我正在尝试使用Brightway的 var point1 = new google.maps.LatLng(marker.getPosition().lat(), marker.getPosition().lng());
var point2 = new google.maps.LatLng(satelite.getPosition().lat(), satelite.getPosition().lng());
var distance = google.maps.geometry.spherical.computeDistanceBetween(point1, point2);
alert('distance is '+distance+'m');
和ParallelMonteCarlo
类,但遇到了KeyError。我在带有LCI数据库的Brightway项目中:
MultiMonteCarlo
选择活动和方法:
In [1] bw.databases
Out [1] Brightway2 databases metadata with 2 objects:
biosphere3
ecoinvent 3_2 CutOff
我的代码如下:
In [2] db = bw.Database('ecoinvent 3_2 CutOff')
act = db.random()
method = ('CML 2001', 'climate change', 'GWP 100a')
和
In [3] ParallelMC_LCA = bw.ParallelMonteCarlo({act:1},
method = myMethod,
iterations=1000,
cpus=mp.cpu_count())
results = np.array(ParallelMC_LCA.calculate())
两者都给了我一个In [4] act1 = db.random()
act2 = db.random()
multiMC_LCA = bw.MultiMonteCarlo(demands = [{act1:1}, {act2:1}],
method = myMethod,
iterations = 10)
results = np.array(ParallelMC_LCA.calculate())
。
我的问题是:为什么?
答案 0 :(得分:0)
这是known issue due to differences in how multiprocessing works on Windows and Unix。具体来说,在Windows上,项目设置不正确,导致KeyError
。因此,它不是Stack Overflow问题。