ggplot2中标签文本条目中不同的字体和大小

我正在构建轴文本中有两行的图表。 第一行包含组名,第二行包含该组人口。 我使用格式“LINE1 n LINE2”将我的轴标签构建为单个字符串。 是否可以为LINE1和LINE2分配不同的字体大小和大小,即使它们包含在单个字符串中? 我想让LINE1变大变粗,而LINE2变小变大。

以下是一些示例代码:

Treatment <- rep(c('T','C'),each=2)
Gender <- rep(c('Male','Female'),2)
Response <- sample(1:100,4)
test_df <- data.frame(Treatment, Gender, Response)

xbreaks <- levels(test_df$Gender)
xlabels <- paste(xbreaks,'n',c('POP1','POP2'))

hist <- ggplot(test_df, aes(x=Gender, y=Response, fill=Treatment, stat="identity"))
hist + geom_bar(position = "dodge") + scale_y_continuous(limits = c(0, 
    100), name = "") + scale_x_discrete(labels=xlabels, breaks = xbreaks) + 
    opts(
      axis.text.x = theme_text(face='bold',size=12)
      )

我试了一下,但结果是一个粗大的粗体条目和一个小的unbolded条目:

hist + geom_bar(position = "dodge") + scale_y_continuous(limits = c(0, 
     100), name = "") + scale_x_discrete(labels=xlabels, breaks = xbreaks) + 
     opts(
      axis.text.x = theme_text(face=c('bold','plain'),size=c('15','10'))
     )

另一个可能的解决方案是创建单独的图表元素,但我不认为ggplot2有一个'sub-axis label'元素可用...

任何帮助将非常感激。

干杯,亚伦


我也认为我不能仅通过使用ggplot2功能来制作图表。

我会使用grid.textgrid.gedit

require(ggplot2)
Treatment <- rep(c('T','C'), each=2)
Gender <- rep(c('Male','Female'), 2)
Response <- sample(1:100, 4)
test_df <- data.frame(Treatment, Gender, Response)

xbreaks <- levels(test_df$Gender)
xlabels <- paste(xbreaks,'n',c('',''))

hist <- ggplot(test_df, aes(x=Gender, y=Response, fill=Treatment,
  stat="identity"))
hist + geom_bar(position = "dodge") + 
  scale_y_continuous(limits = c(0, 100), name = "") +
  scale_x_discrete(labels=xlabels, breaks = xbreaks) + 
  opts(axis.text.x = theme_text(face='bold', size=12))
grid.text(label="POP1", x = 0.29, y = 0.06)
grid.text(label="POP2", x = 0.645, y = 0.06)
grid.gedit("GRID.text", gp=gpar(fontsize=8))

请尝试根据您的环境调整代码(例如,子轴标签的位置和字体大小)。


我发现了另一个简单的解决方案

require(ggplot2)
Treatment <- rep(c('T','C'),each=2)
Gender <- rep(c('Male','Female'),2)
Response <- sample(1:100,4)
test_df <- data.frame(Treatment, Gender, Response)

xbreaks <- levels(test_df$Gender)
xlabels[1] <- expression(atop(bold(Female), scriptstyle("POP1")))
xlabels[2] <- expression(atop(bold(Male), scriptstyle("POP2")))

hist <- ggplot(test_df, aes(x=Gender, y=Response, fill=Treatment,
stat="identity"))
hist +
  geom_bar(position = "dodge") +
  scale_y_continuous(limits = c(0, 100), name = "") +
  scale_x_discrete(label = xlabels, breaks = xbreaks) +
  opts(
    axis.text.x = theme_text(size = 12)
  )


所有,

使用黑社会的作弊,这是我能够得到解决这个最接近的。 如果您有任何问题,请告知我们:

library(ggplot2)

spacing <- 0 #We can adjust how much blank space we have beneath the chart here

labels1= paste('Group',c('A','B','C','D'))
labels2 = rep(paste(rep('n',spacing),collapse=''),length(labels1))
labels <- paste(labels1,labels2)

qplot(1:4,1:4, geom="blank") +
 scale_x_continuous(breaks=1:length(labels), labels=labels) + xlab("")+
 opts(plot.margin = unit(c(1, 1, 3, 0.5), "lines"),
      axis.text.x = theme_text(face='bold', size=14))

xseq <- seq(0.15,0.9,length.out=length(labels)) #Assume for now that 0.15 and 0.9 are      constant plot boundaries

sample_df <-  data.frame(group=rep(labels1,each=2),subgroup=rep(c('a','b'),4),pop=sample(1:10,8))
    popLabs <- by(sample_df,sample_df$group,function(subData){
    paste(paste(subData$subgroup,' [n = ', subData$pop,']',sep=''),collapse='n')
})

gridText <- paste("grid.text(label='n",popLabs,"',x=",xseq,',y=0.1)',sep='')

sapply(gridText, function(x){ #Evaluate parsed character string for each element of gridText
  eval(parse(text=x))
})

grid.gedit("GRID.text", gp=gpar(fontsize=12))

干杯,亚伦

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