yanbridge 发表于 2018-8-16 23:22 
试一试下面代码
细节方面自己再设定
这么画还是有问题,date我已经as.Date了,plot画出来的报错,显示正无穷,负无穷,,
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