Julia DataFrame输出功能 [英] Julia DataFrame output functions
问题描述
Julia的哪些功能可以输出DataFrame，以便将其转换为以下所示以外的文本?
What Julia functions can output a DataFrame so it is converted into text other than the ones shown below?
using DataFrames
A = DataFrame(randn(10, 7));
print("\n\n\n", "A = DataFrame(randn(10, 7))")
print("\n\n\n","print(A)\n")
print(A)
print("\n\n\n","show(A)\n")
show(A)
print("\n\n\n","show(A, true)\n")
show(A, true)
print("\n\n\n","show(A, false)\n")
show(A, false)
print("\n\n\n","showall(A)\n")
showall(A)
print("\n\n\n","showall(A, true)\n")
showall(A, true)
print("\n\n\n","showall(A, false)\n")
showall(A, false)
print("\n\n\n","display(A)\n")
display(A)
其中大多数输出类似于以下内容:
Most of these output something similar to the following:
10×7 DataFrames.DataFrame
│ Row │ x1 │ x2 │ x3 │ x4 │ x5 │ x6 │ x7 │
├─────┼────────────┼───────────┼───────────┼───────────┼────────────┼───────────┼───────────┤
│ 1 │ 0.377968 │ -2.23532 │ 0.560632 │ 1.00294 │ 1.32404 │ 1.30788 │ -2.09068 │
│ 2 │ -0.694824 │ -0.765572 │ -1.11163 │ 0.038083 │ -0.52553 │ -0.571156 │ 0.977219 │
│ 3 │ 0.343035 │ -1.47047 │ 0.228148 │ -1.29784 │ -1.00742 │ 0.127103 │ -0.399041 │
│ 4 │ -0.0979587 │ -0.445756 │ -0.483188 │ 0.816921 │ -1.12535 │ 0.603824 │ 0.293274 │
│ 5 │ 1.12755 │ -1.62993 │ 0.178764 │ -0.201441 │ -0.730923 │ 0.230186 │ -0.679262 │
│ 6 │ 0.481705 │ -0.716072 │ 0.747341 │ -0.310009 │ 1.4159 │ -0.175918 │ -0.079051 │
│ 7 │ 0.732061 │ -1.08842 │ -1.18988 │ 0.577758 │ -1.474 │ -1.43082 │ -0.584148 │
│ 8 │ -1.077 │ -1.41973 │ -0.330143 │ -1.12357 │ 1.01005 │ 1.06746 │ 2.09197 │
│ 9 │ -1.60122 │ -1.44661 │ 0.299586 │ 1.46604 │ -0.0200695 │ 2.62421 │ 0.396777 │
│ 10 │ -1.74101 │ -0.541589 │ 0.425117 │ 0.14669 │ 0.95779 │ 1.73954 │ -1.7994 │
这没关系，在笔记本中看起来还不错，并且可以将其正确输出到Latex/pdf，并使用nbconvert作为纯ascii文本表.但是，我希望有更多选项来获得类似于以下内容的文本输出，这在nbconvert生成的latex/pdf中看起来要好得多.
This is ok and looks decent in a notebook, and is output correctly to latex/pdf with nbconvert as a plain ascii text table. However, I want more options to get text output similar to the following which looks much better in the latex/pdf generated by nbconvert.
| Column 1 | Column 2 | Column 3 | Column 4 |
|-------|-------------|-------------|--------------|
| a | b | c | d |
| A | B | C | D |
是否有任何函数以这种格式输出Julia DataFrame?像digits =或caption =这样的其他参数呢?
Are there any functions that output a Julia DataFrame with this formatting? What about other parameters like digits = or caption =?
推荐答案
看看源代码，没有开箱即用的方法.您必须编写自己的代码(然后您可以为github回购贡献代码).
Looking at the source code, there isn't an out-of-the-box way. You'll have to write your own (which you can then contribute to the github repo).
最简单的方法是利用输出 writetable() 到内存文件(使用|作为分隔符)，然后处理列标题
Easiest way to do this is to make use of the output writetable() to an in-memory file (using | as a separator) and then handle the column headers
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