, listIterator, remove, remove, removeAll, replaceAll, retainAll, set, size, sort, subList, toArray, toArray

Methods inherited from interface java.util.Collection

parallelStream, removeIf, stream

Methods inherited from interface java.lang.Iterable

forEach

Method Detail

min

double min()

Returns the smallest non-null value in this column.

Returns:

the smallest value, or NaN if this column is empty or contains only null values.

max

double max()

Returns the largest non-null value in this column.

Returns:

the largest value, or NaN if this column is empty or contains only null values.

mean

double mean()

Returns the mean/average of the non-null values in this column.

Returns:

the mean value, or NaN if this column is empty or contains only null values.

stddev

double stddev(boolean population)

Returns the specified standard deviation of the non-null values in this column.

Parameters:

population - - computes population stddev (over n) if true, otherwise computes sample stddev (over n - 1).

Returns:

the specified stddev value, or NaN if this column is empty or contains only null values.

stddev

default double stddev()

Returns the sample standard deviation of the non-null values in this column.

Returns:

the sample stddev value, or NaN if this column is empty or contains only null values.