Numpy matlib zeros ones 创建全0 全1矩阵
【摘要】 所属的课程名称及链接[AI基础课程--常用框架工具]环境信息* ModelArts * Notebook - Multi-Engine 2.0 (python3) * JupyterLab - Notebook - Conda-python3 * numpy 1.19.1Numpy matlib zeros ones 创建全0 全1矩阵import numpy as npi...
所属的课程名称及链接
环境信息
- * ModelArts
- * Notebook - Multi-Engine 2.0 (python3)
- * JupyterLab - Notebook - Conda-python3
- * numpy 1.19.1
- * JupyterLab - Notebook - Conda-python3
- * Notebook - Multi-Engine 2.0 (python3)
Numpy matlib zeros ones 创建全0 全1矩阵
import numpy as np
import numpy.matlib
temp = np.matlib.zeros((2,3)) # 全0矩阵
print("type(temp)",type(temp))
print("temp",temp)
print("----------")
temp = np.matlib.ones((4,5)) # 全1矩阵
print("type(temp)",type(temp))
print("temp",temp)type(temp) <class 'numpy.matrix'>
temp [[0. 0. 0.]
[0. 0. 0.]]
----------
type(temp) <class 'numpy.matrix'>
temp [[1. 1. 1. 1. 1.]
[1. 1. 1. 1. 1.]
[1. 1. 1. 1. 1.]
[1. 1. 1. 1. 1.]]help
help(np.matlib.zeros)
Help on function zeros in module numpy.matlib:
zeros(shape, dtype=None, order='C')
Return a matrix of given shape and type, filled with zeros.
Parameters
----------
shape : int or sequence of ints
Shape of the matrix
dtype : data-type, optional
The desired data-type for the matrix, default is float.
order : {'C', 'F'}, optional
Whether to store the result in C- or Fortran-contiguous order,
default is 'C'.
Returns
-------
out : matrix
Zero matrix of given shape, dtype, and order.
See Also
--------
numpy.zeros : Equivalent array function.
matlib.ones : Return a matrix of ones.
Notes
-----
If `shape` has length one i.e. ``(N,)``, or is a scalar ``N``,
`out` becomes a single row matrix of shape ``(1,N)``.
Examples
--------
>>> import numpy.matlib
>>> np.matlib.zeros((2, 3))
matrix([[0., 0., 0.],
[0., 0., 0.]])
>>> np.matlib.zeros(2)
matrix([[0., 0.]])help(np.matlib.ones)
Help on function ones in module numpy.matlib:
ones(shape, dtype=None, order='C')
Matrix of ones.
Return a matrix of given shape and type, filled with ones.
Parameters
----------
shape : {sequence of ints, int}
Shape of the matrix
dtype : data-type, optional
The desired data-type for the matrix, default is np.float64.
order : {'C', 'F'}, optional
Whether to store matrix in C- or Fortran-contiguous order,
default is 'C'.
Returns
-------
out : matrix
Matrix of ones of given shape, dtype, and order.
See Also
--------
ones : Array of ones.
matlib.zeros : Zero matrix.
Notes
-----
If `shape` has length one i.e. ``(N,)``, or is a scalar ``N``,
`out` becomes a single row matrix of shape ``(1,N)``.
Examples
--------
>>> np.matlib.ones((2,3))
matrix([[1., 1., 1.],
[1., 1., 1.]])
>>> np.matlib.ones(2)
matrix([[1., 1.]])备注
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3. 沙箱实验、认证、论坛和直播，其中包含了许多优质的内容，推荐了解与学习。
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