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Module « numpy.matlib »

Classe « matrix »

Informations générales

Héritage

builtins.object
    ndarray
        matrix

Définition

class matrix(ndarray):

help(matrix)

matrix(data, dtype=None, copy=True)

Returns a matrix from an array-like object, or from a string of data.

A matrix is a specialized 2-D array that retains its 2-D nature
through operations.  It has certain special operators, such as ``*``
(matrix multiplication) and ``**`` (matrix power).

.. note:: It is no longer recommended to use this class, even for linear
          algebra. Instead use regular arrays. The class may be removed
          in the future.

Parameters
----------
data : array_like or string
   If `data` is a string, it is interpreted as a matrix with commas
   or spaces separating columns, and semicolons separating rows.
dtype : data-type
   Data-type of the output matrix.
copy : bool
   If `data` is already an `ndarray`, then this flag determines
   whether the data is copied (the default), or whether a view is
   constructed.

See Also
--------
array

Examples
--------
>>> import numpy as np
>>> a = np.matrix('1 2; 3 4')
>>> a
matrix([[1, 2],
        [3, 4]])

>>> np.matrix([[1, 2], [3, 4]])
matrix([[1, 2],
        [3, 4]])

Constructeur(s)

Signature du constructeur	Description
__new__(subtype, data, dtype=None, copy=True)
__init__(self, /, *args, **kwargs)	Initialize self. See help(type(self)) for accurate signature. [extrait de __init__.__doc__]

Liste des attributs statiques

Attributs statiques hérités de la classe ndarray

base, ctypes, data, device, dtype, flags, flat, imag, itemset, itemsize, mT, nbytes, ndim, newbyteorder, ptp, real, shape, size, strides, T

Opérateurs hérités de la classe ndarray

__add__, __and__, __contains__, __delitem__, __eq__, __floordiv__, __ge__, __gt__, __iadd__, __iand__, __ifloordiv__, __ilshift__, __imatmul__, __imod__, __invert__, __ior__, __irshift__, __isub__, __itruediv__, __ixor__, __le__, __lshift__, __lt__, __matmul__, __mod__, __ne__, __neg__, __or__, __pos__, __radd__, __rand__, __rfloordiv__, __rlshift__, __rmod__, __ror__, __rrshift__, __rshift__, __rsub__, __rtruediv__, __rxor__, __setitem__, __sub__, __truediv__, __xor__

Opérateurs hérités de la classe object

__eq__, __ge__, __gt__, __le__, __lt__, __ne__

Méthodes héritées de la classe ndarray

__abs__, __array__, __array_function__, __array_namespace__, __array_ufunc__, __array_wrap__, __bool__, __buffer__, __complex__, __copy__, __deepcopy__, __divmod__, __dlpack__, __dlpack_device__, __float__, __format__, __index__, __init_subclass__, __int__, __iter__, __len__, __rdivmod__, __reduce__, __reduce_ex__, __repr__, __rmatmul__, __setstate__, __sizeof__, __str__, __subclasshook__, argpartition, argsort, astype, byteswap, choose, clip, compress, conj, conjugate, copy, cumprod, cumsum, diagonal, dot, dump, dumps, fill, getfield, item, nonzero, partition, put, repeat, reshape, resize, round, searchsorted, setfield, setflags, sort, swapaxes, take, to_device, tobytes, tofile, tostring, trace, transpose, view

Méthodes héritées de la classe object

__delattr__, __dir__, __format__, __getattribute__, __getstate__, __hash__, __init_subclass__, __reduce__, __reduce_ex__, __repr__, __setattr__, __sizeof__, __str__, __subclasshook__

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