本文整理汇总了Python中django.contrib.gis.geos.LineString.distance方法的典型用法代码示例。如果您正苦于以下问题：Python LineString.distance方法的具体用法？Python LineString.distance怎么用？Python LineString.distance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django.contrib.gis.geos.LineString的用法示例。
在下文中一共展示了LineString.distance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: _splitLineString
# 需要导入模块: from django.contrib.gis.geos import LineString [as 别名]
# 或者: from django.contrib.gis.geos.LineString import distance [as 别名]
def _splitLineString(self, lineString, *args):
"""
args type could be Point or list
"""
minDist = sys.maxint
tolerance = 0.1
#split line string with a single point
if type(args[0]) == Point:
splitPoint = args[0]
startPt = lineString.coords[0]
for i in range(1,len(lineString.coords)):
endPt = lineString.coords[i]
lineSeg = LineString(startPt, endPt)
dist = lineSeg.distance(splitPoint)
if dist < minDist:
minDist = dist
splitIndex = i
coords = list(lineString.coords[0:splitIndex])
coords.append((splitPoint.coords))
firstLineString = LineString(coords)
coords = []
coords.append((splitPoint.coords))
coords.extend(lineString.coords[splitIndex:])
secondLineString = LineString(coords)
return [firstLineString, secondLineString]
elif type(args[0]) == tuple or type(args[0]) == list or type(args[0]) == ControlPointList:
splitPointList = args[0]
assert(len(splitPointList) != 0)
splitLines = self._splitLineString(lineString, splitPointList[-1])
splitPointList.pop()
spPtList1 = []
spPtList2 = []
for point in splitPointList:
if splitLines[0].distance(point) < tolerance:
spPtList1.append(point)
else:
spPtList2.append(point)
resList = []
if len(spPtList1) != 0:
resList.extend(self._splitLineString(splitLines[0], spPtList1))
else:
resList.append(splitLines[0])
if len(spPtList2) != 0:
resList.extend(self._splitLineString(splitLines[1], spPtList2))
else:
resList.append(splitLines[1])
return resList
else:
raise 'Error, unsupported type'示例2: test_distance
# 需要导入模块: from django.contrib.gis.geos import LineString [as 别名]
# 或者: from django.contrib.gis.geos.LineString import distance [as 别名]
def test_distance(self):
"Testing the distance() function."
# Distance to self should be 0.
pnt = Point(0, 0)
self.assertEqual(0.0, pnt.distance(Point(0, 0)))
# Distance should be 1
self.assertEqual(1.0, pnt.distance(Point(0, 1)))
# Distance should be ~ sqrt(2)
self.assertAlmostEqual(1.41421356237, pnt.distance(Point(1, 1)), 11)
# Distances are from the closest vertex in each geometry --
# should be 3 (distance from (2, 2) to (5, 2)).
ls1 = LineString((0, 0), (1, 1), (2, 2))
ls2 = LineString((5, 2), (6, 1), (7, 0))
self.assertEqual(3, ls1.distance(ls2))