CartesianIndices从起始和结束元组中创建

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英文:

CartesianIndices from start and end tuples

问题

我想使用起始和结束元组构建CartesianIndices。例如，我想使用start = (2,3)和end = (4,5)构建CartesianIndices((2:4, 3:5))。

CartesianIndices没有为此提供构造函数。是否有简单的替代方法？

英文:

I want to construct CartesianIndices using start and end tuples. For example, I want to construct CartesianIndices((2:4, 3:5)) given start = (2,3) and end = (4,5).

CartesianIndices provides no constructor for this. Is there an easy alternative?

答案1

得分: 1

是的，有的：

  1. julia> CartesianIndices(UnitRange.((2,3), (4,5))) |> collect
  2. 3×3 Matrix{CartesianIndex{2}}:
  3.  CartesianIndex(2, 3)  CartesianIndex(2, 4)  CartesianIndex(2, 5)
  4.  CartesianIndex(3, 3)  CartesianIndex(3, 4)  CartesianIndex(3, 5)
  5.  CartesianIndex(4, 3)  CartesianIndex(4, 4)  CartesianIndex(4, 5)
英文:

Yes, there is:

  1. julia> CartesianIndices(UnitRange.((2,3), (4,5))) |> collect
  2. 3×3 Matrix{CartesianIndex{2}}:
  3.  CartesianIndex(2, 3)  CartesianIndex(2, 4)  CartesianIndex(2, 5)
  4.  CartesianIndex(3, 3)  CartesianIndex(3, 4)  CartesianIndex(3, 5)
  5.  CartesianIndex(4, 3)  CartesianIndex(4, 4)  CartesianIndex(4, 5)

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  • 本文由 发表于 2023年7月3日 10:49:03
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