def _vertex_list_to_polygon_list(vertex_rows, vertex_columns):
"""This method is the inverse of `_polygon_list_to_vertex_list`.
P = number of polygons
:param vertex_rows: See doc for `_polygon_list_to_vertex_list`.
:param vertex_columns: Same.
:return: polygon_objects_grid_coords: Same.
:return: polygon_to_first_vertex_indices: length-P numpy array of indices.
If polygon_to_first_vertex_indices[j] = i, the first vertex in the
[j]th polygon is the [i]th vertex in the input arrays.
:raises: ValueError: if row and column lists have NaN's at different
locations.
"""
if len(vertex_rows) == 0:
return [], numpy.array([], dtype=int)
nan_row_indices = numpy.where(numpy.isnan(vertex_rows))[0]
nan_column_indices = numpy.where(numpy.isnan(vertex_columns))[0]
if not numpy.array_equal(nan_row_indices, nan_column_indices):
error_string = ('Row ({0:s}) and column ({1:s}) lists have NaN'
's at different '
'locations.').format(str(nan_row_indices),
str(nan_column_indices))
raise ValueError(error_string)
polygon_to_first_vertex_indices = numpy.concatenate(
(numpy.array([0], dtype=int), nan_row_indices + 1))
vertex_rows_by_polygon = general_utils.split_array_by_nan(vertex_rows)
vertex_columns_by_polygon = general_utils.split_array_by_nan(
vertex_columns)
num_polygons = len(vertex_rows_by_polygon)
polygon_objects_grid_coords = []
for i in range(num_polygons):
this_polygon_object = polygons.vertex_arrays_to_polygon_object(
exterior_x_coords=vertex_columns_by_polygon[i],
exterior_y_coords=vertex_rows_by_polygon[i])
polygon_objects_grid_coords.append(this_polygon_object)
return polygon_objects_grid_coords, polygon_to_first_vertex_indices
def test_split_array_by_nan_1nan(self):
"""Ensures correct output from split_array_by_nan.
In this case, input array has one NaN.
"""
this_list_of_arrays = general_utils.split_array_by_nan(
ARRAY_WITH_ONE_NAN)
self.assertTrue(
len(this_list_of_arrays) == len(ARRAY_WITH_ONE_NAN_AS_LIST))
for i in range(len(this_list_of_arrays)):
self.assertTrue(
numpy.allclose(this_list_of_arrays[i],
ARRAY_WITH_ONE_NAN_AS_LIST[i]))
def _run(model_file_name, component_type_string, target_class, layer_name,
neuron_indices_flattened, channel_indices, top_example_dir_name,
first_spc_date_string, last_spc_date_string, output_file_name):
"""Creates activation maps for one class, neuron, or channel of a CNN.
This is effectively the main method.
:param model_file_name: See documentation at top of file.
:param component_type_string: Same.
:param target_class: Same.
:param layer_name: Same.
:param neuron_indices_flattened: Same.
:param channel_indices: Same.
:param top_example_dir_name: Same.
:param first_spc_date_string: Same.
:param last_spc_date_string: Same.
:param output_file_name: Same.
"""
# Check input args.
file_system_utils.mkdir_recursive_if_necessary(file_name=output_file_name)
model_interpretation.check_component_type(component_type_string)
if component_type_string == CHANNEL_COMPONENT_TYPE_STRING:
error_checking.assert_is_geq_numpy_array(channel_indices, 0)
if component_type_string == NEURON_COMPONENT_TYPE_STRING:
neuron_indices_flattened = neuron_indices_flattened.astype(float)
neuron_indices_flattened[neuron_indices_flattened < 0] = numpy.nan
neuron_indices_2d_list = general_utils.split_array_by_nan(
neuron_indices_flattened)
neuron_index_matrix = numpy.array(neuron_indices_2d_list, dtype=int)
else:
neuron_index_matrix = None
# Read model and metadata.
print('Reading model from: "{0:s}"...'.format(model_file_name))
model_object = cnn.read_model(model_file_name)
metadata_file_name = '{0:s}/model_metadata.p'.format(
os.path.split(model_file_name)[0])
print('Reading metadata from: "{0:s}"...'.format(metadata_file_name))
model_metadata_dict = cnn.read_model_metadata(metadata_file_name)
training_option_dict = model_metadata_dict[cnn.TRAINING_OPTION_DICT_KEY]
# Create generator.
example_file_names = input_examples.find_many_example_files(
top_directory_name=top_example_dir_name,
shuffled=False,
first_spc_date_string=first_spc_date_string,
last_spc_date_string=last_spc_date_string,
raise_error_if_any_missing=False)
training_option_dict[trainval_io.SAMPLING_FRACTIONS_KEY] = None
training_option_dict[trainval_io.EXAMPLE_FILES_KEY] = example_file_names
training_option_dict[trainval_io.FIRST_STORM_TIME_KEY] = (
time_conversion.get_start_of_spc_date(first_spc_date_string))
training_option_dict[trainval_io.LAST_STORM_TIME_KEY] = (
time_conversion.get_end_of_spc_date(last_spc_date_string))
if model_metadata_dict[cnn.LAYER_OPERATIONS_KEY] is not None:
generator_object = testing_io.gridrad_generator_2d_reduced(
option_dict=training_option_dict,
list_of_operation_dicts=model_metadata_dict[
cnn.LAYER_OPERATIONS_KEY],
num_examples_total=LARGE_INTEGER)
elif model_metadata_dict[cnn.CONV_2D3D_KEY]:
generator_object = testing_io.myrorss_generator_2d3d(
option_dict=training_option_dict, num_examples_total=LARGE_INTEGER)
else:
generator_object = testing_io.generator_2d_or_3d(
option_dict=training_option_dict, num_examples_total=LARGE_INTEGER)
# Compute activation for each example (storm object) and model component.
full_id_strings = []
storm_times_unix_sec = numpy.array([], dtype=int)
activation_matrix = None
print(SEPARATOR_STRING)
for _ in range(len(example_file_names)):
try:
this_storm_object_dict = next(generator_object)
except StopIteration:
break
this_list_of_input_matrices = this_storm_object_dict[
testing_io.INPUT_MATRICES_KEY]
these_id_strings = this_storm_object_dict[testing_io.FULL_IDS_KEY]
these_times_unix_sec = this_storm_object_dict[
testing_io.STORM_TIMES_KEY]
full_id_strings += these_id_strings
storm_times_unix_sec = numpy.concatenate(
(storm_times_unix_sec, these_times_unix_sec))
if component_type_string == CLASS_COMPONENT_TYPE_STRING:
print('Computing activations for target class {0:d}...'.format(
target_class))
this_activation_matrix = (
model_activation.get_class_activation_for_examples(
model_object=model_object,
target_class=target_class,
list_of_input_matrices=this_list_of_input_matrices))
this_activation_matrix = numpy.reshape(
this_activation_matrix, (len(this_activation_matrix), 1))
elif component_type_string == NEURON_COMPONENT_TYPE_STRING:
this_activation_matrix = None
for j in range(neuron_index_matrix.shape[0]):
print((
'Computing activations for neuron {0:s} in layer "{1:s}"...'
).format(str(neuron_index_matrix[j, :]), layer_name))
these_activations = (
model_activation.get_neuron_activation_for_examples(
model_object=model_object,
layer_name=layer_name,
neuron_indices=neuron_index_matrix[j, :],
list_of_input_matrices=this_list_of_input_matrices))
these_activations = numpy.reshape(these_activations,
(len(these_activations), 1))
if this_activation_matrix is None:
this_activation_matrix = these_activations + 0.
else:
this_activation_matrix = numpy.concatenate(
(this_activation_matrix, these_activations), axis=1)
else:
this_activation_matrix = None
for this_channel_index in channel_indices:
print(('Computing activations for channel {0:d} in layer '
'"{1:s}"...').format(this_channel_index, layer_name))
these_activations = (
model_activation.get_channel_activation_for_examples(
model_object=model_object,
layer_name=layer_name,
channel_index=this_channel_index,
list_of_input_matrices=this_list_of_input_matrices,
stat_function_for_neuron_activations=K.max))
these_activations = numpy.reshape(these_activations,
(len(these_activations), 1))
if this_activation_matrix is None:
this_activation_matrix = these_activations + 0.
else:
this_activation_matrix = numpy.concatenate(
(this_activation_matrix, these_activations), axis=1)
if activation_matrix is None:
activation_matrix = this_activation_matrix + 0.
else:
activation_matrix = numpy.concatenate(
(activation_matrix, this_activation_matrix), axis=0)
print(SEPARATOR_STRING)
print('Writing activations to file: "{0:s}"...'.format(output_file_name))
model_activation.write_file(pickle_file_name=output_file_name,
activation_matrix=activation_matrix,
full_id_strings=full_id_strings,
storm_times_unix_sec=storm_times_unix_sec,
model_file_name=model_file_name,
component_type_string=component_type_string,
target_class=target_class,
layer_name=layer_name,
neuron_index_matrix=neuron_index_matrix,
channel_indices=channel_indices)
def _run(top_linkage_dir_name, spc_date_string, min_lead_times_sec,
max_lead_times_sec, min_link_distances_metres,
max_link_distances_metres, event_type_string,
wind_speed_percentile_level, wind_speed_cutoffs_kt,
top_output_dir_name):
"""Computes target value for ea storm object, lead-time window, and buffer.
This is effectively the main method.
:param top_linkage_dir_name: See documentation at top of file.
:param spc_date_string: Same.
:param min_lead_times_sec: Same.
:param max_lead_times_sec: Same.
:param min_link_distances_metres: Same.
:param max_link_distances_metres: Same.
:param event_type_string: Same.
:param wind_speed_percentile_level: Same.
:param wind_speed_cutoffs_kt: Same.
:param top_output_dir_name: Same.
"""
num_lead_time_windows = len(min_lead_times_sec)
error_checking.assert_is_numpy_array(
max_lead_times_sec,
exact_dimensions=numpy.array([num_lead_time_windows])
)
num_distance_buffers = len(min_link_distances_metres)
error_checking.assert_is_numpy_array(
max_link_distances_metres,
exact_dimensions=numpy.array([num_distance_buffers])
)
linkage_file_name = linkage.find_linkage_file(
top_directory_name=top_linkage_dir_name,
event_type_string=event_type_string, spc_date_string=spc_date_string)
print 'Reading data from: "{0:s}"...'.format(linkage_file_name)
storm_to_events_table = linkage.read_linkage_file(linkage_file_name)
if event_type_string == linkage.WIND_EVENT_STRING:
list_of_cutoff_arrays_kt = general_utils.split_array_by_nan(
wind_speed_cutoffs_kt)
num_cutoff_sets = len(wind_speed_cutoffs_kt)
else:
list_of_cutoff_arrays_kt = None
num_cutoff_sets = 1
target_names = []
for i in range(num_lead_time_windows):
for j in range(num_distance_buffers):
for k in range(num_cutoff_sets):
if event_type_string == linkage.WIND_EVENT_STRING:
this_target_name = target_val_utils.target_params_to_name(
min_lead_time_sec=min_lead_times_sec[i],
max_lead_time_sec=max_lead_times_sec[i],
min_link_distance_metres=min_link_distances_metres[j],
max_link_distance_metres=max_link_distances_metres[j],
wind_speed_percentile_level=wind_speed_percentile_level,
wind_speed_cutoffs_kt=list_of_cutoff_arrays_kt[k])
target_names.append(this_target_name)
print 'Computing values for "{0:s}"...'.format(
target_names[-1])
storm_to_events_table = (
target_val_utils.create_wind_classification_targets(
storm_to_winds_table=storm_to_events_table,
min_lead_time_sec=min_lead_times_sec[i],
max_lead_time_sec=max_lead_times_sec[i],
min_link_distance_metres=min_link_distances_metres[
j],
max_link_distance_metres=max_link_distances_metres[
j],
percentile_level=wind_speed_percentile_level,
class_cutoffs_kt=list_of_cutoff_arrays_kt[k])
)
else:
this_target_name = target_val_utils.target_params_to_name(
min_lead_time_sec=min_lead_times_sec[i],
max_lead_time_sec=max_lead_times_sec[i],
min_link_distance_metres=min_link_distances_metres[j],
max_link_distance_metres=max_link_distances_metres[j])
target_names.append(this_target_name)
print 'Computing values for "{0:s}"...'.format(
target_names[-1])
storm_to_events_table = (
target_val_utils.create_tornado_targets(
storm_to_tornadoes_table=storm_to_events_table,
min_lead_time_sec=min_lead_times_sec[i],
max_lead_time_sec=max_lead_times_sec[i],
min_link_distance_metres=min_link_distances_metres[
j],
max_link_distance_metres=max_link_distances_metres[
j]
)
)
target_file_name = target_val_utils.find_target_file(
top_directory_name=top_output_dir_name,
event_type_string=event_type_string, spc_date_string=spc_date_string,
raise_error_if_missing=False)
print 'Writing target values to: "{0:s}"...'.format(target_file_name)
target_val_utils.write_target_values(
storm_to_events_table=storm_to_events_table, target_names=target_names,
netcdf_file_name=target_file_name)
def _compute_targets_one_day(storm_to_events_table, spc_date_string,
min_lead_times_sec, max_lead_times_sec,
min_link_distances_metres,
max_link_distances_metres, event_type_string,
wind_speed_percentile_level,
wind_speed_cutoffs_kt, top_output_dir_name):
"""Computes target values for one SPC date.
:param storm_to_events_table: pandas DataFrame returned by
`linkage.read_linkage_file`.
:param spc_date_string: SPC date (format "yyyymmdd").
:param min_lead_times_sec: See documentation at top of file.
:param max_lead_times_sec: Same.
:param min_link_distances_metres: Same.
:param max_link_distances_metres: Same.
:param event_type_string: Same.
:param wind_speed_percentile_level: Same.
:param wind_speed_cutoffs_kt: Same.
:param top_output_dir_name: Same.
"""
num_lead_time_windows = len(min_lead_times_sec)
num_distance_buffers = len(min_link_distances_metres)
if event_type_string == linkage.WIND_EVENT_STRING:
list_of_cutoff_arrays_kt = general_utils.split_array_by_nan(
wind_speed_cutoffs_kt)
num_cutoff_sets = len(wind_speed_cutoffs_kt)
else:
list_of_cutoff_arrays_kt = None
num_cutoff_sets = 1
target_names = []
for i in range(num_lead_time_windows):
for j in range(num_distance_buffers):
for k in range(num_cutoff_sets):
if event_type_string == linkage.WIND_EVENT_STRING:
this_target_name = target_val_utils.target_params_to_name(
min_lead_time_sec=min_lead_times_sec[i],
max_lead_time_sec=max_lead_times_sec[i],
min_link_distance_metres=min_link_distances_metres[j],
max_link_distance_metres=max_link_distances_metres[j],
wind_speed_percentile_level=wind_speed_percentile_level,
wind_speed_cutoffs_kt=list_of_cutoff_arrays_kt[k])
target_names.append(this_target_name)
print(('Computing labels for "{0:s}" on SPC date {1:s}...'
).format(this_target_name, spc_date_string))
storm_to_events_table = (
target_val_utils.create_wind_classification_targets(
storm_to_winds_table=storm_to_events_table,
min_lead_time_sec=min_lead_times_sec[i],
max_lead_time_sec=max_lead_times_sec[i],
min_link_distance_metres=min_link_distances_metres[
j],
max_link_distance_metres=max_link_distances_metres[
j],
percentile_level=wind_speed_percentile_level,
class_cutoffs_kt=list_of_cutoff_arrays_kt[k]))
else:
genesis_only = (event_type_string ==
linkage.TORNADOGENESIS_EVENT_STRING)
this_target_name = target_val_utils.target_params_to_name(
min_lead_time_sec=min_lead_times_sec[i],
max_lead_time_sec=max_lead_times_sec[i],
min_link_distance_metres=min_link_distances_metres[j],
max_link_distance_metres=max_link_distances_metres[j],
genesis_only=genesis_only)
target_names.append(this_target_name)
print(('Computing labels for "{0:s}" on SPC date {1:s}...'
).format(this_target_name, spc_date_string))
storm_to_events_table = (
target_val_utils.create_tornado_targets(
storm_to_tornadoes_table=storm_to_events_table,
min_lead_time_sec=min_lead_times_sec[i],
max_lead_time_sec=max_lead_times_sec[i],
min_link_distance_metres=min_link_distances_metres[
j],
max_link_distance_metres=max_link_distances_metres[
j],
genesis_only=genesis_only))
target_file_name = target_val_utils.find_target_file(
top_directory_name=top_output_dir_name,
event_type_string=event_type_string,
spc_date_string=spc_date_string,
raise_error_if_missing=False)
print('Writing target values to: "{0:s}"...'.format(target_file_name))
target_val_utils.write_target_values(
storm_to_events_table=storm_to_events_table,
target_names=target_names,
netcdf_file_name=target_file_name)