Question

我想将一列分成两列。

当我在控制台下方添加代码时，表示该列已拆分。

> separate(refine, "Product code / number", into =  c("product code", "number"), sep = "-")
# A tibble: 25 x 9
   company `product code` number             address   city         country            
   name
 *   <chr>          <chr>  <chr>               <chr>  <chr>           <chr>           
<chr>
1 philips              p      5 Groningensingel 147 arnhem the netherlands   
dhr p. jansen
2 philips              p     43 Groningensingel 148 arnhem the netherlands   
dhr p. hansen
3 philips              x      3 Groningensingel 149 arnhem the netherlands   
dhr j. Gansen
4 philips              x     34 Groningensingel 150 arnhem the netherlands   
dhr p. mansen
5 philips              x     12 Groningensingel 151 arnhem the netherlands  
dhr p. fransen
6 philips              p     23 Groningensingel 152 arnhem the netherlands 
dhr p. franssen

问题是，当我检查结果时，列没有拆分。

refine[,2]
# A tibble: 25 x 1
   `Product code / number`
                 <chr>
 1                     p-5
 2                    p-43
 3                     x-3
 4                    x-34

Answer 1

你永远不会在rstudio的脚本部分看到输出...或者在.R脚本文件中看到输出。该脚本仅存储命令。输出可以在控制台中看到，它可以作为对象存储在环境中。在rstudio中，您可以通过命令View（）可视化环境和某些类型的输出。看看rstudio的备忘单：Rstudio.pdf

Answer 2

You are not assigning the result. separate doesn’t modify the existing variable refine (few functions in R ever modify their arguments). It returns a new table with the split columns. You need to assign the result to a new (or existing) name:

result = separate(refine, "Product code / number", into =  c("product code", "number"), sep = "-")

Instead of creating a new variable (result), you can also overwrite refine (refine = separate(refine, …)) though I would generally recommend against modifying existing variables.

Contrary to what your question title states, there’s no difference in behaviour between R scripts and the R console. This is a fundamental, universal R behaviour.

Skript和Console之间的区别

2 个答案: