R箱线图；在刻度线下居中轴标签答案

【问题标题】：R boxplot; center the axis labels under the tick marksR箱线图；在刻度线下居中轴标签
【发布时间】：2018-02-22 19:27:26
【问题描述】：

我使用以下代码绘制了一个数据框（16700 个变量，共 6 个变量）：

labels <–c("X2137_Fe20","X2137_FeXS","vtc1_Fe20",
"vtc1_FeXS","VTC1c_Fe20","VTC1c_FeXS") #labels x axis
[1]col <- c("chartreuse3", "chocolate2", "chartreuse3", "chocolate2", 
"chartreuse3", "chocolate2") #colors

#Plot
boxplot(CVtable, 
    outline = FALSE, 
    ylim = c(-0.5,70), 
    main="CV Replicas",
    ylab="RSD(%)",
    range = 1.5,
    width = c(9,9,9,9,9,9),
    plot = TRUE,
    col = col,
    par (mar = c(5,4.5,5,0.5) + 0.1), 
    par(cex.lab=2), 
    par(cex.axis=1.7), 
    notch = TRUE,
    labels = labels)
dev.off()

This is the result

我喜欢这个箱形图，但有几件事我想调整。我需要为 x 轴标签保留这个字体大小，但正如您所见，标签太大，其中一部分被遗漏了。解决方案是将它们旋转 45 度，但我无法找到一个简单的代码插入到我的脚本中。

我试图删除原来的轴 (axes=FALSE)，然后设置新的轴

boxplot(CVtable, 
    outline = FALSE, 
    ylim = c(0.5,70), 
    ylab="RSD(%)",
    range = 1.5,
    width = c(9,9,9,9,9,9),
    plot = TRUE,
    col = col,
    par (mar = c(5,4.5,5,0.5) + 0.1), 
    notch = TRUE,
    par(cex.lab=1.7),
    axes=FALSE)

axis(1, at = c(1,2,3,4,5,6), labels = F, tick = 2, line = NA,
 pos = -1, outer = F, font = 3, lty = "solid",
 lwd = 2, lwd.ticks = 3, col = NULL, col.ticks = NULL,
 hadj = NA, padj = 0)

axis(2, at = c(0,10,20,30,40,50,60,70) , labels = 
 c(0,10,20,30,40,50,60,70), tick = 2, line = NA,
 pos = 0.5, outer = FALSE, font = 1, lty = "solid",
 lwd = 2, lwd.ticks = 3, col = NULL, col.ticks = NULL,
 hadj = NA, padj = 0, par(cex.lab=1.5))

text(x=c(1,2,3,4,5,6), 
 y=par()$usr[3]-0.1*(par()$usr[4]-par()$usr[3]),
 labels=labels, srt=45, adj=1, xpd=TRUE, par(cex.lab=2))

这是输出：img2 好吧，我不知道如何将我的标签置于刻度线下方，以及如何将 x 轴延伸到图形的原点（左）和最后一个框的末端（右）。此外，用于修复 x 轴标签字体大小的参数 par(cex.lab=2) 似乎不再适用于该字符串。

有什么好的建议吗？

PS：这是我的第一篇文章，如有遗漏，请留言，我会尽快回复。谢谢！

【问题讨论】：

标签： r boxplot par labeling

【解决方案1】：

我自己做的：

 #RSD
boxplot(CVtable[1:6], 
    outline = FALSE,
    ylim = c(0.5,70), 
    ylab="RSD(%)",
    range = 1.5,
    width = c(9,9,9,9,9,9),
    plot = TRUE,
    col = col,
    par (mar = c(7,4.5,1,0.5) + 0.1),  
    notch = TRUE,
    par(cex.lab=1.7),
    axes=FALSE)

axis(1, at = c(0.5,1,2,3,4,5,6,7), labels = F, tick = 2, line = NA,
 pos = -1, outer = F, font = 3, lty = "solid",
 lwd = 2, lwd.ticks = 3, col = NULL, col.ticks = NULL,
 hadj = NA, padj = 0)

axis(2, at = c(0,10,20,30,40,50,60,70) , labels = 
c(0,10,20,30,40,50,60,70), tick = 2, line = NA,
 pos = 0.5, outer = FALSE, font = 4, lty = "solid",
 lwd = 2, lwd.ticks = 3, col = NULL, col.ticks = NULL,
 hadj = NA, padj = 0, par(cex=1.4))

text(x=c(0.7,1.7,2.7,3.7,4.7,5.7), 
 y=par()$usr[3]-0.14*(par()$usr[4]-par()$usr[3]),
 labels=labels, srt=45, adj=0.6, xpd=TRUE, cex=1, font=2)

dev.off()

这是结果：

【讨论】：