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利用现有经验、名称和数据,确定用于测绘国家——图像的特性物体
原标题:Using parse_expr(), quo_name(), and enquo() to define a character object for plotting country-wise graphs in ggplot

我有一份<条码><>功能/代码>,来自一源,使用包括国名在内的多种投入,并返还该国图表。 该职能的第一行将“国名”改为“国名”。 当我试图从该职能中撤出该部分并单独运作时,该部分在职能范围内进行罚款时,就留下了一个错误。 任何人都认为,为什么发生这种情况,这一国家法典路线的目的是什么?

function(df, dfline, Country_name){
  Country_name <- rlang::parse_expr(quo_name(enquo(Country_name)))
  df %>%
    filter(Country == Country_name ...
}

排出第一行,单独排出一条错误:

parse_expr(quo_name(enquo( United States )))

### Error in `enquo()`:
### ! `arg` must be a symbol
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