整洁eval ggplot2 NSE无法正确呈现

问题描述

我正在尝试编写一个函数来传递引号，以构造多个ggplots。以下代码可以很好地完成我想要的工作。

fig2.data %>% 
  ggplot(aes(x = Surgery,y = BALF_Protein,fill = Exposure)) +
  stat_summary(geom = "errorbar",fun.data = mean_se,position = "dodge") +
  stat_summary(geom = "bar",fun = mean,position = "dodge") +
  theme_classic() +
  scale_fill_manual(values=c("lightgrey","darkgrey")) +
  facet_grid(cols = vars(Duration))

使用this guide构建了以下函数，并将其称为函数。

plotf <- function(x,y,fill,facet){
  
  x_var <- enquo(x)
  y_var <- enquo(y)
  facet_var <- enquo(facet)
  fill_var <- enquo(fill)
  
  ggplot(fig2.data,aes(x = !!x_var,y = !!y_var,fill = !!fill_var)) +
    stat_summary(geom = "errorbar",position = "dodge") +
    stat_summary(geom = "bar",position = "dodge") +
    theme_classic() +
    scale_fill_manual(values=c("lightgrey","darkgrey")) +
    facet_grid(cols = vars(!!facet_var))
}
plotf(x = "Surgery",y = "BALF_Protein",fill = "Exposure",facet = "Duration")

我的图形呈现没有错误，但是呈现方式却不同。 我在做什么错了？

解决方法

谢谢@Stefan

我不明白为什么，但是按照您的建议进行调用是可行的。当我想遍历变量名的向量以调用该函数并且将按引用传递这些变量时，如何工作？使用syms()吗？

plotf(x = Surgery,y = BALF_Protein,fill = Exposure,facet = Duration)

此处带有一些rnorm()的ReproData，因此您的绘图高度可能略有不同。

fig2.data <- structure(list(Surgery = structure(c(1L,1L,2L,2L),.Label = c("SHAM","HEP VAG"
),class = "factor"),Exposure = structure(c(1L,.Label = c("Air","Ozone"),Duration = structure(c(2L,1L),.Label = c("1d","2d"),BALF_Protein = c(64.2302655135303,75.8662498743628,66.944160651771,64.3494818599307,93.5733806883362,93.9843061725941,94.9296956493259,85.5985055395191,80.4974511604734,70.6316004306272,85.3439438112908,79.4666853120619,84.7319693413318,224.606438793638,78.4487502522719,78.2128699744882,92.0151032176434,79.2127901600167,83.0909690767245,92.0325415462662,60.6200784843927,97.7183404856683,68.7510921525122,41.9625493809036,311.769822036931,450.597937801349,283.639976251784,190.840750069959,187.810222461528,203.735530975931,547.003463243173,517.871472878502,164.167773487012,202.777306107217,666.896662547508,361.46103562071,270.119121964956,234.635143377769,94.4541075117046,91.1060986818939,142.774777316869,300.021992736686,279.775933301683,246.554185364089,298.964364163939,193.737945537319,232.918974192744,150.384203703162)),row.names = c(NA,-48L),class = "data.frame")