本文整理汇总了Python中viewer.Viewer.clear_features方法的典型用法代码示例。如果您正苦于以下问题：Python Viewer.clear_features方法的具体用法？Python Viewer.clear_features怎么用？Python Viewer.clear_features使用的例子？那么恭喜您, 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viewer.Viewer的用法示例。
在下文中一共展示了Viewer.clear_features方法的1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: EarthMineQGIS
# 需要导入模块: from viewer import Viewer [as 别名]
# 或者: from viewer.Viewer import clear_features [as 别名]
#.........这里部分代码省略.........
empoint = EarthminePoint(newpoint, point)
earthminepoints.append(empoint)
if end and not self.viewer.mode == "Vertical":
geom = self.tempband.asGeometry()
self.add_feature(layer, geom)
self.clear_bands()
self.viewer.geom = EarthmineLine(earthminepoints, stats)
self.tempband.show()
self.tempbandpoints.show()
@pyqtSlot(str, str, str, float)
def locationChanged(self, lat, lng, yaw, angle):
transform = self.coordinatetransform()
point = transform.transform(float(lng), float(lat))
self.marker.setCenter(point)
yaw = float(yaw)
self.marker.setAngle(angle)
self.marker.setYaw(yaw)
self.marker.setTracking(self.viewer.tracking)
if self.marker.tracking:
rect = QgsRectangle(point, point)
extentlimt = QgsRectangle(self.canvas.extent())
extentlimt.scale(0.95)
if not extentlimt.contains(point):
self.canvas.setExtent(rect)
self.canvas.refresh()
# Clear old features
self.viewer.clear_features()
self.load_layer_features(point)
def update_earthmine_features(self, viewfeatures):
self.viewer.clear_features()
if viewfeatures:
self.load_layer_features()
def load_layer_features(self, point=None, layers=None):
# TODO Move this logic into the viewer and let it track it's position
if point is None and self.marker.map_pos is None:
return
if point is None:
point = self.marker.map_pos
area, units = self.distancearea()
rect = search_area(units, area, point)
if layers is None:
layers = self.visible_layers()
for layer in layers:
transform = self.coordinatetransform(layer)
# Transform the rect
source = self.canvas.mapRenderer().destinationCrs()
dest = layer.crs()
recttransform = QgsCoordinateTransform(source, dest)
rect = recttransform.transformBoundingBox(rect)
features = list(get_features_in_area(layer, rect, transform, self.canvas.mapSettings()))
geomtype = layer.geometryType()