我想使用 geom_signif 在我的条形图中创建一个重要的层,就像我附加的条形图一样,我只想比较工作区(即 MID、NMC 和 CML)内测试前后的差异。例如,仅比较 MID 的前后测试,对 NMC 和 CML 进行相同的比较。我尝试过,但看起来我做错了什么
tgc <- structure(list(Workspace = structure(c(1L, 1L, 2L, 2L, 3L, 3L
), .Label = c("MID", "NMC", "CML"), class = "factor"), Time = structure(c(1L,
2L, 1L, 2L, 1L, 2L), .Label = c("Pretest", "Posttest"), class = "factor"),
N = c(24, 24, 24, 24, 24, 24), EndpointError = c(2.85950807291667,
0.8204433125, 2.86077222916667, 0.937923947916667, 3.26658860416667,
1.12849661458333), sd = c(0.797084414369766, 0.601614858238859,
0.624571419971566, 0.88787261995896, 0.800703365914924, 1.04237568245573
), se = c(0.162704174760923, 0.122804118696837, 0.12749010723799,
0.181236239623958, 0.163442890151714, 0.212774045191827),
ci = c(0.336579229366135, 0.254039674733015, 0.263733380591008,
0.374915726381832, 0.338107378581228, 0.440156647885719)), row.names = c(NA,
-6L), class = "data.frame")
p <- ggplot(tgc, aes(x = Workspace, y = EndpointError, fill = Time)) +
geom_errorbar(aes(ymin=EndpointError-se, ymax=EndpointError+se), position = position_dodge(0.5), width=.1) +
geom_bar(aes(fill = Time), stat = "identity", width = 0.5, color = "black", position='dodge') + theme_bw() + theme(
axis.text.x = element_text(size = 12,face="bold"),#, angle = 10, hjust = .5, vjust = .5),
axis.text.y = element_text(size = 12, face = "bold"),
axis.title.y = element_text(vjust= 1.8, size = 14),
axis.title.x = element_text(vjust= -0.5, size = 14),
axis.title = element_text(face = "bold")) + xlab("Workspace") + ylab("Endpoint error (cm)") + theme(legend.position="right")
p + theme(aspect.ratio = 3/2)
p +
geom_signif(comparisons = list(c("Time", "Workspace")),
map_signif_level = TRUE)[![enter image description here][1]][1]