Array2d class

Class to create 2 dimensions Array.

Constructors:

Array2d(List<double> list) // default constructor

Array2d.empty() // empty array

Array2d.fromArray(Array list) // from another array

Array2d.fixed(int length) // from a fixed length

References

  1. "Jama". https://math.nist.gov/javanumerics/jama/. Retrieved 2019-07-17.
  2. "numpylinalg.solve". https://docs.scipy.org/doc/numpy/reference/generated/numpy.linalg.solve.html. Retrieved 2019-07-19.

Examples

import 'package:scidart/src/numdart/numdart.dart';

var matrix = Array2d.empty();
var line = [1.0 ,2.0 , 3.0];

matrix.add(line);
matrix.add(line);
matrix.add(line);

print(matrix);

/* output:
Array2d([Array([1.0, 2.0, 3.0]), Array([1.0, 2.0, 3.0]), Array([1.0, 2.0, 3.0])])
*/
Inheritance

Constructors

Array2d(List<Array> list)
Array2d.empty()
Array2d.fixed(int row, int column, {double? initialValue})
Array2d.fromArray(Array2d list)
Array2d.fromVector(Array vals, int mRow)
Construct a matrix from a one-dimensional packed array

Properties

column → int
no setter
first ↔ Array
The first element.
getter/setter pairinherited
hashCode → int
The hash code for this object.
no setteroverride
isEmpty → bool
Whether this collection has no elements.
no setterinherited
isNotEmpty → bool
Whether this collection has at least one element.
no setterinherited
iterator → Iterator<Array>
A new Iterator that allows iterating the elements of this Iterable.
no setterinherited
l ↔ List<Array?>
getter/setter pair
last ↔ Array
The last element.
getter/setter pairinherited
length ↔ int
Return the length of Array2d
getter/setter pairoverride
reversed → Iterable<Array>
An Iterable of the objects in this list in reverse order.
no setterinherited
row → int
no setter
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
single → Array
Checks that this iterable has only one element, and returns that element.
no setterinherited

Methods

add(Array element) → void
Adds value to the end of this list, extending the length by one.
inherited
addAll(Iterable<Array> iterable) → void
Appends all objects of iterable to the end of this list.
inherited
any(bool test(Array element)) → bool
Checks whether any element of this iterable satisfies test.
inherited
asMap() → Map<int, Array>
An unmodifiable Map view of this list.
inherited
cast<R>() → List<R>
Returns a view of this list as a list of R instances.
inherited
clear() → void
Removes all objects from this list; the length of the list becomes zero.
inherited
contains(Object? element) → bool
Whether the collection contains an element equal to element.
inherited
copy() → Array2d
Generate a copy of the current matrix
elementAt(int index) → Array
Returns the indexth element.
inherited
every(bool test(Array element)) → bool
Checks whether every element of this iterable satisfies test.
inherited
expand<T>(Iterable<T> f(Array element)) → Iterable<T>
Expands each element of this Iterable into zero or more elements.
inherited
fillRange(int start, int end, [Array? fill]) → void
Overwrites a range of elements with fillValue.
inherited
firstWhere(bool test(Array element), {Array orElse()?}) → Array
The first element that satisfies the given predicate test.
inherited
fold<T>(T initialValue, T combine(T previousValue, Array element)) → T
Reduces a collection to a single value by iteratively combining each element of the collection with an existing value
inherited
followedBy(Iterable<Array> other) → Iterable<Array>
Creates the lazy concatenation of this iterable and other.
inherited
forEach(void action(Array element)) → void
Invokes action on each element of this iterable in iteration order.
inherited
getColumn(int column) → Array?
Return Array with the column elements
getRange(int start, int end) → Iterable<Array>
Creates an Iterable that iterates over a range of elements.
inherited
indexOf(Object? element, [int start = 0]) → int
The first index of element in this list.
inherited
indexWhere(bool test(Array element), [int start = 0]) → int
The first index in the list that satisfies the provided test.
inherited
insert(int index, Array element) → void
Inserts element at position index in this list.
inherited
insertAll(int index, Iterable<Array> iterable) → void
Inserts all objects of iterable at position index in this list.
inherited
isMatrix({bool throwIfIsNot = true}) → bool
join([String separator = ""]) → String
Converts each element to a String and concatenates the strings.
inherited
lastIndexOf(Object? element, [int? start]) → int
The last index of element in this list.
inherited
lastIndexWhere(bool test(Array element), [int? start]) → int
The last index in the list that satisfies the provided test.
inherited
lastWhere(bool test(Array element), {Array orElse()?}) → Array
The last element that satisfies the given predicate test.
inherited
map<T>(T f(Array element)) → Iterable<T>
The current elements of this iterable modified by toElement.
inherited
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
reduce(Array combine(Array previousValue, Array element)) → Array
Reduces a collection to a single value by iteratively combining elements of the collection using the provided function.
inherited
remove(Object? element) → bool
Removes the first occurrence of value from this list.
inherited
removeAt(int index) → Array
Removes the object at position index from this list.
inherited
removeLast() → Array
Removes and returns the last object in this list.
inherited
removeRange(int start, int end) → void
Removes a range of elements from the list.
inherited
removeWhere(bool test(Array element)) → void
Removes all objects from this list that satisfy test.
inherited
replaceRange(int start, int end, Iterable<Array> newContents) → void
Replaces a range of elements with the elements of replacements.
inherited
retainWhere(bool test(Array element)) → void
Removes all objects from this list that fail to satisfy test.
inherited
setAll(int index, Iterable<Array> iterable) → void
Overwrites elements with the objects of iterable.
inherited
setRange(int start, int end, Iterable<Array> iterable, [int skipCount = 0]) → void
Writes some elements of iterable into a range of this list.
inherited
shuffle([Random? random]) → void
Shuffles the elements of this list randomly.
inherited
singleWhere(bool test(Array element), {Array orElse()?}) → Array
The single element that satisfies test.
inherited
skip(int count) → Iterable<Array>
Creates an Iterable that provides all but the first count elements.
inherited
skipWhile(bool test(Array element)) → Iterable<Array>
Creates an Iterable that skips leading elements while test is satisfied.
inherited
sort([int compare(Array a, Array b)?]) → void
Sorts this list according to the order specified by the compare function.
inherited
subArray2d(int rowStart, int rowEnd, int colStart, int colEnd) → Array2d
Return a Sub Array2d with the rage of rows columns elements specified
sublist(int start, [int? end]) → List<Array>
Returns a new list containing the elements between start and end.
inherited
take(int count) → Iterable<Array>
Creates a lazy iterable of the count first elements of this iterable.
inherited
takeWhile(bool test(Array element)) → Iterable<Array>
Creates a lazy iterable of the leading elements satisfying test.
inherited
toList({bool growable = true}) → List<Array>
Creates a List containing the elements of this Iterable.
inherited
toSet() → Set<Array>
Creates a Set containing the same elements as this iterable.
inherited
toString() → String
Convert an Array2d object to a String representation
override
where(bool test(Array element)) → Iterable<Array>
Creates a new lazy Iterable with all elements that satisfy the predicate test.
inherited
whereType<T>() → Iterable<T>
Creates a new lazy Iterable with all elements that have type T.
inherited

Operators

operator *(Array2d b) → Array2d
Multiply two arrays with the same size
operator +(List<Array> b) → List<Array>
Add two arrays with the same size
override
operator -(Array2d b) → Array2d
Subtract two arrays with the same size
operator /(Array2d b) → Array2d
Divide two arrays with the same size
operator ==(Object b) → bool
compare two arrays
override
operator [](int index) → Array
The object at the given index in the list.
override
operator []=(int index, Array value) → void
Sets the value at the given index in the list to value.
override