GGally错误：单位错误（tic_pos.c，“mm”）：'x'和'units'必须有长度＆gt; 0

Question

我试图为我的数据集生成一个可以找到的图here

有13个属性，第13个属性是类。第一个属性只是ID，所以我想忽略它。

我尝试像这样创建图表，但我收到了错误

> ggpairs(wine[2:13], columns=2:12,
+         colour='q', lower=list(continuous='points'),
+         axisLabels='none',
+         upper=list(continuous='blank'))
Error in unit(tic_pos.c, "mm") : 'x' and 'units' must have length > 0

Answer 1

首先你的列错了，然后你得到的颜色错了，这就是上面的错误：

代码应如下所示，我将其拆分一点以使其更有意义：

#load data
wine <- read.csv("wine_nocolor.csv")
#remove first column
wine1 <- wine[2:13]
#The colour column needs to be of factor class
wine1$q <- factor(wine1$q)

library(GGally)
#and now you need to pick the correct columns i.e. from 1 to 11 as you don't 
#need the last column
ggpairs(wine1, columns=1:11,
        colour='q',lower=list(continuous='points'),
        axisLabels='none',
        upper=list(continuous='blank'))

将颜色列作为因子并选择正确的列可得到您想要的输出：