def test__extract_error_percentiles(error_threshold_cube,
                                    error_percentile_cube):
    """Test the extraction of error percentiles from error-probability cube."""
    result = ApplyRainForestsCalibrationLightGBM(
        model_config_dict={})._extract_error_percentiles(
            error_threshold_cube, 4)

    assert result.long_name == error_percentile_cube.long_name
    assert result.units == error_percentile_cube.units
    assert result.coords() == error_percentile_cube.coords()
    assert result.attributes == error_percentile_cube.attributes

    # Test the case where error_threshold_cube has unit realization dimension
    error_threshold_cube = error_threshold_cube.extract(
        Constraint(realization=0))
    error_threshold_cube = new_axis(error_threshold_cube, "realization")
    error_threshold_cube.transpose([1, 0, 2, 3])
    error_percentile_cube = error_percentile_cube.extract(
        Constraint(realization=0))
    error_percentile_cube = new_axis(error_percentile_cube, "realization")
    result = ApplyRainForestsCalibrationLightGBM(
        model_config_dict={})._extract_error_percentiles(
            error_threshold_cube, 4)

    assert result.long_name == error_percentile_cube.long_name
    assert result.units == error_percentile_cube.units
    assert result.coords() == error_percentile_cube.coords()
    assert result.attributes == error_percentile_cube.attributes
Пример #2
0
 def test_masked_unit_array(self):
     cube = stock.simple_3d_mask()
     test_cube = cube[0, 0, 0]
     test_cube = new_axis(test_cube, 'longitude')
     test_cube = new_axis(test_cube, 'latitude')
     data_shape = test_cube.data.shape
     mask_shape = test_cube.data.mask.shape
     self.assertEqual(data_shape, mask_shape)
Пример #3
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 def test_masked_unit_array(self):
     cube = stock.simple_3d_mask()
     test_cube = cube[0, 0, 0]
     test_cube = new_axis(test_cube, "longitude")
     test_cube = new_axis(test_cube, "latitude")
     data_shape = test_cube.data.shape
     mask_shape = test_cube.data.mask.shape
     self.assertEqual(data_shape, mask_shape)
Пример #4
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 def test_lazy_data(self):
     cube = iris.cube.Cube(as_lazy_data(self.data))
     cube.add_aux_coord(iris.coords.DimCoord([1], standard_name="time"))
     res = new_axis(cube, "time")
     self.assertTrue(cube.has_lazy_data())
     self.assertTrue(res.has_lazy_data())
     self.assertEqual(res.shape, (1, ) + cube.shape)
Пример #5
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 def test_lazy_data(self):
     filename = tests.get_data_path(("PP", "globClim1", "theta.pp"))
     cube = iris.load_cube(filename)
     new_cube = new_axis(cube, "time")
     self.assertTrue(cube.has_lazy_data())
     self.assertTrue(new_cube.has_lazy_data())
     self.assertEqual(new_cube.shape, (1, ) + cube.shape)
Пример #6
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    def _extract_error_percentiles(self, error_probability_cube,
                                   error_percentiles_count):
        """Extract error percentile values from the error exceedence probabilities.

        Args:
            error_probability_cube:
                A cube containing error exceedence probabilities.
            error_percentiles_count:
                The number of error percentiles to extract. The resulting percentiles
                will be evenly spaced over the interval (0, 100).

        Returns:
            Cube containing percentile values for the error distributions.
        """
        error_percentiles = choose_set_of_percentiles(
            error_percentiles_count,
            sampling="quantile",
        )
        error_percentiles_cube = ConvertProbabilitiesToPercentiles().process(
            error_probability_cube, percentiles=error_percentiles)
        if len(error_percentiles_cube.coord_dims("realization")) == 0:
            error_percentiles_cube = new_axis(error_percentiles_cube,
                                              "realization")

        return error_percentiles_cube
def test_add_unit_dimension(input_cube, expected_cube):
    """Test case where added dimension is of length 1."""
    realization_coord = DimCoord([0], standard_name="realization", units=1)
    expected_cube = new_axis(expected_cube.extract(Constraint(realization=0)),
                             "realization")
    output_cube = add_coordinate_to_cube(input_cube, realization_coord)
    assert output_cube == expected_cube
 def test_lazy_data(self):
     filename = tests.get_data_path(('PP', 'globClim1', 'theta.pp'))
     cube = iris.load_cube(filename)
     new_cube = new_axis(cube, 'time')
     self.assertTrue(cube.has_lazy_data())
     self.assertTrue(new_cube.has_lazy_data())
     self.assertEqual(new_cube.shape, (1, ) + cube.shape)
Пример #9
0
 def test_lazy_data(self):
     cube = iris.cube.Cube(NumpyArrayAdapter(self.data))
     cube.add_aux_coord(iris.coords.DimCoord([1], standard_name='time'))
     res = new_axis(cube, 'time')
     self.assertTrue(cube.has_lazy_data())
     self.assertTrue(res.has_lazy_data())
     self.assertEqual(res.shape, (1,) + cube.shape)
Пример #10
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 def test_lazy_data(self):
     filename = tests.get_data_path(('PP', 'globClim1', 'theta.pp'))
     cube = iris.load_cube(filename)
     new_cube = new_axis(cube, 'time')
     self.assertTrue(cube.has_lazy_data())
     self.assertTrue(new_cube.has_lazy_data())
     self.assertEqual(new_cube.shape, (1,) + cube.shape)
Пример #11
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 def test_lazy_data(self):
     cube = iris.cube.Cube(as_lazy_data(self.data))
     cube.add_aux_coord(iris.coords.DimCoord([1], standard_name='time'))
     res = new_axis(cube, 'time')
     self.assertTrue(cube.has_lazy_data())
     self.assertTrue(res.has_lazy_data())
     self.assertEqual(res.shape, (1,) + cube.shape)
Пример #12
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    def test_maint_factory(self):
        # Ensure that aux factory persists.
        data = np.arange(12, dtype='i8').reshape((3, 4))

        orography = iris.coords.AuxCoord([10, 25, 50, 5],
                                         standard_name='surface_altitude',
                                         units='m')

        model_level = iris.coords.AuxCoord([2, 1, 0],
                                           standard_name='model_level_number')

        level_height = iris.coords.DimCoord([100, 50, 10],
                                            long_name='level_height',
                                            units='m',
                                            attributes={'positive': 'up'},
                                            bounds=[[150, 75], [75, 20],
                                                    [20, 0]])

        sigma = iris.coords.AuxCoord([0.8, 0.9, 0.95],
                                     long_name='sigma',
                                     bounds=[[0.7, 0.85], [0.85, 0.97],
                                             [0.97, 1.0]])

        hybrid_height = iris.aux_factory.HybridHeightFactory(
            level_height, sigma, orography)

        cube = iris.cube.Cube(data,
                              standard_name='air_temperature',
                              units='K',
                              dim_coords_and_dims=[(level_height, 0)],
                              aux_coords_and_dims=[(orography, 1),
                                                   (model_level, 0),
                                                   (sigma, 0)],
                              aux_factories=[hybrid_height])

        com = iris.cube.Cube(data[None],
                             standard_name='air_temperature',
                             units='K',
                             dim_coords_and_dims=[(copy.copy(level_height), 1)
                                                  ],
                             aux_coords_and_dims=[(copy.copy(orography), 2),
                                                  (copy.copy(model_level), 1),
                                                  (copy.copy(sigma), 1)],
                             aux_factories=[copy.copy(hybrid_height)])
        res = new_axis(cube)

        self.assertEqual(res, com)
        self._assert_cube_notis(res, cube)

        # Check that factory dependencies are actual coords within the cube.
        # Addresses a former bug : https://github.com/SciTools/iris/pull/3263
        factory, = list(res.aux_factories)
        deps = factory.dependencies
        for dep_name, dep_coord in six.iteritems(deps):
            coord_name = dep_coord.name()
            msg = ('Factory dependency {!r} is a coord named {!r}, '
                   'but it is *not* the coord of that name in the new cube.')
            self.assertIs(dep_coord, res.coord(coord_name),
                          msg.format(dep_name, coord_name))
Пример #13
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    def test_scalar_dimcoord(self):
        # Providing a scalar coordinate to promote.
        res = new_axis(self.cube, "time")
        com = iris.cube.Cube(self.data[None])
        com.add_dim_coord(self.coords["lat"].copy(), 1)
        com.add_dim_coord(self.coords["lon"].copy(), 2)
        com.add_aux_coord(self.coords["time"].copy(), 0)
        com.add_aux_coord(self.coords["wibble"].copy(), None)

        self.assertEqual(res, com)
        self._assert_cube_notis(res, self.cube)
Пример #14
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    def test_scalar_auxcoord(self):
        # Providing a scalar coordinate to promote.
        res = new_axis(self.cube, 'wibble')
        com = iris.cube.Cube(self.data[None])
        com.add_dim_coord(self.coords['lat'].copy(), 1)
        com.add_dim_coord(self.coords['lon'].copy(), 2)
        com.add_aux_coord(self.coords['time'].copy(), None)
        com.add_aux_coord(self.coords['wibble'].copy(), 0)

        self.assertEqual(res, com)
        self._assert_cube_notis(res, self.cube)
Пример #15
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    def test_scalar_auxcoord(self):
        # Providing a scalar coordinate to promote.
        res = new_axis(self.cube, 'wibble')
        com = iris.cube.Cube(self.data[None])
        com.add_dim_coord(self.coords['lat'].copy(), 1)
        com.add_dim_coord(self.coords['lon'].copy(), 2)
        com.add_aux_coord(self.coords['time'].copy(), None)
        com.add_aux_coord(self.coords['wibble'].copy(), 0)

        self.assertEqual(res, com)
        self._assert_cube_notis(res, self.cube)
Пример #16
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    def test_scalar_dimcoord(self):
        # Providing a scalar coordinate to promote.
        res = new_axis(self.cube, "time")
        com = iris.cube.Cube(self.data[None])
        com.add_dim_coord(self.coords["lat"].copy(), 1)
        com.add_dim_coord(self.coords["lon"].copy(), 2)
        com.add_aux_coord(self.coords["time"].copy(), 0)
        com.add_aux_coord(self.coords["wibble"].copy(), None)

        self.assertEqual(res, com)
        self._assert_cube_notis(res, self.cube)
Пример #17
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    def test_maint_factory(self):
        # Ensure that aux factory persists.
        data = np.arange(12, dtype='i8').reshape((3, 4))

        orography = iris.coords.AuxCoord([10, 25, 50, 5],
                                         standard_name='surface_altitude',
                                         units='m')

        model_level = iris.coords.AuxCoord([2, 1, 0],
                                           standard_name='model_level_number')

        level_height = iris.coords.DimCoord([100, 50, 10],
                                            long_name='level_height',
                                            units='m',
                                            attributes={'positive': 'up'},
                                            bounds=[[150, 75], [75, 20],
                                                    [20, 0]])

        sigma = iris.coords.AuxCoord([0.8, 0.9, 0.95],
                                     long_name='sigma',
                                     bounds=[[0.7, 0.85], [0.85, 0.97],
                                             [0.97, 1.0]])

        hybrid_height = iris.aux_factory.HybridHeightFactory(
            level_height, sigma, orography)

        cube = iris.cube.Cube(data,
                              standard_name='air_temperature',
                              units='K',
                              dim_coords_and_dims=[(level_height, 0)],
                              aux_coords_and_dims=[(orography, 1),
                                                   (model_level, 0),
                                                   (sigma, 0)],
                              aux_factories=[hybrid_height])

        com = iris.cube.Cube(data[None],
                             standard_name='air_temperature',
                             units='K',
                             dim_coords_and_dims=[(copy.copy(level_height), 1)
                                                  ],
                             aux_coords_and_dims=[(copy.copy(orography), 2),
                                                  (copy.copy(model_level), 1),
                                                  (copy.copy(sigma), 1)],
                             aux_factories=[copy.copy(hybrid_height)])
        res = new_axis(cube)

        self.assertEqual(res, com)
        self._assert_cube_notis(res, cube)
Пример #18
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    def test_maint_factory(self):
        # Ensure that aux factory persists.
        data = np.arange(12, dtype="i8").reshape((3, 4))

        orography = iris.coords.AuxCoord([10, 25, 50, 5], standard_name="surface_altitude", units="m")

        model_level = iris.coords.AuxCoord([2, 1, 0], standard_name="model_level_number")

        level_height = iris.coords.DimCoord(
            [100, 50, 10],
            long_name="level_height",
            units="m",
            attributes={"positive": "up"},
            bounds=[[150, 75], [75, 20], [20, 0]],
        )

        sigma = iris.coords.AuxCoord(
            [0.8, 0.9, 0.95], long_name="sigma", bounds=[[0.7, 0.85], [0.85, 0.97], [0.97, 1.0]]
        )

        hybrid_height = iris.aux_factory.HybridHeightFactory(level_height, sigma, orography)

        cube = iris.cube.Cube(
            data,
            standard_name="air_temperature",
            units="K",
            dim_coords_and_dims=[(level_height, 0)],
            aux_coords_and_dims=[(orography, 1), (model_level, 0), (sigma, 0)],
            aux_factories=[hybrid_height],
        )

        com = iris.cube.Cube(
            data[None],
            standard_name="air_temperature",
            units="K",
            dim_coords_and_dims=[(copy.copy(level_height), 1)],
            aux_coords_and_dims=[(copy.copy(orography), 2), (copy.copy(model_level), 1), (copy.copy(sigma), 1)],
            aux_factories=[copy.copy(hybrid_height)],
        )
        res = new_axis(cube)

        self.assertEqual(res, com)
        self._assert_cube_notis(res, cube)
Пример #19
0
    def create_data_object(self, filenames, variable, index_offset=1):
        from cis.data_io.hdf_vd import get_data
        from cis.data_io.hdf_vd import VDS
        from pyhdf.error import HDF4Error
        from cis.data_io import hdf_sd
        from iris.coords import DimCoord, AuxCoord
        from iris.cube import Cube, CubeList
        from cis.data_io.gridded_data import GriddedData
        from cis.time_util import cis_standard_time_unit
        from datetime import datetime
        from iris.util import new_axis
        import numpy as np

        logging.debug("Creating data object for variable " + variable)

        variables = ["Pressure_Mean"]
        logging.info("Listing coordinates: " + str(variables))

        variables.append(variable)

        # reading data from files
        sdata = {}
        for filename in filenames:
            try:
                sds_dict = hdf_sd.read(filename, variables)
            except HDF4Error as e:
                raise IOError(str(e))

            for var in list(sds_dict.keys()):
                utils.add_element_to_list_in_dict(sdata, var, sds_dict[var])

        # work out size of data arrays
        # the coordinate variables will be reshaped to match that.
        # NOTE: This assumes that all Caliop_L1 files have the same altitudes.
        #       If this is not the case, then the following line will need to be changed
        #       to concatenate the data from all the files and not just arbitrarily pick
        #       the altitudes from the first file.
        alt_data = self._get_calipso_data(hdf_sd.HDF_SDS(filenames[0], 'Altitude_Midpoint'))[0, :]
        alt_coord = DimCoord(alt_data, standard_name='altitude', units='km')
        alt_coord.convert_units('m')

        lat_data = self._get_calipso_data(hdf_sd.HDF_SDS(filenames[0], 'Latitude_Midpoint'))[0, :]
        lat_coord = DimCoord(lat_data, standard_name='latitude', units='degrees_north')

        lon_data = self._get_calipso_data(hdf_sd.HDF_SDS(filenames[0], 'Longitude_Midpoint'))[0, :]
        lon_coord = DimCoord(lon_data, standard_name='longitude', units='degrees_east')

        cubes = CubeList()
        for f in filenames:
            t = get_data(VDS(f, "Nominal_Year_Month"), True)[0]
            time_data = cis_standard_time_unit.date2num(datetime(int(t[0:4]), int(t[4:6]), 15))
            time_coord = AuxCoord(time_data, long_name='Profile_Time', standard_name='time',
                                  units=cis_standard_time_unit)

            # retrieve data + its metadata
            var = sdata[variable]
            metadata = hdf.read_metadata(var, "SD")

            data = self._get_calipso_data(hdf_sd.HDF_SDS(f, variable))

            pres_data = self._get_calipso_data(hdf_sd.HDF_SDS(f, 'Pressure_Mean'))
            pres_coord = AuxCoord(pres_data, standard_name='air_pressure', units='hPa')

            if data.ndim == 2:
                # pres_coord = new_axis()
                cube = Cube(data, long_name=metadata.long_name or variable, units=self.clean_units(metadata.units),
                            dim_coords_and_dims=[(lat_coord, 0), (lon_coord, 1)],
                            aux_coords_and_dims=[(time_coord, ())])
                # Promote the time scalar coord to a length one dimension
                new_cube = new_axis(cube, 'time')
                cubes.append(new_cube)
            elif data.ndim == 3:
                # pres_coord = new_axis()
                cube = Cube(data, long_name=metadata.long_name or variable, units=self.clean_units(metadata.units),
                            dim_coords_and_dims=[(lat_coord, 0), (lon_coord, 1), (alt_coord, 2)],
                            aux_coords_and_dims=[(time_coord, ())])
                # Promote the time scalar coord to a length one dimension
                new_cube = new_axis(cube, 'time')
                # Then add the (extended) pressure coord so that it is explicitly a function of time
                new_cube.add_aux_coord(pres_coord[np.newaxis, ...], (0, 1, 2, 3))
                cubes.append(new_cube)
            else:
                raise ValueError("Unexpected number of dimensions for CALIOP data: {}".format(data.ndim))


        # Concatenate the cubes from each file into a single GriddedData object
        gd = GriddedData.make_from_cube(cubes.concatenate_cube())
        return gd
Пример #20
0
 def test_1d_single_value_common_axis(self):
     # Manually promote scalar time cube to be a 1d cube.
     single = CubeSignature(new_axis(self.scalar_cube, 'time'))
     self.assertEqual(self.series_inc.dim_metadata, single.dim_metadata)
     self.assertEqual(self.series_dec.dim_metadata, single.dim_metadata)
Пример #21
0
    def create_data_object(self, filenames, variable, index_offset=1):
        from cis.data_io.hdf_vd import get_data
        from cis.data_io.hdf_vd import VDS
        from pyhdf.error import HDF4Error
        from cis.data_io import hdf_sd
        from iris.coords import DimCoord, AuxCoord
        from iris.cube import Cube, CubeList
        from cis.data_io.gridded_data import GriddedData
        from cis.time_util import cis_standard_time_unit
        from datetime import datetime
        from iris.util import new_axis
        import numpy as np

        logging.debug("Creating data object for variable " + variable)

        variables = ["Pressure_Mean"]
        logging.info("Listing coordinates: " + str(variables))

        variables.append(variable)

        # reading data from files
        sdata = {}
        for filename in filenames:
            try:
                sds_dict = hdf_sd.read(filename, variables)
            except HDF4Error as e:
                raise IOError(str(e))

            for var in list(sds_dict.keys()):
                utils.add_element_to_list_in_dict(sdata, var, sds_dict[var])

        # work out size of data arrays
        # the coordinate variables will be reshaped to match that.
        # NOTE: This assumes that all Caliop_L1 files have the same altitudes.
        #       If this is not the case, then the following line will need to be changed
        #       to concatenate the data from all the files and not just arbitrarily pick
        #       the altitudes from the first file.
        alt_data = self._get_calipso_data(
            hdf_sd.HDF_SDS(filenames[0], 'Altitude_Midpoint'))[0, :]
        alt_coord = DimCoord(alt_data, standard_name='altitude', units='km')
        alt_coord.convert_units('m')

        lat_data = self._get_calipso_data(
            hdf_sd.HDF_SDS(filenames[0], 'Latitude_Midpoint'))[0, :]
        lat_coord = DimCoord(lat_data,
                             standard_name='latitude',
                             units='degrees_north')

        lon_data = self._get_calipso_data(
            hdf_sd.HDF_SDS(filenames[0], 'Longitude_Midpoint'))[0, :]
        lon_coord = DimCoord(lon_data,
                             standard_name='longitude',
                             units='degrees_east')

        cubes = CubeList()
        for f in filenames:
            t = get_data(VDS(f, "Nominal_Year_Month"), True)[0]
            time_data = cis_standard_time_unit.date2num(
                datetime(int(t[0:4]), int(t[4:6]), 15))
            time_coord = AuxCoord(time_data,
                                  long_name='Profile_Time',
                                  standard_name='time',
                                  units=cis_standard_time_unit)

            # retrieve data + its metadata
            var = sdata[variable]
            metadata = hdf.read_metadata(var, "SD")

            data = self._get_calipso_data(hdf_sd.HDF_SDS(f, variable))

            pres_data = self._get_calipso_data(
                hdf_sd.HDF_SDS(f, 'Pressure_Mean'))
            pres_coord = AuxCoord(pres_data,
                                  standard_name='air_pressure',
                                  units='hPa')

            if data.ndim == 2:
                # pres_coord = new_axis()
                cube = Cube(data,
                            long_name=metadata.long_name or variable,
                            units=self.clean_units(metadata.units),
                            dim_coords_and_dims=[(lat_coord, 0),
                                                 (lon_coord, 1)],
                            aux_coords_and_dims=[(time_coord, ())])
                # Promote the time scalar coord to a length one dimension
                new_cube = new_axis(cube, 'time')
                cubes.append(new_cube)
            elif data.ndim == 3:
                # pres_coord = new_axis()
                cube = Cube(data,
                            long_name=metadata.long_name or variable,
                            units=self.clean_units(metadata.units),
                            dim_coords_and_dims=[(lat_coord, 0),
                                                 (lon_coord, 1),
                                                 (alt_coord, 2)],
                            aux_coords_and_dims=[(time_coord, ())])
                # Promote the time scalar coord to a length one dimension
                new_cube = new_axis(cube, 'time')
                # Then add the (extended) pressure coord so that it is explicitly a function of time
                new_cube.add_aux_coord(pres_coord[np.newaxis, ...],
                                       (0, 1, 2, 3))
                cubes.append(new_cube)
            else:
                raise ValueError(
                    "Unexpected number of dimensions for CALIOP data: {}".
                    format(data.ndim))

        # Concatenate the cubes from each file into a single GriddedData object
        gd = GriddedData.make_from_cube(cubes.concatenate_cube())
        return gd
Пример #22
0
def segmentation_2D(track,
                    field,
                    dxy,
                    threshold=0,
                    target='maximum',
                    method='watershed',
                    max_distance=None):
    """
    Function using watershedding or random walker to determine cloud volumes associated with tracked updrafts
    Parameters:
    track:         pandas.DataFrame 
                   output from trackpy/maketrack
    field_in:      iris.cube.Cube
                   containing the 3D (time,x,y) field to perform the watershedding on 
    threshold:     float 
                   threshold for the watershedding field to be used for the mask
    target:        string
                   Switch to determine if algorithm looks strating from maxima or minima in input field (maximum: starting from maxima (default), minimum: starting from minima)
    method:        str ('method')
                   flag determining the algorithm to use (currently watershedding implemented)
    
    Output:
    segmentation_out: iris.cube.Cube
                   Cloud mask, 0 outside and integer numbers according to track inside the clouds
    
    """
    import numpy as np
    from skimage.morphology import watershed
    #    from skimage.segmentation import random_walker
    import logging
    from iris.cube import CubeList
    from iris.util import new_axis
    from scipy.ndimage import distance_transform_edt

    logging.info('Start wateshedding 2D')

    # CubeList to store individual segmentation masks
    segmentation_out_list = CubeList()

    track['ncells'] = 0

    if max_distance is not None:
        max_distance_pixel = np.ceil(max_distance / dxy)

    field_time = field.slices_over('time')
    for i, field_i in enumerate(field_time):

        # Create cube of the same dimensions and coordinates as input data to store mask:
        segmentation_out_i = 1 * field_i
        segmentation_out_i.rename('segmentation_mask')
        segmentation_out_i.units = 1

        data_i = field_i.core_data()
        time_i = field_i.coord('time').units.num2date(
            field_i.coord('time').points[0])
        tracks_i = track[track['time'] == time_i]

        # mask data outside region above/below threshold and invert data if tracking maxima:
        if target == 'maximum':
            unmasked = data_i > threshold
            data_i_segmentation = -1 * data_i
        elif target == 'minimum':
            unmasked = data_i < threshold
            data_i_segmentation = data_i
        else:
            raise ValueError('unknown type of target')
        markers = np.zeros_like(unmasked).astype(np.int32)
        for index, row in tracks_i.iterrows():
            markers[int(row['hdim_1']), int(row['hdim_2'])] = row['feature']
        markers[~unmasked] = 0

        if method == 'watershed':
            segmentation_mask_i = watershed(data_i_segmentation,
                                            markers.astype(np.int32),
                                            mask=unmasked)
#        elif method=='random_walker':
#            #res1 = random_walker(Mask, markers,mode='cg')
#             res1=random_walker(data_i_segmentation, markers.astype(np.int32),
#                                beta=130, mode='bf', tol=0.001, copy=True, multichannel=False, return_full_prob=False, spacing=None)
        else:
            raise ValueError('unknown method, must be watershed')

            # remove everything from the individual masks that is more than max_distance_pixel away from the markers
        if max_distance is not None:
            for feature in tracks_i['feature']:
                D = distance_transform_edt((markers != feature).astype(int))
                segmentation_mask_i[np.bitwise_and(
                    segmentation_mask_i == feature,
                    D > max_distance_pixel)] = 0

        segmentation_out_i.data = segmentation_mask_i
        # using merge throws error, so cubes with time promoted to DimCoord and using concatenate:
        #        segmentation_out_list.append(segmentation_out_i)
        segmentation_out_i_temp = new_axis(segmentation_out_i,
                                           scalar_coord='time')
        segmentation_out_list.append(segmentation_out_i_temp)

        # count number of grid cells asoociated to each tracked cell and write that into DataFrame:
        values, count = np.unique(segmentation_mask_i, return_counts=True)
        counts = dict(zip(values, count))
        for index, row in tracks_i.iterrows():
            if row['feature'] in counts.keys():
                track.loc[index, 'ncells'] = counts[row['feature']]
        logging.debug('Finished segmentation 2D for ' +
                      time_i.strftime('%Y-%m-%d_%H:%M:%S'))

    #merge individual masks in CubeList into one Cube:
    # using merge throws error, so cubes with time promoted to DimCoord and using concatenate:
#    segmentation_out=segmentation_out_list.merge_cube()
    segmentation_out = segmentation_out_list.concatenate_cube()

    logging.debug('Finished segmentation 2D')

    return segmentation_out, track
Пример #23
0
 def test_1d_single_value_common_axis(self):
     # Manually promote scalar time cube to be a 1d cube.
     single = CubeSignature(new_axis(self.scalar_cube, 'time'))
     self.assertEqual(self.series_inc.dim_metadata, single.dim_metadata)
     self.assertEqual(self.series_dec.dim_metadata, single.dim_metadata)