本文整理汇总了Python中safe.impact_function.impact_function.ImpactFunction.use_selected_features_only方法的典型用法代码示例。如果您正苦于以下问题：Python ImpactFunction.use_selected_features_only方法的具体用法？Python ImpactFunction.use_selected_features_only怎么用？Python ImpactFunction.use_selected_features_only使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类safe.impact_function.impact_function.ImpactFunction的用法示例。
在下文中一共展示了ImpactFunction.use_selected_features_only方法的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: prepare_impact_function
# 需要导入模块: from safe.impact_function.impact_function import ImpactFunction [as 别名]
# 或者: from safe.impact_function.impact_function.ImpactFunction import use_selected_features_only [as 别名]
def prepare_impact_function(self):
"""Create analysis as a representation of current situation of IFCW."""
# Impact Functions
impact_function = ImpactFunction()
impact_function.callback = self.progress_callback
# Layers
impact_function.hazard = self.parent.hazard_layer
impact_function.exposure = self.parent.exposure_layer
aggregation = self.parent.aggregation_layer
if aggregation:
impact_function.aggregation = aggregation
impact_function.use_selected_features_only = (
setting('useSelectedFeaturesOnly', False, bool))
else:
mode = setting('analysis_extents_mode')
if self.extent.user_extent:
# This like a hack to transform a geometry to a rectangle.
# self.extent.user_extent is a QgsGeometry.
# impact_function.requested_extent needs a QgsRectangle.
wkt = self.extent.user_extent.exportToWkt()
impact_function.requested_extent = wkt_to_rectangle(wkt)
impact_function.requested_extent_crs = self.extent.crs
elif mode == HAZARD_EXPOSURE_VIEW:
impact_function.requested_extent = (
self.iface.mapCanvas().extent())
impact_function.requested_extent_crs = self.extent.crs
# We don't have any checkbox in the wizard for the debug mode.
impact_function.debug_mode = False
return impact_function示例2: test_minimum_extent
# 需要导入模块: from safe.impact_function.impact_function import ImpactFunction [as 别名]
# 或者: from safe.impact_function.impact_function.ImpactFunction import use_selected_features_only [as 别名]
def test_minimum_extent(self):
"""Test we can compute the minimum extent in the IF."""
# Without aggregation layer
hazard_layer = load_test_vector_layer(
'hazard', 'flood_multipart_polygons.shp')
exposure_layer = load_test_vector_layer('exposure', 'roads.shp')
impact_function = ImpactFunction()
impact_function.exposure = exposure_layer
impact_function.hazard = hazard_layer
status, message = impact_function.prepare()
self.assertEqual(PREPARE_SUCCESS, status, message)
message = (
'Test about the minimum extent without an aggregation layer is '
'failing.')
self.assertTrue(
compare_wkt(
'Polygon (('
'106.8080099999999959 -6.19531000000000009, '
'106.8080099999999959 -6.16752599999999962, '
'106.83456946836641066 -6.16752599999999962, '
'106.83456946836641066 -6.19531000000000009, '
'106.8080099999999959 -6.19531000000000009))',
impact_function.analysis_extent.exportToWkt()),
message
)
# Without aggregation layer but with a requested_extent
hazard_layer = load_test_vector_layer(
'hazard', 'flood_multipart_polygons.shp')
exposure_layer = load_test_vector_layer('exposure', 'roads.shp')
impact_function = ImpactFunction()
impact_function.exposure = exposure_layer
impact_function.hazard = hazard_layer
impact_function.requested_extent = wkt_to_rectangle(
'POLYGON (('
'106.772279 -6.237576, '
'106.772279 -6.165415, '
'106.885165 -6.165415, '
'106.885165 -6.237576, '
'106.772279 -6.237576'
'))')
impact_function.requested_extent_crs = QgsCoordinateReferenceSystem(
4326)
status, message = impact_function.prepare()
self.assertEqual(PREPARE_SUCCESS, status, message)
message = (
'Test about the minimum extent without an aggregation layer but '
'with a requested extent is failing.')
self.assertTrue(
compare_wkt(
'Polygon (('
'106.8080099999999959 -6.19531000000000009, '
'106.8080099999999959 -6.16752599999999962, '
'106.83456946836641066 -6.16752599999999962, '
'106.83456946836641066 -6.19531000000000009, '
'106.8080099999999959 -6.19531000000000009))',
impact_function.analysis_extent.exportToWkt()),
message
)
# With an aggregation layer, without selection
hazard_layer = load_test_vector_layer(
'gisv4', 'hazard', 'classified_vector.geojson')
exposure_layer = load_test_vector_layer(
'gisv4', 'exposure', 'building-points.geojson')
aggregation_layer = load_test_vector_layer(
'gisv4', 'aggregation', 'small_grid.geojson')
impact_function = ImpactFunction()
impact_function.aggregation = aggregation_layer
impact_function.exposure = exposure_layer
impact_function.hazard = hazard_layer
impact_function.use_selected_features_only = False
impact_function.aggregation.select(0)
status, message = impact_function.prepare()
self.assertEqual(PREPARE_SUCCESS, status, message)
message = (
'Test about the minimum extent with an aggregation layer is '
'failing.')
self.assertTrue(
compare_wkt(
'Polygon ((106.9033179652593617 -6.18324454090033182, '
'106.90331796525939012 -6.2725478115989306, '
'106.72365490843547775 -6.2725478115989306, '
'106.72365490843547775 -6.18324645462287137, '
'106.72365490843547775 -6.09392810187095257, '
'106.81348643684744104 -6.09392810187095257, '
'106.9033179652593617 -6.09392810187095257, '
'106.9033179652593617 -6.18324454090033182))',
impact_function.analysis_extent.exportToWkt()),
message
)
# With an aggregation layer, with selection
impact_function.use_selected_features_only = True
impact_function.aggregation = aggregation_layer
status, message = impact_function.prepare()
self.assertEqual(PREPARE_SUCCESS, status, message)
message = (
'Test about the minimum extent with an aggregation layer and '
#.........这里部分代码省略.........