调整标题和绘图边缘之间的空白

Question

我想在标题（轴标题和绘图标题）和绘图边缘之间创建空间。我试过axis.title和plot.title，但没有运气。当我尝试vjust的各种值时，剧情没有真正改变。我也试过plot.margin，但似乎也没有发生。

数据：

data = data.frame(Category = c(0,1), value = c(40000, 120000)) 
data$Category = factor(data$Category, levels = c(0,1), labels = c("One-time", "Repeat")) 

简介：

p = ggplot(data, aes(Category, Value)) + 
    geom_bar(stat = "identity", width = 0.5, position=position_dodge(width=0.9)) + 
    geom_text(aes(label=Value), position=position_dodge(width=0.9), family = "mono", vjust=-0.5) + 
    ggtitle("Title") + 
    scale_y_continuous(expand = c(0,0), limits = c(0,150000)) + 
    scale_x_discrete(expand = c(0,0), limits = c("One-time", "Repeat")) + 
    xlab("X axis Title") + 
    ylab("Y axis Title") 

主题：

p + theme(
    panel.grid.major = element_line(linetype = "blank"), 
    panel.grid.minor = element_line(linetype = "blank"), 
    axis.title = element_text(family = "sans", size = 15), 
    axis.text = element_text(family = "mono", size = 12), 
    plot.title = element_text(family = "sans", size = 18), 
    panel.background = element_rect(fill = NA) 
) 

Exported plot

Answer 1

你要做到这一点使用margin

p + theme(
    panel.grid.major = element_line(linetype = "blank"), 
    panel.grid.minor = element_line(linetype = "blank"), 
    axis.title.x = element_text(family = "sans", size = 15, margin=margin(30,0,0,0)), 
    axis.title.y = element_text(family = "sans", size = 15, margin=margin(0,30,0,0)), 
    axis.text = element_text(family = "mono", size = 12), 
    plot.title = element_text(family = "sans", size = 18, margin=margin(0,0,30,0)), 
    panel.background = element_rect(fill = NA) 
) 

注意，保证金需要四个输入和他们指定的顺序顶部的空间，右，下，左。另外请注意我使用的是开发版的ggplot2版本，所以我的标题默认值是左对齐的。 'hjust'和'vjust'在ggplot2的旧版本中工作。