如何解决有限xlim值错误？

Question

我对R相对较新，我有一个包含平均组大小的数据集，我认为这可能是问题所在。我在csv文件中有它们，例如，它们的类型为'1-3‘和'4-6’。当我尝试使用下面的代码来绘制时：

plot(mydata$Group.Size, mydata$Time.spent.vigilant..seconds., xlab="Group size", ylab="Time spent vigilant, seconds", main="Group size vs time spent vigilant")

我得到了错误

Error in plot.window(...) : need finite 'xlim' values
In addition: Warning messages:
1: In min(x) : no non-missing arguments to min; returning Inf
2: In max(x) : no non-missing arguments to max; returning -Inf
3: In min(x) : no non-missing arguments to min; returning Inf
4: In max(x) : no non-missing arguments to max; returning -Inf

我试图扩展我的绘图窗口，但仍然出现错误。

Answer 1

当应用于NULL时，min()返回Inf

min(NULL)
[1] Inf
Warning message:
In min(NULL) : no non-missing arguments to min; returning Inf

检查mydata中是否存在$Time.spent.vigilant..seconds.

如果不是：

plot(mtcars$banana)

Error in plot.window(...) : need finite 'xlim' values
In addition: Warning messages:
1: In min(x) : no non-missing arguments to min; returning Inf
2: In max(x) : no non-missing arguments to max; returning -Inf
3: In min(x) : no non-missing arguments to min; returning Inf
4: In max(x) : no non-missing arguments to max; returning -Inf