P204: 图C.1 中译本错误&原书错误

[taiyun]

第204页，图C.1 中panel_2_1应为panel_1_2。原书错误，译本也忘记了更正，致歉！

[doctorjxd]

图C.1 中有两个panel_2_1，不知道修改哪个。疑似右下角的那个。

[tengfei]

应是右下角那个要改吧，而且0.9.3命名完全改变了，具体请运行下面命令看典型的2*2的图形

library(ggplot2)
mt <- with(mtcars, mtcars[(gear == 4 | gear == 3) & (carb == 4 | carb == 1) , ])
p <- qplot(data = mt, x = wt, my = mpg, facets = gear ~ carb)
library(gtable)
g <- ggplotGrob(p)
g

g
TableGrob (9 x 8) "layout": 16 grobs
z cells name grob
1 0 (1-9,1-8) background rect[plot.background.rect.808]
2 1 (3-3,4-4) strip-top absoluteGrob[strip.absoluteGrob.738]
3 2 (3-3,6-6) strip-top absoluteGrob[strip.absoluteGrob.744]
4 7 (4-4,3-3) axis-l absoluteGrob[GRID.absoluteGrob.714]
5 8 (6-6,3-3) axis-l absoluteGrob[GRID.absoluteGrob.720]
6 3 (4-4,4-4) panel gTree[GRID.gTree.758]
7 4 (6-6,4-4) panel gTree[GRID.gTree.786]
8 5 (4-4,6-6) panel gTree[GRID.gTree.772]
9 6 (6-6,6-6) panel gTree[GRID.gTree.800]
10 9 (4-4,7-7) strip-right absoluteGrob[strip.absoluteGrob.726]
11 10 (6-6,7-7) strip-right absoluteGrob[strip.absoluteGrob.732]
12 11 (7-7,4-4) axis-b absoluteGrob[GRID.absoluteGrob.702]
13 12 (7-7,6-6) axis-b absoluteGrob[GRID.absoluteGrob.708]
14 13 (8-8,4-6) xlab text[axis.title.x.text.802]
15 14 (4-6,2-2) ylab text[axis.title.y.text.804]
16 15 (2-2,4-6) title text[plot.title.text.806]

library(grid)
gtable_show_layout(g)