以下是我的模型：
class Coast(TimeStampedModel):
position = PointField(null=True, srid=4326)
shape_id = models.IntegerField(null=True)
state = models.CharField(max_length=4, null=True, blank=True, choices=US_STATES)
point_type = models.CharField(max_length=25, choices=cc.POINT_TYPES, default=cc.POINT_TYPES.COAST, db_index=True)
interpolated = models.BooleanField(default=False)
这是我正在运行的代码：
def get_distances(current_address):
return (models.Coast.objects
.filter(point_type='COAST', position__distance_lte=(current_address, D(m=10000)))
.annotate(distance=Distance("position", current_address))
.order_by("distance"))
current_address = Point(x=26.3960373, y=-80.0755588, srid=4326)
distances = get_distances(current_address)
for dd in distances[0:10]:
print 'distance:', dd.distance.m, current_address.distance(dd.position)
以下是输出：
distance: 1090.96923342 2.9609226587
distance: 1091.50068042 1.80716304192
distance: 1120.14014531 1.31372843777
distance: 1129.40394238 3.86868793486
distance: 1153.68196704 1.1093495446
distance: 1193.25809435 5.09212206614
distance: 1217.1136617 1.16301011591
distance: 1231.50011729 5.09984181242
distance: 1251.77367236 6.0540028636
distance: 1301.92838504 6.5265317962
我正在尝试找出为什么筛选查询集并按距离排序
.order_by('distance')
返回的顺序与手动计算两点之间的距离不同？
current_address.distance(dd.position)
我正在尝试找到距离当前地址最近的点。