为什么我的条形图中的y轴没有完全显示？

Question

我不知道如何更改代码，以便barPlot中的y轴完全显示？我希望它显示为10，因为我的数据点数为9.2，但最多只显示8个。任何想法是什么黑客？

这是代码：

以下是它的内容：

Answer 1

只需设置ylim = c(0, 10)，就像更改xlim

一样

默认情况下，无论是哪个轴都没有绘制，所以垂直条形图不会有x轴;水平不会有y轴。你当然可以添加它。使用barplot的返回值：

par(mfrow = c(2, 1))
bp <- barplot(c(8, 5), width = .5, main = 'Feature Exploration', xlim = c(0,4), ylim = c(0, 10),
              ylab = 'Errors (%)', xlab = 'ML Models', col = c('gray27','orangered4'))

## this will draw the x-axis but at points 1, 2, 3, ... which is not
## where the centers of your bars are plotted; you get that info in bp
axis(1)

bp <- barplot(c(8, 5), width = .5, main = 'Feature Exploration', xlim = c(0,4), ylim = c(0, 10),
              ylab = 'Errors (%)', xlab = 'ML Models', col = c('gray27','orangered4'))

## so try again with a fancy axis, bp is a matrix containing the centers
## of the plotted bars
axis(1, at = bp, labels = c('Model1','Model2'), lwd = 0, lwd.ticks = 1, tcl = -.5)