我的数据集中有 34 个变量。我正在尝试为每个变量制作箱线图。我也想使用对数 Y 轴。这是我的 R 代码：
boxplot(mydata,log="y")
#Warning message:
#In plot.window(xlim = xlim, ylim = ylim, log = log, yaxs = pars$yaxs) :
# nonfinite axis limits [GScale(-inf,3.61878,2, .); log=1]
您能帮我纠正一下吗？另外，我需要这张图中的所有变量名称。
【问题讨论】：
mydata 长什么样子，所以这是一个刺，但是你拿mydata 的日志时有非有限的数字吗？即，任何带有0... 例如boxplot(0:10, log='y').
问题是在您的“mydata”中有包含的变量 “0”值。对于零值，y 轴的对数重新缩放 提供“-Inf”
log(0)
[1] -Inf
# I tried to reproduce your example:
library(datasets)
data(airquality)
x <- airquality
boxplot(x, log="y") # works fine!
# Now I'm going to manipulate the data by changing the first value of dataset.
x[1,1] <- 0
boxplot(x, log="y")
Warning message:
In plot.window(xlim = xlim, ylim = ylim, log = log, yaxs = pars$yaxs) :
nonfinite axis limits [GScale(-inf,2.52375,2, .); log=1]
# To solve this problem I would suggest to replace all "0"-values to
# "1" values. Why? Because after you want to build log-values, and log(1)=0
x[(x == 0)] <- 1
boxplot(x, log="y") # It works fine!
【讨论】：