Exemple #1
0
 def test_smartTimeTicksSubDay(self):
     """smartTimeTicks should give known output (regression)"""
     # hits all the different cases
     # else
     t1 = tb.linspace(datetime.datetime(2000, 1, 1),
                      datetime.datetime(2000, 1, 10), 20)
     Mtick, mtick, fmt = spacepy.plot.utils.smartTimeTicks(t1)
     self.assertEqual('%d %b', fmt.fmt)
     # elif nHours < 4:
     t1 = tb.linspace(datetime.datetime(2000, 1, 1),
                      datetime.datetime(2000, 1, 1, 1), 20)
     Mtick, mtick, fmt = spacepy.plot.utils.smartTimeTicks(t1)
     self.assertEqual('%H:%M UT', fmt.fmt)
     # elif nHours < 24:
     t1 = tb.linspace(datetime.datetime(2000, 1, 1),
                      datetime.datetime(2000, 1, 1, 13), 20)
     Mtick, mtick, fmt = spacepy.plot.utils.smartTimeTicks(t1)
     self.assertEqual('%H:%M UT', fmt.fmt)
     # elif nHours < 12:
     t1 = tb.linspace(datetime.datetime(2000, 1, 1),
                      datetime.datetime(2000, 1, 1, 11), 20)
     Mtick, mtick, fmt = spacepy.plot.utils.smartTimeTicks(t1)
     self.assertEqual('%H:%M UT', fmt.fmt)
     # if nHours < 1:
     t1 = tb.linspace(datetime.datetime(2000, 1, 1),
                      datetime.datetime(2000, 1, 1, 0, 30), 20)
     Mtick, mtick, fmt = spacepy.plot.utils.smartTimeTicks(t1)
     self.assertEqual('%H:%M UT', fmt.fmt)
Exemple #2
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 def test_linspace(self):
     """linspace should return know answer for known input"""
     try:
         from matplotlib.dates import date2num
     except ImportError:  # just pass if matplotlib is not installed
         return
     # should exactly match here since it is the same
     numpy.testing.assert_equal(tb.linspace(10, 100, 200), numpy.linspace(10,100, 200))
     t1 = datetime.datetime(2000, 1, 1)
     t2 = datetime.datetime(2000, 1, 10)
     real_ans = [datetime.datetime(2000, 1, 1, 0, 0),
          datetime.datetime(2000, 1, 3, 6, 0),
          datetime.datetime(2000, 1, 5, 12, 0),
          datetime.datetime(2000, 1, 7, 18, 0),
          datetime.datetime(2000, 1, 10, 0, 0)]
     ans = tb.linspace(t1, t2, 5)
     numpy.testing.assert_almost_equal(date2num(real_ans), date2num(ans) , 4)
Exemple #3
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 def test_linspace(self):
     """linspace should return know answer for known input"""
     try:
         from matplotlib.dates import date2num
     except ImportError:  # just pass if matplotlib is not installed
         return
     # should exactly match here since it is the same
     numpy.testing.assert_equal(tb.linspace(10, 100, 200), numpy.linspace(10,100, 200))
     t1 = datetime.datetime(2000, 1, 1)
     t2 = datetime.datetime(2000, 1, 10)
     real_ans = [datetime.datetime(2000, 1, 1, 0, 0),
          datetime.datetime(2000, 1, 3, 6, 0),
          datetime.datetime(2000, 1, 5, 12, 0),
          datetime.datetime(2000, 1, 7, 18, 0),
          datetime.datetime(2000, 1, 10, 0, 0)]
     ans = tb.linspace(t1, t2, 5)
     numpy.testing.assert_almost_equal(date2num(real_ans), date2num(ans) , 4)
Exemple #4
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 def test_smartTimeTicksLonger(self):
     """smartTimeTicks should give known output (regression)"""
     # elif nHours < 48:
     t1 = tb.linspace(datetime.datetime(2000, 1, 1), datetime.datetime(2000, 1, 2, 0, 30), 20)
     Mtick, mtick, fmt = spacepy.plot.utils.smartTimeTicks(t1)
     self.assertEqual('%H:%M UT', fmt.fmt)
     # elif nDays < 32:
     t1 = tb.linspace(datetime.datetime(2000, 1, 2), datetime.datetime(2000, 2, 1, 0, 30), 20)
     Mtick, mtick, fmt = spacepy.plot.utils.smartTimeTicks(t1)
     self.assertEqual('%d %b', fmt.fmt)
     # elif nDays < 731:
     t1 = tb.linspace(datetime.datetime(2000, 1, 2), datetime.datetime(2001, 2, 1, 0, 30), 20)
     Mtick, mtick, fmt = spacepy.plot.utils.smartTimeTicks(t1)
     self.assertEqual('%b %Y', fmt.fmt)
     # elif nDays >= 731:
     t1 = tb.linspace(datetime.datetime(2000, 1, 2), datetime.datetime(2010, 2, 1, 0, 30), 20)
     Mtick, mtick, fmt = spacepy.plot.utils.smartTimeTicks(t1)
     self.assertEqual('%Y', fmt.fmt)
Exemple #5
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 def test_smartTimeTicksLonger(self):
     """smartTimeTicks should give known output (regression)"""
     # elif nHours < 48:
     t1 = tb.linspace(datetime.datetime(2000, 1, 1), datetime.datetime(2000, 1, 2, 0, 30), 20)
     Mtick, mtick, fmt = spacepy.plot.utils.smartTimeTicks(t1)
     self.assertEqual('%H:%M UT', fmt.fmt)
     # elif nDays < 32:
     t1 = tb.linspace(datetime.datetime(2000, 1, 2), datetime.datetime(2000, 2, 1, 0, 30), 20)
     Mtick, mtick, fmt = spacepy.plot.utils.smartTimeTicks(t1)
     self.assertEqual('%d %b', fmt.fmt)
     # elif nDays < 731:
     t1 = tb.linspace(datetime.datetime(2000, 1, 2), datetime.datetime(2001, 2, 1, 0, 30), 20)
     Mtick, mtick, fmt = spacepy.plot.utils.smartTimeTicks(t1)
     self.assertEqual('%b %Y', fmt.fmt)
     # elif nDays >= 731:
     t1 = tb.linspace(datetime.datetime(2000, 1, 2), datetime.datetime(2010, 2, 1, 0, 30), 20)
     Mtick, mtick, fmt = spacepy.plot.utils.smartTimeTicks(t1)
     self.assertEqual('%Y', fmt.fmt)
Exemple #6
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 def test_smartTimeTicksSubDay(self):
     """smartTimeTicks should give known output (regression)"""
     # hits all the different cases
     # else
     t1 = tb.linspace(datetime.datetime(2000, 1, 1), datetime.datetime(2000, 1, 10), 20)
     Mtick, mtick, fmt = spacepy.plot.utils.smartTimeTicks(t1)
     self.assertEqual('%d %b', fmt.fmt)
     # elif nHours < 4:
     t1 = tb.linspace(datetime.datetime(2000, 1, 1), datetime.datetime(2000, 1, 1, 1), 20)
     Mtick, mtick, fmt = spacepy.plot.utils.smartTimeTicks(t1)
     self.assertEqual('%H:%M UT', fmt.fmt)
     # elif nHours < 24:
     t1 = tb.linspace(datetime.datetime(2000, 1, 1), datetime.datetime(2000, 1, 1, 13), 20)
     Mtick, mtick, fmt = spacepy.plot.utils.smartTimeTicks(t1)
     self.assertEqual('%H:%M UT', fmt.fmt)
     # elif nHours < 12:
     t1 = tb.linspace(datetime.datetime(2000, 1, 1), datetime.datetime(2000, 1, 1, 11), 20)
     Mtick, mtick, fmt = spacepy.plot.utils.smartTimeTicks(t1)
     self.assertEqual('%H:%M UT', fmt.fmt)
     # if nHours < 1:
     t1 = tb.linspace(datetime.datetime(2000, 1, 1), datetime.datetime(2000, 1, 1, 0, 30), 20)
     Mtick, mtick, fmt = spacepy.plot.utils.smartTimeTicks(t1)
     self.assertEqual('%H:%M UT', fmt.fmt)
Exemple #7
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 def test_linspace_bug(self):
     """This catches a linspace datetime bug with 0-d arrays (regression)"""
     try:
         from matplotlib.dates import date2num
     except ImportError:  # just pass if matplotlib is not installed
         return
     t1 = numpy.array(datetime.datetime(2000, 1, 1))
     t2 = numpy.array(datetime.datetime(2000, 1, 10))
     real_ans = [datetime.datetime(2000, 1, 1, 0, 0),
          datetime.datetime(2000, 1, 3, 6, 0),
          datetime.datetime(2000, 1, 5, 12, 0),
          datetime.datetime(2000, 1, 7, 18, 0),
          datetime.datetime(2000, 1, 10, 0, 0)]
     ans = tb.linspace(t1, t2, 5)
     numpy.testing.assert_almost_equal(date2num(real_ans), date2num(ans) , 4)
Exemple #8
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 def test_linspace_bug(self):
     """This catches a linspace datetime bug with 0-d arrays (regression)"""
     try:
         from matplotlib.dates import date2num
     except ImportError:  # just pass if matplotlib is not installed
         return
     t1 = numpy.array(datetime.datetime(2000, 1, 1))
     t2 = numpy.array(datetime.datetime(2000, 1, 10))
     real_ans = [datetime.datetime(2000, 1, 1, 0, 0),
          datetime.datetime(2000, 1, 3, 6, 0),
          datetime.datetime(2000, 1, 5, 12, 0),
          datetime.datetime(2000, 1, 7, 18, 0),
          datetime.datetime(2000, 1, 10, 0, 0)]
     ans = tb.linspace(t1, t2, 5)
     numpy.testing.assert_almost_equal(date2num(real_ans), date2num(ans) , 4)
Exemple #9
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    def __init__(self, data, **kwargs):
        """
        """
        super(spectrogram, self).__init__()
        ## setup a default dictionary to step through to set values from kwargs
        self.specSettings = dm.SpaceData()
        self.specSettings['variables'] = ['Epoch', 'Energy', 'Flux']
        self.specSettings['bins'] = None  # this is the linspace over the range with sqrt() of the len bins
        self.specSettings['xlim'] = None
        self.specSettings['ylim'] = None
        self.specSettings['zlim'] = None
        self.specSettings['extended_out'] = True
        self.specSettings['axisDates'] = False

        # if the key exists in kwargs replace setting with it, otherwise its an error
        for key in kwargs:
            if key not in self.specSettings:
                raise(KeyError('Invalid keyword specified ' + str(key)))
            self.specSettings[key] = kwargs[key]

        # check to see if the variables are in the spacedata
        for var in self.specSettings['variables']:
            if not var in data:  # TODO could check other capitalization
                raise(KeyError('"{0}" not found in the input data'.format(var) ))

        # if the variables are empty error and quit
        if len(data[self.specSettings['variables'][0]]) == 0:
            raise(ValueError('No {0} data passed in'.format(self.specSettings['variables'][0])))
        if len(data[self.specSettings['variables'][1]]) == 0:
            raise(ValueError('No {0} data passed in'.format(self.specSettings['variables'][1])))
        if len(data[self.specSettings['variables'][2]]) == 0:
            raise(ValueError('No {0} data passed in'.format(self.specSettings['variables'][2])))

        # set limits, keywords override those in the data
        #if (self.specSettings['xlim'] is None) and (self.specSettings['bins'] is None):
        if self.specSettings['xlim'] is None:
            try:
                if 'lim' in data[self.specSettings['variables'][0]].attrs:
                    self.specSettings['xlim'] = (data[self.specSettings['variables'][0]].attrs['lim'][0],
                                                data[self.specSettings['variables'][0]].attrs['lim'][1])
                else:
                    dum1 = np.min(data[self.specSettings['variables'][0]]).tolist() #TODO: tolist here is a workaround for a bug in
                    dum2 = np.max(data[self.specSettings['variables'][0]]).tolist() #      datamodel's min method
                    self.specSettings['xlim'] = (dum1, dum2)
            except AttributeError: # was a numpy array not dmarray
                self.specSettings['xlim'] = (np.min(data[self.specSettings['variables'][0]]),
                                            np.max(data[self.specSettings['variables'][0]]))
        if self.specSettings['ylim'] is None:
            try:
                if 'lim' in data[self.specSettings['variables'][1]].attrs:
                    self.specSettings['ylim'] = (data[self.specSettings['variables'][1]].attrs['lim'][0],
                                                data[self.specSettings['variables'][1]].attrs['lim'][1])
                else:
                    self.specSettings['ylim'] = (np.min(data[self.specSettings['variables'][1]]),
                                                np.max(data[self.specSettings['variables'][1]]))
            except AttributeError: # was a numpy array not dmarray
                self.specSettings['ylim'] = (np.min(data[self.specSettings['variables'][1]]),
                                            np.max(data[self.specSettings['variables'][1]]))
        if self.specSettings['zlim'] is None:
            try:
                if 'lim' in data[self.specSettings['variables'][2]].attrs:
                    self.specSettings['zlim'] = (data[self.specSettings['variables'][2]].attrs['lim'][0],
                                                data[self.specSettings['variables'][2]].attrs['lim'][1])
                else:
                    self.specSettings['zlim'] = (np.min(data[self.specSettings['variables'][2]]),
                                                np.max(data[self.specSettings['variables'][2]]))
            except AttributeError: # was a numpy array not dmarray
                self.specSettings['zlim'] = (np.min(data[self.specSettings['variables'][2]]),
                                            np.max(data[self.specSettings['variables'][2]]))

        # are the axes dates?
        forcedate = [False] * 2
        if isinstance(data[self.specSettings['variables'][0]][0], datetime.datetime):
            forcedate[0] = True
        if isinstance(data[self.specSettings['variables'][1]][0], datetime.datetime):
            forcedate[1] = True
        self.specSettings['axisDates'] = forcedate

        # set default bins
        if self.specSettings['bins'] is None:
            # since it is not set by keyword was it set in the datamodel?
            attr_bins = ['bins' in data[var].attrs for var in self.specSettings['variables']]
            if dm.dmarray(attr_bins[0:2]).all():
                self.specSettings['bins'] = [dm.dmarray(data[self.specSettings['variables'][0]].attrs['bins']),
                                             dm.dmarray(data[self.specSettings['variables'][1]].attrs['bins']),]
                # TODO this is not a hard extension to doing one with bins and one default
            else:
                # use the toolbox version of linspace so it works on dates
                self.specSettings['bins'] = [dm.dmarray(tb.linspace(self.specSettings['xlim'][0],
                                                 self.specSettings['xlim'][1],
                                                 np.sqrt(len(data[self.specSettings['variables'][0]])))),
                    dm.dmarray(tb.linspace(self.specSettings['ylim'][0],
                                                 self.specSettings['ylim'][1],
                                                 np.sqrt(len(data[self.specSettings['variables'][1]]))))]

        # copy all the used keys
        for key in self.specSettings['variables']:
            self[key] = data[key]
            try:
                self[key].attrs = data[key].attrs
            except:
                pass
        # do the spectrogram
        self._computeSpec()
Exemple #10
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    def __init__(self, data, **kwargs):
        """
        """
        super(spectrogram, self).__init__()
        ## setup a default dictionary to step through to set values from kwargs
        self.specSettings = dm.SpaceData()
        self.specSettings['variables'] = ['Epoch', 'Energy', 'Flux']
        self.specSettings[
            'bins'] = None  # this is the linspace over the range with sqrt() of the len bins
        self.specSettings['xlim'] = None
        self.specSettings['ylim'] = None
        self.specSettings['zlim'] = None
        self.specSettings['extended_out'] = True
        self.specSettings['axisDates'] = False

        # if the key exists in kwargs replace setting with it, otherwise its an error
        for key in kwargs:
            if key not in self.specSettings:
                raise (KeyError('Invalid keyword specified ' + str(key)))
            self.specSettings[key] = kwargs[key]

        # check to see if the variables are in the spacedata
        for var in self.specSettings['variables']:
            if not var in data:  # TODO could check other capitalization
                raise (KeyError(
                    '"{0}" not found in the input data'.format(var)))

        # if the variables are empty error and quit
        if len(data[self.specSettings['variables'][0]]) == 0:
            raise (ValueError('No {0} data passed in'.format(
                self.specSettings['variables'][0])))
        if len(data[self.specSettings['variables'][1]]) == 0:
            raise (ValueError('No {0} data passed in'.format(
                self.specSettings['variables'][1])))
        if len(data[self.specSettings['variables'][2]]) == 0:
            raise (ValueError('No {0} data passed in'.format(
                self.specSettings['variables'][2])))

        # set limits, keywords override those in the data
        #if (self.specSettings['xlim'] is None) and (self.specSettings['bins'] is None):
        if self.specSettings['xlim'] is None:
            try:
                if 'lim' in data[self.specSettings['variables'][0]].attrs:
                    self.specSettings['xlim'] = (
                        data[self.specSettings['variables']
                             [0]].attrs['lim'][0],
                        data[self.specSettings['variables'][0]].attrs['lim'][1]
                    )
                else:
                    dum1 = np.min(
                        data[self.specSettings['variables'][0]]).tolist(
                        )  #TODO: tolist here is a workaround for a bug in
                    dum2 = np.max(
                        data[self.specSettings['variables']
                             [0]]).tolist()  #      datamodel's min method
                    self.specSettings['xlim'] = (dum1, dum2)
            except AttributeError:  # was a numpy array not dmarray
                self.specSettings['xlim'] = (
                    np.min(data[self.specSettings['variables'][0]]),
                    np.max(data[self.specSettings['variables'][0]]))
        if self.specSettings['ylim'] is None:
            try:
                if 'lim' in data[self.specSettings['variables'][1]].attrs:
                    self.specSettings['ylim'] = (
                        data[self.specSettings['variables']
                             [1]].attrs['lim'][0],
                        data[self.specSettings['variables'][1]].attrs['lim'][1]
                    )
                else:
                    self.specSettings['ylim'] = (
                        np.min(data[self.specSettings['variables'][1]]),
                        np.max(data[self.specSettings['variables'][1]]))
            except AttributeError:  # was a numpy array not dmarray
                self.specSettings['ylim'] = (
                    np.min(data[self.specSettings['variables'][1]]),
                    np.max(data[self.specSettings['variables'][1]]))
        if self.specSettings['zlim'] is None:
            try:
                if 'lim' in data[self.specSettings['variables'][2]].attrs:
                    self.specSettings['zlim'] = (
                        data[self.specSettings['variables']
                             [2]].attrs['lim'][0],
                        data[self.specSettings['variables'][2]].attrs['lim'][1]
                    )
                else:
                    self.specSettings['zlim'] = (
                        np.min(data[self.specSettings['variables'][2]]),
                        np.max(data[self.specSettings['variables'][2]]))
            except AttributeError:  # was a numpy array not dmarray
                self.specSettings['zlim'] = (
                    np.min(data[self.specSettings['variables'][2]]),
                    np.max(data[self.specSettings['variables'][2]]))

        # are the axes dates?
        forcedate = [False] * 2
        if isinstance(data[self.specSettings['variables'][0]][0],
                      datetime.datetime):
            forcedate[0] = True
        if isinstance(data[self.specSettings['variables'][1]][0],
                      datetime.datetime):
            forcedate[1] = True
        self.specSettings['axisDates'] = forcedate

        # set default bins
        if self.specSettings['bins'] is None:
            # since it is not set by keyword was it set in the datamodel?
            attr_bins = [
                'bins' in data[var].attrs
                for var in self.specSettings['variables']
            ]
            if dm.dmarray(attr_bins[0:2]).all():
                self.specSettings['bins'] = [
                    dm.dmarray(
                        data[self.specSettings['variables'][0]].attrs['bins']),
                    dm.dmarray(
                        data[self.specSettings['variables'][1]].attrs['bins']),
                ]
                # TODO this is not a hard extension to doing one with bins and one default
            else:
                # use the toolbox version of linspace so it works on dates
                self.specSettings['bins'] = [
                    dm.dmarray(
                        tb.linspace(
                            self.specSettings['xlim'][0],
                            self.specSettings['xlim'][1],
                            int(
                                np.sqrt(
                                    len(data[self.specSettings['variables']
                                             [0]]))))),
                    dm.dmarray(
                        tb.linspace(
                            self.specSettings['ylim'][0],
                            self.specSettings['ylim'][1],
                            int(
                                np.sqrt(
                                    len(data[self.specSettings['variables']
                                             [1]])))))
                ]

        # copy all the used keys
        for key in self.specSettings['variables']:
            self[key] = data[key]
            try:
                self[key].attrs = data[key].attrs
            except:
                pass
        # do the spectrogram
        self._computeSpec()
Exemple #11
0
 def setUp(self):
     super(PAmodelTests, self).setUp()
     self.PA = tb.linspace(0.01,179.99,20000)
Exemple #12
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def vampolaPA(omniflux, **kwargs):
    '''Pitch angle model of sin^n form

    Parameters
    ==========
    omniflux : arraylike or float
        omnidirectional number flux data

    order : integer or float (optional)
        order of sin^n functional form for distribution (default=2)

    alphas : arraylike (optional)
        pitch angles at which to evaluate the differential number flux
        (default is 5 to 90 degrees in 36 steps)

    Returns
    =======
    dnflux : array
        differential number flux corresponding to pitch angles alphas
    alphas : array
        pitch angles at which the differential number flux was evaluated

    Examples
    ========
    Omnidirectional number flux of [3000, 6000]

    >>> from spacepy.empiricals import vampolaPA
    >>> vampolaPA(3000, alpha=[45, 90])
    (array([ 179.04931098,  358.09862196]), [45, 90])
    >>> data, pas = vampolaPA([3000, 6000], alpha=[45, 90])
    >>> pas
    [45, 90]
    >>> data
    array([[ 179.04931098,  358.09862196],
       [ 358.09862196,  716.19724391]])

    Notes
    =====
    Directional number flux integrated over pitch angle from 0 to 90 degrees
    is a factor of 4*pi lower than omnidirectional number flux.

    '''
    defaults = {'order': 2, 'alpha': tb.linspace(5, 90, 18)}

    if hasattr(omniflux, '__iter__'):
        omniflux = np.asanyarray(omniflux)
    else:
        omniflux = np.asanyarray([omniflux])

    #substitute defaults
    for key in defaults:
        if key not in kwargs:
            kwargs[key] = defaults[key]

    if hasattr(kwargs['order'], '__iter__'):
        try:
            assert len(kwargs['order']) == len(omniflux)
        except AssertionError:
            raise ValueError(
                'order must be either single-valued or the same length as omniflux'
            )
    else:
        kwargs['order'] = np.asanyarray([kwargs['order']] * len(omniflux))
    normfac = np.empty(len(kwargs['order']), dtype=float)

    def sinfunc(x, order=kwargs['order']):  #define distribution function
        dum = np.sin(x)
        return dum**order

    for idx, tmporder in enumerate(kwargs['order']):
        sinfunc_o = partial(sinfunc, order=tmporder + 1)
        normfac[idx] = omniflux[idx] / (2 * np.pi *
                                        integ.quad(sinfunc_o, 0, np.pi)[0])
    #now make the differential number flux
    dnflux = np.zeros((len(kwargs['alpha']), len(omniflux))).squeeze()
    for i, a_val in enumerate(np.deg2rad(kwargs['alpha'])):
        dnflux[i] = normfac * sinfunc(a_val)

    return dnflux, kwargs['alpha']
Exemple #13
0
def vampolaPA(omniflux, **kwargs):
    '''Pitch angle model of sin^n form

    Parameters
    ==========
    omniflux : arraylike or float
        omnidirectional number flux data

    order : integer or float (optional)
        order of sin^n functional form for distribution (default=2)

    alphas : arraylike (optional)
        pitch angles at which to evaluate the differential number flux
        (default is 5 to 90 degrees in 36 steps)

    Returns
    =======
    dnflux : array
        differential number flux corresponding to pitch angles alphas
    alphas : array
        pitch angles at which the differential number flux was evaluated

    Examples
    ========
    Omnidirectional number flux of [3000, 6000]

    >>> from spacepy.empiricals import vampolaPA
    >>> vampolaPA(3000, alpha=[45, 90])
    (array([  75.99088773,  151.98177546]), [45, 90])
    >>> data, pas = vampolaPA([3000, 6000], alpha=[45, 90])
    >>> pas
    [45, 90]
    >>> data
    array([[  75.99088773,  151.98177546],
       [ 151.98177546,  303.96355093]])

    Notes
    =====
    Directional number flux integrated over pitch angle from 0 to 90 degrees
    is a factor of 4*pi lower than omnidirectional number flux.

    '''
    defaults = {'order': 2,
                'alpha': tb.linspace(5,90,18)}

    if hasattr(omniflux, '__iter__'):
        omniflux = np.asanyarray(omniflux)
    else:
        omniflux = np.asanyarray([omniflux])

    #substitute defaults
    for key in defaults:
        if key not in kwargs:
            kwargs[key] = defaults[key]

    if hasattr(kwargs['order'], '__iter__'):
        try:
            assert len(kwargs['order'])==len(omniflux)
        except AssertionError:
            raise ValueError('order must be either single-valued or the same length as omniflux')
    else:
        kwargs['order'] = np.asanyarray([kwargs['order']]*len(omniflux))
    normfac = np.empty(len(kwargs['order']), dtype=float)
    
    def sinfunc(x, order=kwargs['order']): #define distribution function
        dum = np.sin(x)
        return dum**order

    for idx, tmporder in enumerate(kwargs['order']):
        #def partial function so that  order is fixed
        sinfunc_o = partial(sinfunc, order=tmporder)
        normfac[idx] = 4*np.pi*integ.quad(sinfunc_o, 0, np.pi)[0] #quad returns (val, accuracy)

    #now make the differential number flux
    dnflux = np.zeros((len(kwargs['alpha']), len(omniflux))).squeeze()
    for i, a_val in enumerate(np.deg2rad(kwargs['alpha'])):
        dnflux[i] = omniflux * sinfunc(a_val) / normfac

    return dnflux, kwargs['alpha']