没有轴或网格的ggplot2主题

Question

我试图制作一个没有数据之外的信息的情节.没有轴; 没有网格; 无题; 只是情节.

但我不断获得额外的利润和填充,我无法删除.

library(ggplot2)
library(grid)

theme_bare <- theme(
  axis.line = element_blank(), 
  axis.text.x = element_blank(), 
  axis.text.y = element_blank(),
  axis.ticks = element_blank(), 
  axis.title.x = element_blank(), 
  axis.title.y = element_blank(), 
  #axis.ticks.length = unit(0, "lines"), # Error 
  axis.ticks.margin = unit(c(0,0,0,0), "lines"), 
  legend.position = "none", 
  panel.background = element_rect(fill = "gray"), 
  panel.border = element_blank(), 
  panel.grid.major = element_blank(), 
  panel.grid.minor = element_blank(), 
  panel.margin = unit(c(0,0,0,0), "lines"), 
  plot.background = element_rect(fill = "blue"),
  plot.margin = unit(c(0,0,0,0), "lines")
)

ggplot() + 
  geom_area (data=economics, aes(x = date, y = unemploy), linetype=0) +
  theme_bare

生成此图片:

我想要的是这个:

我无法弄清楚如何摆脱蓝色,使深灰色与边缘齐平.

任何人都可以提供一些建议吗？

Answer 1

以下是仅绘制面板区域的方法:

p <- ggplot() + geom_area (data=economics, aes(x = date, y = unemploy), linetype=0) +
  scale_x_date(expand = c(0,0)) + scale_y_continuous(expand = c(0,0)) +
  theme(line = element_blank(),
        text = element_blank(),
        title = element_blank())

gt <- ggplot_gtable(ggplot_build(p))
ge <- subset(gt$layout, name == "panel")

grid.draw(gt[ge$t:ge$b, ge$l:ge$r])

Answer 2

从ggplot2_2.0.0你可以使用theme_void:

ggplot() + 
  geom_area(data = economics, aes(x = date, y = unemploy), linetype = 0) +
  theme_void()

Answer 3

尝试

last_plot() + theme(axis.ticks.length = unit(0.001, "mm")) + labs(x=NULL, y=NULL)

您可能想要为0刻度长度提交错误.