小编Reb*_*bel的帖子

我有以下R函数,它检查一系列值并写出一个关于它们的句子.问题是,当我使用该函数然后调用它时,无论Value如何,所有句子都是相同的.

hover <- function (){
if(df$Value > 140 && df$Change < -0.05){
hovertext ="Price High, Level of Activity Low"
}else{
   if(df$Value < 140 && df$Change > 90 && df$YVoltage > -0.05 &&
      df$YVoltage < 0.30 ){
    hovertext ="Price Normal, Level of Activity normal"
      } else {
hovertext ="Price High, Level of Activity high"
      }
  }
}
hovertext <- hover ()
hovertext

关于如何解决这个问题的任何想法.

以下是示例数据:

TimeStamp,Price,Change
12:00:00,140,0.05
12:12:03,148,0.06
12:12:40,130,-0.05
12:12:50,135,0.01
12:13:00,135,0
12:13:10,1.37,0.01

这就是我目前所拥有的:

library (ggplot2)
df <- read.csv(file.choose(), header =TRUE) 
df
df$Price …