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�

d�cp+���dZddlmZddlmZmZddlmZmZm	Z	gd�Z
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Functions which are common and require SciPy Base and Level 1 SciPy
(special, linalg)
�)�_deprecated)�_central_diff_weights�_derivative)�array�
frombuffer�load)�central_diff_weights�
derivative�ascent�face�electrocardiogramz�scipy.misc.central_diff_weights is deprecated in SciPy v1.10.0; and will be completely removed in SciPy v1.12.0. You may consider using findiff: https://github.com/maroba/findiff or numdifftools: https://github.com/pbrod/numdifftools)�msg�c�"�t||��S)a<
    Return weights for an Np-point central derivative.

    Assumes equally-spaced function points.

    If weights are in the vector w, then
    derivative is w[0] * f(x-ho*dx) + ... + w[-1] * f(x+h0*dx)

    .. deprecated:: 1.10.0
        `central_diff_weights` has been deprecated from
        `scipy.misc.central_diff_weights` in SciPy 1.10.0 and
        it will be completely removed in SciPy 1.12.0.
        You may consider using
        findiff: https://github.com/maroba/findiff or
        numdifftools: https://github.com/pbrod/numdifftools

    Parameters
    ----------
    Np : int
        Number of points for the central derivative.
    ndiv : int, optional
        Number of divisions. Default is 1.

    Returns
    -------
    w : ndarray
        Weights for an Np-point central derivative. Its size is `Np`.

    Notes
    -----
    Can be inaccurate for a large number of points.

    Examples
    --------
    We can calculate a derivative value of a function.

    >>> from scipy.misc import central_diff_weights
    >>> def f(x):
    ...     return 2 * x**2 + 3
    >>> x = 3.0 # derivative point
    >>> h = 0.1 # differential step
    >>> Np = 3 # point number for central derivative
    >>> weights = central_diff_weights(Np) # weights for first derivative
    >>> vals = [f(x + (i - Np/2) * h) for i in range(Np)]
    >>> sum(w * v for (w, v) in zip(weights, vals))/h
    11.79999999999998

    This value is close to the analytical solution:
    f'(x) = 4x, so f'(3) = 12

    References
    ----------
    .. [1] https://en.wikipedia.org/wiki/Finite_difference

    )r)�Np�ndivs  �4/usr/lib/python3/dist-packages/scipy/misc/_common.pyr	r	s��z!��T�*�*�*�z�scipy.misc.derivative is deprecated in SciPy v1.10.0; and will be completely removed in SciPy v1.12.0. You may consider using findiff: https://github.com/maroba/findiff or numdifftools: https://github.com/pbrod/numdifftools��?��c�*�t||||||��S)aq
    Find the nth derivative of a function at a point.

    Given a function, use a central difference formula with spacing `dx` to
    compute the nth derivative at `x0`.

    .. deprecated:: 1.10.0
        `derivative` has been deprecated from `scipy.misc.derivative`
        in SciPy 1.10.0 and it will be completely removed in SciPy 1.12.0.
        You may consider using
        findiff: https://github.com/maroba/findiff or
        numdifftools: https://github.com/pbrod/numdifftools

    Parameters
    ----------
    func : function
        Input function.
    x0 : float
        The point at which the nth derivative is found.
    dx : float, optional
        Spacing.
    n : int, optional
        Order of the derivative. Default is 1.
    args : tuple, optional
        Arguments
    order : int, optional
        Number of points to use, must be odd.

    Notes
    -----
    Decreasing the step size too small can result in round-off error.

    Examples
    --------
    >>> from scipy.misc import derivative
    >>> def f(x):
    ...     return x**3 + x**2
    >>> derivative(f, 1.0, dx=1e-6)
    4.9999999999217337

    )r)�func�x0�dx�n�args�orders      rr
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Os��^�t�R��Q��e�4�4�4rz�scipy.misc.ascent has been deprecated in SciPy v1.10.0; and will be completely removed in SciPy v1.12.0. Dataset methods have moved into the scipy.datasets module. Use scipy.datasets.ascent instead.c��ddl}ddl}|j�|j�t
��d��}t
|d��5}t|�|����}ddd��n#1swxYwY|S)a�
    Get an 8-bit grayscale bit-depth, 512 x 512 derived image for easy use in demos

    The image is derived from accent-to-the-top.jpg at
    http://www.public-domain-image.com/people-public-domain-images-pictures/

    .. deprecated:: 1.10.0
        `ascent` has been deprecated from `scipy.misc.ascent`
        in SciPy 1.10.0 and it will be completely removed in SciPy 1.12.0.
        Dataset methods have moved into the `scipy.datasets` module.
        Use `scipy.datasets.ascent` instead.

    Parameters
    ----------
    None

    Returns
    -------
    ascent : ndarray
       convenient image to use for testing and demonstration

    Examples
    --------
    >>> import scipy.misc
    >>> ascent = scipy.misc.ascent()
    >>> ascent.shape
    (512, 512)
    >>> ascent.max()
    255

    >>> import matplotlib.pyplot as plt
    >>> plt.gray()
    >>> plt.imshow(ascent)
    >>> plt.show()

    rNz
ascent.dat�rb)	�pickle�os�path�join�dirname�__file__�openrr)r!r"�fname�frs     rrr�s���R�M�M�M�
�I�I�I��G�L�L������2�2�<�@�@�E�	
�e�T�	�	�'�a��v�{�{�1�~�~�&�&��'�'�'�'�'�'�'�'�'�'�'����'�'�'�'��Ms�#B�B�Bz�scipy.misc.face has been deprecated in SciPy v1.10.0; and will be completely removed in SciPy v1.12.0. Dataset methods have moved into the scipy.datasets module. Use scipy.datasets.face instead.Fc���ddl}ddl}t|j�|j�t��d��d��5}|���}ddd��n#1swxYwY|�|��}t|d���}d|_
|durKd	|dd�dd�dfzd
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fzz�d��}|S)a�
    Get a 1024 x 768, color image of a raccoon face.

    raccoon-procyon-lotor.jpg at http://www.public-domain-image.com

    .. deprecated:: 1.10.0
        `face` has been deprecated from `scipy.misc.face`
        in SciPy 1.10.0 and it will be completely removed in SciPy 1.12.0.
        Dataset methods have moved into the `scipy.datasets` module.
        Use `scipy.datasets.face` instead.

    Parameters
    ----------
    gray : bool, optional
        If True return 8-bit grey-scale image, otherwise return a color image

    Returns
    -------
    face : ndarray
        image of a racoon face

    Examples
    --------
    >>> import scipy.misc
    >>> face = scipy.misc.face()
    >>> face.shape
    (768, 1024, 3)
    >>> face.max()
    255
    >>> face.dtype
    dtype('uint8')

    >>> import matplotlib.pyplot as plt
    >>> plt.gray()
    >>> plt.imshow(face)
    >>> plt.show()

    rNzface.datr �uint8)�dtype)i�rTg�z�G��?g���Q��?rg�Q���?�)�bz2r"r'r#r$r%r&�read�
decompressr�shape�astype)�grayr/r"r)�rawdata�datars       rrr�s?��V�J�J�J�
�I�I�I�	
�b�g�l�l�2�7�?�?�8�4�4�j�A�A�4�	H�	H��A��&�&�(�(���������������������>�>�'�"�"�D��d�'�*�*�*�D��D�J��t�|�|��t�A�A�A�a�a�a��E�{�"�T�D����1�1�1�Q��K�%7�7�$��a�a�a����!�e��:L�L�T�T�U\�]�]���Ks�A0�0A4�7A4z�scipy.misc.electrocardiogram has been deprecated in SciPy v1.10.0; and will be completely removed in SciPy v1.12.0. Dataset methods have moved into the scipy.datasets module. Use scipy.datasets.electrocardiogram instead.c��ddl}|j�|j�t��d��}t|��5}|d�t��}ddd��n#1swxYwY|dz
dz}|S)a�

    Load an electrocardiogram as an example for a 1-D signal.

    The returned signal is a 5 minute long electrocardiogram (ECG), a medical
    recording of the heart's electrical activity, sampled at 360 Hz.

    .. deprecated:: 1.10.0
        `electrocardiogram` has been deprecated from
        `scipy.misc.electrocardiogram` in SciPy 1.10.0 and it will be
        completely removed in SciPy 1.12.0.
        Dataset methods have moved into the `scipy.datasets` module.
        Use `scipy.datasets.electrocardiogram` instead.

    Returns
    -------
    ecg : ndarray
        The electrocardiogram in millivolt (mV) sampled at 360 Hz.

    Notes
    -----
    The provided signal is an excerpt (19:35 to 24:35) from the `record 208`_
    (lead MLII) provided by the MIT-BIH Arrhythmia Database [1]_ on
    PhysioNet [2]_. The excerpt includes noise induced artifacts, typical
    heartbeats as well as pathological changes.

    .. _record 208: https://physionet.org/physiobank/database/html/mitdbdir/records.htm#208

    .. versionadded:: 1.1.0

    References
    ----------
    .. [1] Moody GB, Mark RG. The impact of the MIT-BIH Arrhythmia Database.
           IEEE Eng in Med and Biol 20(3):45-50 (May-June 2001).
           (PMID: 11446209); :doi:`10.13026/C2F305`
    .. [2] Goldberger AL, Amaral LAN, Glass L, Hausdorff JM, Ivanov PCh,
           Mark RG, Mietus JE, Moody GB, Peng C-K, Stanley HE. PhysioBank,
           PhysioToolkit, and PhysioNet: Components of a New Research Resource
           for Complex Physiologic Signals. Circulation 101(23):e215-e220;
           :doi:`10.1161/01.CIR.101.23.e215`

    Examples
    --------
    >>> from scipy.misc import electrocardiogram
    >>> ecg = electrocardiogram()
    >>> ecg
    array([-0.245, -0.215, -0.185, ..., -0.405, -0.395, -0.385])
    >>> ecg.shape, ecg.mean(), ecg.std()
    ((108000,), -0.16510875, 0.5992473991177294)

    As stated the signal features several areas with a different morphology.
    E.g., the first few seconds show the electrical activity of a heart in
    normal sinus rhythm as seen below.

    >>> import numpy as np
    >>> import matplotlib.pyplot as plt
    >>> fs = 360
    >>> time = np.arange(ecg.size) / fs
    >>> plt.plot(time, ecg)
    >>> plt.xlabel("time in s")
    >>> plt.ylabel("ECG in mV")
    >>> plt.xlim(9, 10.2)
    >>> plt.ylim(-1, 1.5)
    >>> plt.show()

    After second 16, however, the first premature ventricular contractions, also
    called extrasystoles, appear. These have a different morphology compared to
    typical heartbeats. The difference can easily be observed in the following
    plot.

    >>> plt.plot(time, ecg)
    >>> plt.xlabel("time in s")
    >>> plt.ylabel("ECG in mV")
    >>> plt.xlim(46.5, 50)
    >>> plt.ylim(-2, 1.5)
    >>> plt.show()

    At several points large artifacts disturb the recording, e.g.:

    >>> plt.plot(time, ecg)
    >>> plt.xlabel("time in s")
    >>> plt.ylabel("ECG in mV")
    >>> plt.xlim(207, 215)
    >>> plt.ylim(-2, 3.5)
    >>> plt.show()

    Finally, examining the power spectrum reveals that most of the biosignal is
    made up of lower frequencies. At 60 Hz the noise induced by the mains
    electricity can be clearly observed.

    >>> from scipy.signal import welch
    >>> f, Pxx = welch(ecg, fs=fs, nperseg=2048, scaling="spectrum")
    >>> plt.semilogy(f, Pxx)
    >>> plt.xlabel("Frequency in Hz")
    >>> plt.ylabel("Power spectrum of the ECG in mV**2")
    >>> plt.xlim(f[[0, -1]])
    >>> plt.show()
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