latools/helpers/helpers.py
def calc_grads(x, dat, keys=None, win=5):
    """
    Calculate gradients of values in dat.
    
    Parameters
    ----------
    x : array like
        Independent variable for items in dat.
    dat : dict
        {key: dependent_variable} pairs
    keys : str or array-like
        Which keys in dict to calculate the gradient of.
    win : int
        The side of the rolling window for gradient calculation

    Returns
    -------
    dict of gradients
    """
    if keys is None:
        keys = dat.keys()

    def grad(xy):
        if (~np.isnan(xy)).all():
            try:
                return np.polyfit(xy[0], xy[1], 1)[0]
            except ValueError:
                return np.nan
        else:
            return np.nan

    xs = rolling_window(x, win, pad='repeat_ends')
    grads = Bunch()
    for k in keys:
        d = nominal_values(rolling_window(dat[k], win, pad='repeat_ends'))

        grads[k] = np.array(list(map(grad, zip(xs, d))))

    return grads
def calc_grads(x, dat, keys=None, win=5):
    """
    Calculate gradients of values in dat.
    
    Parameters
    ----------
    x : array like
        Independent variable for items in dat.
    dat : dict
        {key: dependent_variable} pairs
    keys : str or array-like
        Which keys in dict to calculate the gradient of.
    win : int
        The side of the rolling window for gradient calculation

    Returns
    -------
    dict of gradients
    """
    if keys is None:
        keys = dat.keys()

    def grad(xy):
        if (~np.isnan(xy)).all():
            try:
                return np.polyfit(xy[0], xy[1], 1)[0]
            except ValueError:
                return np.nan
        else:
            return np.nan

    xs = rolling_window(x, win, pad='repeat_ends')
    grads = Bunch()
    for k in keys:
        d = nominal_values(rolling_window(dat[k], win, pad='repeat_ends'))

        grads[k] = np.array(list(map(grad, zip(xs, d))))

    return grads
def calc_grads ( x , dat , keys = None , win = 5 ) : if keys is None : keys = dat . keys ( ) def grad ( xy ) : if ( ~ np . isnan ( xy ) ) . all ( ) : try : return np . polyfit ( xy [ 0 ] , xy [ 1 ] , 1 ) [ 0 ] except ValueError : return np . nan else : return np . nan xs = rolling_window ( x , win , pad = 'repeat_ends' ) grads = Bunch ( ) for k in keys : d = nominal_values ( rolling_window ( dat [ k ] , win , pad = 'repeat_ends' ) ) grads [ k ] = np . array ( list ( map ( grad , zip ( xs , d ) ) ) ) return grads
Calculate gradients of values in dat.
    
    Parameters
    ----------
    x : array like
        Independent variable for items in dat.
    dat : dict
        {key: dependent_variable} pairs
    keys : str or array-like
        Which keys in dict to calculate the gradient of.
    win : int
        The side of the rolling window for gradient calculation

    Returns
    -------
    dict of gradients
Calculate gradients of values in dat . Parameters ---------- x : array like Independent variable for items in dat . dat : dict { key : dependent_variable } pairs keys : str or array - like Which keys in dict to calculate the gradient of . win : int The side of the rolling window for gradient calculation