r - X axis label is not showing in clustering dendrogram in ggplot -


i have done clustering dendrogram following previous code found online, x-axis of not being shown in graph. have dissimilarity value shown in x-axis, have not been successful.

females<-cervidae[cervidae$sex=="female",] dstf   <- daisy(females[,9:14], metric = "euclidean", stand = false) hcaf   <- hclust(dstf, method = "ave") k     <- 3 clustf <- cutree(hcaf,k=k)  # k clusters   dendrf    <- dendro_data(hcaf, type="rectangle") # convert ggplot clust.dff <- data.frame(label=rownames(females), cluster=factor(clustf),  females$genus, females$species)  dendrf[["labels"]]   <- merge(dendrf[["labels"]],clust.dff, by="label") rectf <- aggregate(x~cluster,label(dendrf),range) rectf <- data.frame(rectf$cluster,rectf$x) ymax <- mean(hcaf$height[length(hcaf$height)-((k-2):(k-1))])   fem=ggplot() +     geom_segment(data=segment(dendrf), aes(x=x, y=y, xend=xend, yend=yend)) +     geom_text(data=label(dendrf), aes(x, y, label= females.genus, hjust=0,     color=females.genus),         size=3) +    geom_rect(data=rectf, aes(xmin=x1-.3, xmax=x2+.3, ymin=0, ymax=ymax),          color="red", fill=na)+    coord_flip() + scale_y_reverse(expand=c(0.2, 0)) +     theme_dendro() + scale_color_discrete(name="genus") +     theme(legend.position="none")

here how dendrogram looks:

enter image description here

your code included theme_dendro(), described in file as:

sets of ggplot options blank, returning blank theme elements panel grid, panel background, axis title, axis text, axis line , axis ticks.

you force x-axis line / text / ticks visible in theme():

ggplot() +    geom_segment(data=segment(dendrf), aes(x=x, y=y, xend=xend, yend=yend)) +   geom_text(data=label(dendrf), aes(x, y, label= label, hjust=0,                                     color=cluster),             size=3) +   geom_rect(data=rectf, aes(xmin=x1-.3, xmax=x2+.3, ymin=0, ymax=ymax),             color="red", fill=na)+   coord_flip() +   scale_y_reverse(expand=c(0.2, 0)) +    theme_dendro() +   scale_color_discrete(name="cluster") +   theme(legend.position="none",         axis.text.x = element_text(),  # show x-axis labels         axis.ticks.x = element_line(), # show x-axis tick marks         axis.line.x = element_line())  # show x-axis lines

ggdendro

(this demonstration uses built-in dataset, since i'm not sure what's cervidae. code used create reproduced below:)

library(cluster); library(ggdendro); library(ggplot2)  hcaf   <- hclust(dist(usarrests), "ave") k     <- 3 clustf <- cutree(hcaf,k=k)  # k clusters  dendrf    <- dendro_data(hcaf, type="rectangle") # convert ggplot clust.dff <- data.frame(label=rownames(usarrests),                          cluster=factor(clustf))  dendrf[["labels"]]   <- merge(dendrf[["labels"]],clust.dff, by="label") rectf <- aggregate(x~cluster,label(dendrf),range) rectf <- data.frame(rectf$cluster,rectf$x) ymax <- mean(hcaf$height[length(hcaf$height)-((k-2):(k-1))])

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