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| MultiArray< N, T, A > Class Template Reference Multi-dimensional Shapes and Array Iterators |

Main `MultiArray` class containing the memory management. More...

`#include <vigra/multi_array.hxx>`

Inheritance diagram for MultiArray< N, T, A >:

## Public Types

typedef A | allocator_type
typedef view_type::const_iterator | const_iterator
typedef view_type::const_pointer | const_pointer
typedef view_type::const_reference | const_reference
typedef view_type::const_traverser | const_traverser
typedef view_type::difference_type | difference_type
typedef view_type::difference_type_1 | difference_type_1
typedef view_type::iterator | iterator
typedef MultiArray< N, T, A > | matrix_type
typedef view_type::pointer | pointer
typedef view_type::reference | reference
typedef view_type::size_type | size_type
typedef view_type::traverser | traverser
typedef view_type::value_type | value_type
typedef MultiArrayView< N, typename vigra::detail::ResolveMultiband< T >::type, typename vigra::detail::ResolveMultiband< T >::Stride > | view_type

## Public Member Functions

allocator_type const & | allocator () const
template<class U >
MultiArray & | init (const U &init)
| MultiArray ()
| MultiArray (allocator_type const &alloc)
| MultiArray (difference_type_1 length, allocator_type const &alloc=allocator_type())
| MultiArray (difference_type_1 width, difference_type_1 height, allocator_type const &alloc=allocator_type())
| MultiArray (const difference_type &shape, allocator_type const &alloc=allocator_type())
| MultiArray (const difference_type &shape, const_reference init, allocator_type const &alloc=allocator_type())
| MultiArray (const difference_type &shape, MultiArrayInitializationTag init, allocator_type const &alloc=allocator_type())
| MultiArray (const difference_type &shape, const_pointer init, allocator_type const &alloc=allocator_type())
| MultiArray (const MultiArray &rhs)
template<class Expression >
| MultiArray (multi_math::MultiMathOperand< Expression > const &rhs, allocator_type const &alloc=allocator_type())
template<class U , class StrideTag >
| MultiArray (const MultiArrayView< N, U, StrideTag > &rhs, allocator_type const &alloc=allocator_type())
template<class U , class StrideTag >
MultiArray & | operator*= (const MultiArrayView< N, U, StrideTag > &rhs)
MultiArray & | operator*= (const T &rhs)
template<class Expression >
MultiArray & | operator*= (multi_math::MultiMathOperand< Expression > const &rhs)
template<class U , class StrideTag >
MultiArray & | operator+= (const MultiArrayView< N, U, StrideTag > &rhs)
MultiArray & | operator+= (const T &rhs)
template<class Expression >
MultiArray & | operator+= (multi_math::MultiMathOperand< Expression > const &rhs)
template<class U , class StrideTag >
MultiArray & | operator-= (const MultiArrayView< N, U, StrideTag > &rhs)
MultiArray & | operator-= (const T &rhs)
template<class Expression >
MultiArray & | operator-= (multi_math::MultiMathOperand< Expression > const &rhs)
template<class U , class StrideTag >
MultiArray & | operator/= (const MultiArrayView< N, U, StrideTag > &rhs)
MultiArray & | operator/= (const T &rhs)
template<class Expression >
MultiArray & | operator/= (multi_math::MultiMathOperand< Expression > const &rhs)
MultiArray & | operator= (const MultiArray &rhs)
template<class U , class StrideTag >
MultiArray & | operator= (const MultiArrayView< N, U, StrideTag > &rhs)
MultiArray & | operator= (value_type const &v)
template<class Expression >
MultiArray & | operator= (multi_math::MultiMathOperand< Expression > const &rhs)
void | reshape (const difference_type &shape)
void | reshape (const difference_type &shape, const_reference init)
void | swap (MultiArray &other)
| ~MultiArray ()

## Protected Member Functions

void | allocate (pointer &ptr, difference_type_1 s, const_reference init)
template<class U >
void | allocate (pointer &ptr, difference_type_1 s, U const *init)
template<class U , class StrideTag >
void | allocate (pointer &ptr, MultiArrayView< N, U, StrideTag > const &init)
void | deallocate (pointer &ptr, difference_type_1 s)

## Protected Attributes

allocator_type | m_alloc

## Detailed Description

### template<unsigned int N, class T, class A>
class vigra::MultiArray< N, T, A >

Main `MultiArray` class containing the memory management.

This class inherits the interface of MultiArrayView, and implements the memory ownership. MultiArray's are always unstrided, striding them creates a MultiArrayView.

The template parameters are as follows

N: the array dimension
T: the type of the array elements
A: the allocator used for internal storage management
(default: std::allocator<T>)

#include <vigra/multi_array.hxx>
Namespace: vigra

Examples:
  boundarytensor.cxx, composite.cxx, convert.cxx, dissolve.cxx, edge.cxx, imageExportInfo_tutorial.cxx, imageIO_tutorial.cxx, invert.cxx, invert_tutorial.cxx, mirror_tutorial.cxx, palette.cxx, resize.cxx, smooth.cxx, smooth_convolve.cxx, smooth_explicitly.cxx, subimage.cxx, subimage_tutorial.cxx, total_variation.cxx, transpose.cxx, transpose_image_tutorial.cxx, voronoi.cxx, and watershed.cxx.

## Member Typedef Documentation

## ◆ view_type

typedef MultiArrayView<N, typename vigra::detail::ResolveMultiband<T>::type, typename vigra::detail::ResolveMultiband<T>::Stride> view_type

the view type associated with this array.

## ◆ allocator_type

typedef A allocator_type

the allocator type used to allocate the memory

## ◆ matrix_type

typedef MultiArray<N, T, A> matrix_type

the matrix type associated with this array.

## ◆ value_type

typedef view_type::value_type value_type

the array's value type

## ◆ pointer

typedef view_type::pointer pointer

pointer type

## ◆ const_pointer

typedef view_type::const_pointer const_pointer

const pointer type

## ◆ reference

typedef view_type::reference reference

reference type (result of operator[])

## ◆ const_reference

typedef view_type::const_reference const_reference

const reference type (result of operator[] const)

## ◆ size_type

typedef view_type::size_type size_type

size type

## ◆ difference_type

typedef view_type::difference_type difference_type

difference type (used for multi-dimensional offsets and indices)

## ◆ difference_type_1

typedef view_type::difference_type_1 difference_type_1

difference and index type for a single dimension

## ◆ traverser

typedef view_type::traverser traverser

traverser type

## ◆ const_traverser

typedef view_type::const_traverser const_traverser

traverser type to const data

## ◆ iterator

typedef view_type::iterator iterator

sequential (random access) iterator typesequential (random access) const iterator typesequential (random access) iterator type

## ◆ const_iterator

typedef view_type::const_iterator const_iterator

sequential (random access) const iterator type

## Constructor & Destructor Documentation

## ◆ MultiArray() [1/11]

MultiArray | ( |  | ) |

default constructor

## ◆ MultiArray() [2/11]

MultiArray | ( | allocator_type const & | alloc | ) |

construct with given allocator

## ◆ MultiArray() [3/11]

MultiArray | ( | difference_type_1 | length,
|  | allocator_type const & | alloc = `allocator_type()`
| ) |  |

explicit

construct with given length

Use only for 1-dimensional arrays (`N==1`).

## ◆ MultiArray() [4/11]

MultiArray | ( | difference_type_1 | width,
|  | difference_type_1 | height,
|  | allocator_type const & | alloc = `allocator_type()`
| ) |  |

construct with given width and height

Use only for 2-dimensional arrays (`N==2`).

## ◆ MultiArray() [5/11]

MultiArray | ( | const difference_type & | shape,
|  | allocator_type const & | alloc = `allocator_type()`
| ) |  |

explicit

construct with given shape

## ◆ MultiArray() [6/11]

MultiArray | ( | const difference_type & | shape,
|  | const_reference | init,
|  | allocator_type const & | alloc = `allocator_type()`
| ) |  |

construct from shape with an initial value

## ◆ MultiArray() [7/11]

MultiArray | ( | const difference_type & | shape,
|  | MultiArrayInitializationTag | init,
|  | allocator_type const & | alloc = `allocator_type()`
| ) |  |

construct from shape and initialize with a linear sequence in scan order (i.e. first pixel gets value 0, second on gets value 1 and so on).

## ◆ MultiArray() [8/11]

MultiArray | ( | const difference_type & | shape,
|  | const_pointer | init,
|  | allocator_type const & | alloc = `allocator_type()`
| ) |  |

construct from shape and copy values from the given array

## ◆ MultiArray() [9/11]

MultiArray | ( | const MultiArray< N, T, A > & | rhs | ) |

copy constructor

## ◆ MultiArray() [10/11]

MultiArray | ( | multi_math::MultiMathOperand< Expression > const & | rhs,
|  | allocator_type const & | alloc = `allocator_type()`
| ) |  |

constructor from an array expression

## ◆ MultiArray() [11/11]

MultiArray | ( | const MultiArrayView< N, U, StrideTag > & | rhs,
|  | allocator_type const & | alloc = `allocator_type()`
| ) |  |

construct by copying from a MultiArrayView

## ◆ ~MultiArray()

~MultiArray | ( |  | ) |

destructor

## Member Function Documentation

## ◆ allocate() [1/3]

void allocate | ( | pointer & | ptr,
|  | difference_type_1 | s,
|  | const_reference | init
| ) |  |

protected

allocate memory for s pixels, write its address into the given pointer and initialize the pixels with init.

## ◆ allocate() [2/3]

void allocate | ( | pointer & | ptr,
|  | difference_type_1 | s,
|  | U const * | init
| ) |  |

protected

allocate memory for s pixels, write its address into the given pointer and initialize the linearized pixels to the values of init.

## ◆ allocate() [3/3]

void allocate | ( | pointer & | ptr,
|  | MultiArrayView< N, U, StrideTag > const & | init
| ) |  |

protected

allocate memory, write its address into the given pointer and initialize it by copying the data from the given MultiArrayView.

## ◆ deallocate()

void deallocate | ( | pointer & | ptr,
|  | difference_type_1 | s
| ) |  |

protected

deallocate the memory (of length s) starting at the given address.

## ◆ operator=() [1/4]

MultiArray& operator= | ( | const MultiArray< N, T, A > & | rhs | ) |

assignment.
If the size of rhs is the same as the left-hand side arrays's old size, only the data are copied. Otherwise, new storage is allocated, which invalidates all objects (array views, iterators) depending on the lhs array.

## ◆ operator=() [2/4]

MultiArray& operator= | ( | const MultiArrayView< N, U, StrideTag > & | rhs | ) |

assignment from arbitrary MultiArrayView.
If the size of rhs is the same as the left-hand side arrays's old size, only the data are copied. Otherwise, new storage is allocated, which invalidates all objects (array views, iterators) depending on the lhs array.

## ◆ operator=() [3/4]

MultiArray& operator= | ( | value_type const & | v | ) |

assignment from scalar.
Equivalent to MultiArray::init(v).

## ◆ operator+=() [1/3]

MultiArray& operator+= | ( | const MultiArrayView< N, U, StrideTag > & | rhs | ) |

Add-assignment from arbitrary MultiArrayView. Fails with `PreconditionViolation` exception when the shapes do not match. If the left array has no data (hasData() is false), this function is equivalent to a normal assignment (i.e. an empty array is interpreted as a zero-array of appropriate size).

## ◆ operator-=() [1/3]

MultiArray& operator-= | ( | const MultiArrayView< N, U, StrideTag > & | rhs | ) |

Subtract-assignment from arbitrary MultiArrayView. Fails with `PreconditionViolation` exception when the shapes do not match. If the left array has no data (hasData() is false), this function is equivalent to an assignment of the negated rhs (i.e. an empty array is interpreted as a zero-array of appropriate size).

## ◆ operator*=() [1/3]

MultiArray& operator*= | ( | const MultiArrayView< N, U, StrideTag > & | rhs | ) |

Multiply-assignment from arbitrary MultiArrayView. Fails with `PreconditionViolation` exception when the shapes do not match. If the left array has no data (hasData() is false), this function is equivalent to reshape(rhs.shape()) with zero initialisation (i.e. an empty array is interpreted as a zero-array of appropriate size).

## ◆ operator/=() [1/3]

MultiArray& operator/= | ( | const MultiArrayView< N, U, StrideTag > & | rhs | ) |

Divide-assignment from arbitrary MultiArrayView. Fails with `PreconditionViolation` exception when the shapes do not match. If the left array has no data (hasData() is false), this function is equivalent to reshape(rhs.shape()) with zero initialisation (i.e. an empty array is interpreted as a zero-array of appropriate size).

## ◆ operator+=() [2/3]

MultiArray& operator+= | ( | const T & | rhs | ) |

Add-assignment of a scalar.

## ◆ operator-=() [2/3]

MultiArray& operator-= | ( | const T & | rhs | ) |

Subtract-assignment of a scalar.

## ◆ operator*=() [2/3]

MultiArray& operator*= | ( | const T & | rhs | ) |

Multiply-assignment of a scalar.

## ◆ operator/=() [2/3]

MultiArray& operator/= | ( | const T & | rhs | ) |

Divide-assignment of a scalar.

## ◆ operator=() [4/4]

MultiArray& operator= | ( | multi_math::MultiMathOperand< Expression > const & | rhs | ) |

Assignment of an array expression. Fails with `PreconditionViolation` exception when the shapes do not match.

## ◆ operator+=() [3/3]

MultiArray& operator+= | ( | multi_math::MultiMathOperand< Expression > const & | rhs | ) |

Add-assignment of an array expression. Fails with `PreconditionViolation` exception when the shapes do not match.

## ◆ operator-=() [3/3]

MultiArray& operator-= | ( | multi_math::MultiMathOperand< Expression > const & | rhs | ) |

Subtract-assignment of an array expression. Fails with `PreconditionViolation` exception when the shapes do not match.

## ◆ operator*=() [3/3]

MultiArray& operator*= | ( | multi_math::MultiMathOperand< Expression > const & | rhs | ) |

Multiply-assignment of an array expression. Fails with `PreconditionViolation` exception when the shapes do not match.

## ◆ operator/=() [3/3]

MultiArray& operator/= | ( | multi_math::MultiMathOperand< Expression > const & | rhs | ) |

Divide-assignment of an array expression. Fails with `PreconditionViolation` exception when the shapes do not match.

## ◆ init()

MultiArray& init | ( | const U & | init | ) |

init elements with a constant

## ◆ reshape() [1/2]

void reshape | ( | const difference_type & | shape | ) |

Allocate new memory with the given shape and initialize with zeros.
Note: this operation invalidates all dependent objects (array views and iterators)

## ◆ reshape() [2/2]

void reshape | ( | const difference_type & | shape,
|  | const_reference | init
| ) |  |

Allocate new memory with the given shape and initialize it with the given value.
Note: this operation invalidates all dependent objects (array views and iterators)

## ◆ swap()

void swap | ( | MultiArray< N, T, A > & | other | ) |

Swap the contents with another MultiArray. This is fast, because no data are copied, but only pointers and shapes swapped. Note: this operation invalidates all dependent objects (array views and iterators)

## ◆ allocator()

allocator_type const& allocator | ( |  | ) | const

sequential iterator pointing to the first array element.sequential iterator pointing beyond the last array element.sequential const iterator pointing to the first array element.sequential const iterator pointing beyond the last array element.get the allocator.

## Member Data Documentation

## ◆ m_alloc

allocator_type m_alloc

protected

the allocator used to allocate the memory

The documentation for this class was generated from the following file:

- vigra/multi_array.hxx

© Ullrich Köthe (ullrich.koethe@iwr.uni-heidelberg.de) Heidelberg Collaboratory for Image Processing, University of Heidelberg, Germany | html generated using doxygen and Python vigra 1.11.0