收到错误说明“错误：`x` 必须是公式”

【问题标题】：getting error stating "Error: `x` must be a formula"收到错误说明“错误：`x` 必须是公式”
【发布时间】：2019-10-29 21:45:15
【问题描述】：

我正在使用具有 summary_table 功能的 qwraps2 包。出于某种原因，当我运行下面的代码时，出现错误“错误：x 必须是公式”。

args(summary_table)

summary_table(death_vs_gender, summaries = qsummary(death_vs_gender))

our_summary1 <- list("Table 2: Summary Statistics for Mass 
Shooting Deaths in American between 
1966-2017 by Men & Women" = list(
                             "n" = sum(death_vs_gender$Deaths),
                             "Min" = ~ min(death_vs_gender$Deaths),
                             "Max" = ~ max(death_vs_gender$Deaths),
                             "Median" = ~ median(death_vs_gender$Deaths),
                             "Mean" = ~ mean(death_vs_gender$Deaths),
                             "Std. Dev." = ~ sd(death_vs_gender$Deaths)))


whole <- summary_table(death_vs_gender, our_summary1)
whole

【问题讨论】：

标签： r qwraps2

【解决方案1】：

"n" = sum(death_vs_gender$Deaths), 行中似乎省略了 ~。

尝试以下方法：

our_summary1 <- 
  list("Table 2: Summary Statistics for Mass Shooting Deaths in American between 1966-2017 by Men & Women" = 
       list(
            "n"         = ~ sum(Deaths),
            "Min"       = ~ min(Deaths),
            "Max"       = ~ max(Deaths),
            "Median"    = ~ median(Deaths),
            "Mean"      = ~ mean(Deaths),
            "Std. Dev." = ~ sd(Deaths)
           )
      )

请注意，名称 death_vs_gender 已被省略。调用summary_table 时在提供的data.frame 中查找变量。此外，从 qwraps2 的 0.5.0 版本开始，不再需要或不推荐使用数据代词 .data。

【讨论】：