在 Julia 中读入数组 [英] read into arrays in Julia

问题描述

我对 Julia 比较陌生，正在寻找一种从文本文件中读取数据并将每个列"存储在数组中的有效方法(我有 2 列，但一般的解决方案也很好).例如，我想要输入

I'm relatively new to Julia and am looking for an efficient way to read in from a text file and store each "column" in an array (I have 2 columns, but a general solution would be great as well). For instance, I'd like the input

    1 2
    3 4
    5 6

被读入两个数组，例如 x 和 y，使得 x=[1 3 5] 和 y=[2 4 6].我有一个可行的解决方案(可能无法编译，只是随意)，但我觉得有一种比 hcat 和逐行读取输入文件更有效的方法.任何建议都非常感谢！

to be read into two arrays, say, x and y, such that x=[1 3 5] and y=[2 4 6]. I have a working solution (might not compile, just free-handed it), but I feel like there is a more efficient way to do this than to hcat and to read the input file line by line. Any suggestions are much appreciated!

目前，我或多或少正在做以下事情:

Currently, I am doing the following, more or less:

x=[]; 
y=[]; 
f=open("filename"); 
f=readlines(f); 
for str in f 
     s1, s2= split(str, " "); 
     s1=int(s1); 
     s2=int(s2); 
     x=hcat(x, s1); 
     y=hcat(y, s2);
end

推荐答案

这里有办法.

julia> myarray=int(open(readdlm,"mynums.txt"))
3x2 Array{Int32,2}:
 1  2
 3  4
 5  6

julia> x=myarray[:,1]
3-element Array{Int32,1}:
 1
 3
 5

julia> y=myarray[:,2]
3-element Array{Int32,1}:
 2
 4
 6

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