r - 带有标签地毯的ggplot2箱线图

Question

我可以用 ggplot2 制作这样的情节吗？

# data
require(vegan)
data(dune)
data(dune.env)

# RDA
RDA <- rda(dune ~ A1, data = dune.env)

# extract species scores
df <- data.frame(spec_scores = scores(RDA)$species[ , 1], 
                 taxa = rownames(scores(RDA)$species))
df <- df[abs(df$spec_scores) > 0.05, ]

# plot
par(mar = c(5,4,4,8))
# boxplot of sites-scores along A1-axis
boxplot(scores(RDA)$sites[ , 1] ~ dune.env$Management)
abline(h = 0, lty = "dotted")

# add species scores to plot
rug(df$spec_scores, side=4)
linestack(df$spec_scores, labels=df$taxa, at = par("usr")[2], add = TRUE, hoff = 1)

基本上我正在寻找一种如何在箱线图下方绘制标记地毯的方法。

有什么提示或建议吗？

Answer 1

这是仅使用的解决方案ggplot2，因此它不是最优雅的解决方案。

我按照@Eric Fail 的建议开始了第一步。

require(vegan)
data(dune)
data(dune.env)

# RDA
RDA <- rda(dune ~ A1, data = dune.env)

# extract species scores
df1 <- data.frame(RDA.scores = scores(RDA)$sites[ , 1], Management = dune.env$Management)
df2 <- data.frame(y = scores(RDA)$species[ , 1], taxa = rownames(scores(RDA)$species))
# Order data according to species scores
df2<-df2[order(df2$y),]

# define values for rugs (segments). 4.9 and 5.0 used because data has 4 levels (+1)
df2$x=4.9
df2$xend=5

# define coordinates for names (30 is number of species)
df2$yend2<-seq(min(df1$RDA.scores),max(df1$RDA.scores),length.out=30)
df2$xend2=5.3

# plot
P <- ggplot(data = df1, aes( x = Management, y = RDA.scores) ) + 
     geom_segment(y=0,yend=0,x=0,xend=5, lty=2, size = I(0.3)) + 
     geom_boxplot() + 
     #add extra levels to get space
     scale_x_discrete(limits=c("BF", "HF", "NM", "SF", "","")) + 
     #set y scale
     scale_y_continuous(limits=c(-3,5),expand=c(0,0)) +
     #add rugs as segments and add segments connecting rugs and texts
     geom_segment(data= df2, mapping=aes(x=x,xend=xend,y=y,yend=y), size = I(0.3)) +
     geom_segment(data= df2, mapping=aes(x=xend,xend=xend2,y=y,yend=yend2), size = I(0.4)) +
     #add texts
     geom_text(data=df2,mapping=aes(x=xend2+0.1,y=yend2,label=taxa),hjust=0, size=3) +
     #add rectangular to imitate box around plot
     geom_rect(xmax=5,xmin=0.4,ymax=5,ymin=-3,colour="black",fill=NA)

# Final adjustments of plot
P+theme(axis.line=element_blank(),
        panel.grid=element_blank(),
        panel.background=element_blank())

Answer 2

我已经开始研究解决方案，但我有点卡住了。我发布它是希望铁杆数据可视化的人可以为真正的解决方案做出贡献（如果这不是这样做的方法，请告诉我，我将删除这个半生不熟的项目）。

# data
require(vegan)
data(dune)
data(dune.env)

# RDA
RDA <- rda(dune ~ A1, data = dune.env)

# extract species scores
df1 <- data.frame(RDA.scores = scores(RDA)$sites[ , 1], Management = dune.env$Management)
df2 <- data.frame(spec_scores = scores(RDA)$species[ , 1], taxa = rownames(scores(RDA)$species))
df2 <- df2[abs(df2$spec_scores) > 0.05, ]
df2 <- cbind(df2, x = rep(1:4, 6))

# plot
P <- ggplot(data = df1, aes( x = Management, y = RDA.scores) ) + geom_boxplot() + theme_bw()  +geom_hline(y=0, lty=2) + geom_rug(data= df2, mapping=aes(x = x , y = spec_scores), sides="r") + geom_text(data= df2, mapping=aes(x=5, y=spec_scores, label=taxa), size=2) + xlim(c("BF", "HF", "NM", "SF", ""))
P