如何指定在julia中打印Floats数组的格式? [英] How to specify the format for printing an array of Floats in julia?

问题描述

我有一个要打印的数组或矩阵，但只有三位数的精度.我怎么做.我尝试了以下方法.

I have an array or matrix that I want to print, but only to three digits of precision. How do I do that. I tried the following.

> @printf("%.3f", rand())
0.742

> @printf("%.3f", rand(3))
LoadError: TypeError: non-boolean (Array{Bool,1}) used in boolean context 
while loading In[13], in expression starting on line 1

更新:理想情况下，我只想调用printx("{.3f}", rand(m, n))之类的函数，而不必进一步处理数组或矩阵.

Update: Ideally, I just want to call a function like printx("{.3f}", rand(m, n)) without having to further process my array or matrix.

推荐答案

如何?

julia> print(round.(rand(3); digits=3))
[0.188,0.202,0.237]

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