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%matplotlib inline

Defining a Custom Preprocessor and Extrapolator

Here you will be creating trivial preprocessor and and exztrqapolatoirs following the API.

Testing a preprocessor



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# Define a trivial preprocessor
class PreZeros(Preprocessors):
    def __init__(self, map_magnetogram):
        super(PreZeros, self).__init__(map_magnetogram)

    def _preprocessor(self):
        # Adding in custom parameters to the meta
        self.meta['preprocessor_routine'] = 'Zeros Preprocessor'

        # Creating the trivial zeros map of the same shape as the input map
        map_output = sunpy.map.Map((np.zeros(self.map_input.data.shape),
                                    self.meta))

        # Outputting the map.
        return map_output

# Generate the boundary
aMap2D = sunpy.map.Map(
    'C://git//solarextrapolation//solarextrapolation//data//example_data_(100x100)__01_hmi.fits')
aPrePro = PreZeros(aMap2D.submap([0, 10], [0, 10]))
aPreProData = aPrePro.preprocess()

# aPreProData = aMap2D.submap([0,10], [0,10])

# Some checks:
#aPreProData.data # Should be a 2D zeros array.
#aPreProData.meta
#aPreProData.meta['preprocessor_routine']
#aPreProData.meta['preprocessor_start_time']

Testing an extrapolator



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# Define trivial extrapolator
class ExtZeros(Extrapolators):
    def __init__(self, map_magnetogram, **kwargs):
        super(ExtZeros, self).__init__(map_magnetogram, **kwargs)

    def _extrapolation(self):
        # Adding in custom parameters to the meta
        self.meta['extrapolator_routine'] = 'Zeros Extrapolator'

        arr_4d = np.zeros([self.map_boundary_data.data.shape[0],
                           self.map_boundary_data.data.shape[0], self.z, 3])
        return Map3D((arr_4d, self.meta))


aExt = ExtZeros(
    aPreProData,
    filepath='C://Users/Alex/solarextrapolation/solarextrapolation/3Dmap.m3d')
aMap3D = aExt.extrapolate()

# Some checks:
#aMap3D.data # Should be a 4D zeros array.
#aMap3D.meta
#aMap3D.meta['extrapolator_routine']
#aMap3D.meta['extrapolator_start_time']

# Testing a Map3DCube

aMapCube = Map3DCube(aMap3D, aMap3D)
aMapCube[0]
aMapCube[0].data
aMapCube[0].meta
aMapCube[1].data
aMapCube[1].meta