从某些向量创建价值对

发布于 2025-02-07 04:04:55 字数 727 浏览 1 评论 0原文

假设我们有一对类似以下的对，并且每对都带有一个附加的值。毫无疑问，对（1,2）是2.5。还有另一组p1代表一组人。每个人都连接到一组对。例如，对于p1 中的p，它们的关联对是p1_pairs（即[（1，2），（1，1，7），（2））]



Pairs  = [(1, 2), (1, 7), (2, 3), (2, 5),(3, 4), (3, 5), (4, 1), (4, 5), (5, 2)]
Values = [ 2.5,    4.1,    7.4,    5.6,   2.8,    3.7,    6.9,     0.2,    3.2 ]

P1 = ['p','q']
p1_pairs = [   [(1, 2), (1, 7), (2, 3)], 
               [(1, 2), (2, 3), (2, 5) ,(5, 2)] 
           ]

， 3

。 1，2）] = 2.5 和person_values ['q'，（2，3）] = 7.4。换句话说，person_values将通过p1和p1_pairs 索引索引，然后根据其value将相应值分配给它们。

原文

Suppose we have a set of pair like the following, and each pair comes with a value attached to it. For isntance the value of pair (1,2) is 2.5.
There are another set p1 which represent a set of persons. Each person connected to set of pairs. For instance, for p in p1 their associated pairs are the first elemenst of p1_pairs (i.e. [(1, 2), (1, 7), (2, 3)].



Pairs  = [(1, 2), (1, 7), (2, 3), (2, 5),(3, 4), (3, 5), (4, 1), (4, 5), (5, 2)]
Values = [ 2.5,    4.1,    7.4,    5.6,   2.8,    3.7,    6.9,     0.2,    3.2 ]

P1 = ['p','q']
p1_pairs = [   [(1, 2), (1, 7), (2, 3)], 
               [(1, 2), (2, 3), (2, 5) ,(5, 2)] 
           ]

The question is, how to bulid up a parameter person_values such that it return the value of the associated pairs?

For instance person_values['p',(1, 2)] = 2.5 and person_values['q',(2, 3)] = 7.4.
In other words person_values will be indexed over elemets of p1 and p1_pairs and then assign s the corresponding values to them based on their values

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や莫失莫忘 2025-02-14 04:04:55

如果我正确理解您的问题，您想要这个：

julia> pv = Dict( Pairs .=> Values);

julia> [getindex.(Ref(pv), vals) for vals in p1_pairs]
2-element Vector{Vector{Float64}}:
 [2.5, 4.1, 7.4]
 [2.5, 7.4, 5.6, 3.2]

If I correctly understood your question you want this:

julia> pv = Dict( Pairs .=> Values);

julia> [getindex.(Ref(pv), vals) for vals in p1_pairs]
2-element Vector{Vector{Float64}}:
 [2.5, 4.1, 7.4]
 [2.5, 7.4, 5.6, 3.2]

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