如何在ggplot geom_tile中修复/调整每个波段的宽度

Question

以下是我的问题的示例数据：

sampledata <- matrix(c(1:60,1:60,rep(0:1,each=60),sample(1:3,120,replace = T)),ncol=3)
colnames(sampledata) <- c("Time","Gender","Grade")
sampledata <- data.frame(sampledata)
sampledata$Time <- factor(sampledata$Time)
sampledata$Grade <- factor(sampledata$Grade)
sampledata$Gender <- factor(sampledata$Gender)

我正在使用geom_tile

从此示例数据绘制热图

color_palette <- colorRampPalette(c("#31a354","#2c7fb8", "#fcbfb8", "#f03b20"))(length((levels(factor(sampledata$Grade)))))
ggplot(data = sampledata) + geom_tile( aes(x = Time, y = Gender, fill = Grade))+scale_x_discrete(breaks = c("10","20","30","40","50"))+scale_fill_manual(values =color_palette,labels=c("0-1","1-2","2-3","3-4","4-5","5-6",">6"))+  theme_bw()+scale_y_discrete(labels=c("Female","Male"))

我得到了这张图：

我想分别调整男性和女性的宽度，以便为不同的性别获得不同的宽度。宽度的含义如下图所示：

是否可以通过更改当前代码来实现此目的？谢谢！

Answer 1

如果你想要＆＃34;宽度＆＃34;为了相同，您可以在height中使用geom_tile美学：

ggplot(data = sampledata) +
    geom_tile(aes(x = Time, y = Gender, fill = Grade, height = 0.25))

如果你想让它们独立，那么你需要传递sampledata data.frame相同长度的向量，也许最简单的方法是创建一个新变量：

# Assign Females a height of 0.25 and Males a height of 0.75
sampledata$myHeight = ifelse(sampledata$Gender == 0, 0.25, 0.75)

然后：

ggplot(data = sampledata) + 
  geom_tile(aes(x = Time, y = Gender, fill = Grade, height = myHeight))