Array2d class Null safety

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
read-only
first Array
Returns the first element. [...]
read / write, inherited
hashCode int
The hash code for this object. [...]
read-only, inherited
isEmpty bool
Returns true if there are no elements in this collection. [...]
read-only, inherited
isNotEmpty bool
Returns true if there is at least one element in this collection. [...]
read-only, inherited
iterator Iterator<Array>
Returns a new Iterator that allows iterating the elements of this Iterable. [...]
read-only, inherited
l List<Array?>
read / write
last Array
Returns the last element. [...]
read / write, inherited
length int
Return the length of Array2d [...]
read / write, override
reversed Iterable<Array>
An Iterable of the objects in this list in reverse order.
read-only, inherited
row int
read-only
runtimeType Type
A representation of the runtime type of the object.
read-only, inherited
single Array
Checks that this iterable has only one element, and returns that element. [...]
read-only, inherited

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
Returns 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>
Returns 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({dynamic 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
Returns 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 non-existent 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
Returns the single element that satisfies test. [...]
inherited
skip(int count) Iterable<Array>
Returns an Iterable that provides all but the first count elements. [...]
inherited
skipWhile(bool test(Array element)) Iterable<Array>
Returns 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>
Returns a lazy iterable of the count first elements of this iterable. [...]
inherited
takeWhile(bool test(Array element)) Iterable<Array>
Returns 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 a Array2d object to a String representation [...]
override
where(bool test(Array element)) Iterable<Array>
Returns a new lazy Iterable with all elements that satisfy the predicate test. [...]
inherited
whereType<T>() Iterable<T>
Returns 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> other) List<Array>
Returns the concatenation of this list and other. [...]
inherited
operator -(Array2d b) Array2d
Multiply 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