可以通过ggplot（geom_line）在同一网格中显示两个变量图例吗？

Question

首先，很抱歉描述不准确，因为我不是母语人士:(

我非常努力地使用 ggplot 作为工具来绘制这样的图像（也是由 R 在 plot {graphics} 函数中编写的）： 因为我想练习 ggplot 所以我尝试画同一个，结果证明这是我能做的最好的......如果删除这些 exp 变量（exp1，exp2），我无法将这些facet_grid(. ~ Exp)，错误或错误：geom_path: If you are using dotted or dashed lines, colour, size and linetype must be constant over the line。

这是我的代码：

allDraw %>% ggplot(aes(x=PrimeType, y=mRT, shape=SOA,linetype=SOA,group=SOA,color=Exp))+
  geom_line(size=0.5,alpha=0.6) +
  scale_colour_manual(values = c('black', 'blue'))+
  scale_linetype_manual(values=c("solid", "twodash"))+
  labs(y='RT', title= 'RT on Prime Types & SOA')+
  ylim(c(600,900))+
  geom_point(size = 2)+ 
  facet_grid(. ~ Exp)+ #if delete this line the image fails to show
  geom_errorbar(aes(ymin = mRT - SE, ymax = mRT + SE), width = .1, size=0.6, alpha=0.6)

#dataset (not sure if this way of pasting data is right...)

> dput(allDraw)
structure(list(PrimeType = c("Control", "Control", "Homophone", 
"Homophone", "Semantic", "Semantic", "Control", "Control", "Homophone", 
"Homophone", "Semantic", "Semantic"), SOA = structure(c(1L, 2L, 
1L, 2L, 1L, 2L, 1L, 2L, 1L, 2L, 1L, 2L), .Label = c("85", "150"
), class = "factor"), mRT = c(775.085416666667, 762.44, 779.744166666667, 
753.494166666667, 741.287083333333, 725.580833333333, 792.747916666667, 
798.07125, 706.307916666667, 700.527916666667, 800.543333333333, 
771.0625), N = c(24L, 24L, 24L, 24L, 24L, 24L, 24L, 24L, 24L, 
24L, 24L, 24L), SE = c(20.1588447968423, 23.9092193121386, 20.4126104540678, 
22.2091770912669, 15.9753977914136, 22.6038502469004, 27.3474259511178, 
28.550485720839, 19.48170159647, 24.2353984949669, 35.3326209440763, 
25.6053095168346), Exp = structure(c(1L, 1L, 1L, 1L, 1L, 1L, 
2L, 2L, 2L, 2L, 2L, 2L), .Label = c("1", "2"), class = "factor")), row.names = c(NA, 
-12L), class = c("tbl_df", "tbl", "data.frame"))

这是我的数据集（代码中的“allDraw”）

PrimeType	SOA	mRT	N	SE	Exp
Control	85	775.0854166666670	24	20.158844796842300	1
Control	150	762.4400000000000	24	23.909219312138600	1
Homophone	85	779.7441666666670	24	20.412610454067800	1
Homophone	150	753.4941666666670	24	22.209177091266900	1
Semantic	85	741.2870833333330	24	15.975397791413600	1
Semantic	150	725.5808333333330	24	22.603850246900400	1
Control	85	792.7479166666670	24	27.347425951117800	2
Control	150	798.07125	24	28.55048572083900	2
Homophone	85	706.3079166666670	24	19.48170159647000	2
Homophone	150	700.5279166666670	24	24.23539849496690	2
Semantic	85	800.5433333333330	24	35.33262094407630	2
Semantic	150	771.0625	24	25.605309516834600	2

希望有人知道一些方法来绘制像ggplot 的第一张图片一样的情节。

Answer 1

只需将组更改为类似paste(SOA, Exp)

allDraw %>% ggplot(aes(x=PrimeType, y=mRT, shape=SOA,linetype=SOA,group=paste(SOA, Exp),color=Exp))+
  geom_line(size=0.5,alpha=0.6) +
  scale_colour_manual(values = c('black', 'blue'))+
  scale_linetype_manual(values=c("solid", "twodash"))+
  labs(y='RT', title= 'RT on Prime Types & SOA')+
  ylim(c(600,900))+
  geom_point(size = 2)+ 
  #facet_grid(. ~ Exp)+ #if delete this line the image fails to show
  geom_errorbar(aes(ymin = mRT - SE, ymax = mRT + SE), width = .1, size=0.6, alpha=0.6)