R - Rstudio - 如果产生警告/错误，使 R 播放声音 [英] R - Rstudio - make R play a sound if warning/error generated

问题描述

我正在运行一个循环遍历股票对组合列表的脚本......偶尔脚本会因配对组合之间不同数据长度产生的错误而停止运行，我只是从考虑中删除不匹配的股票):

I am running a script that loops over a list of stock pair combinations... occasionally the script stops running due to an error generated by differing data lengths between pair combo and I simply remove the mismatched stock from consideration):

Error in model.frame.default(formula = stckY ~ stckX + 0, drop.unused.levels = TRUE) : 
  variable lengths differ (found for 'stckX')

有什么方法可以让 R/Rstudio 在出现错误消息时播放声音，以便在脚本循环播放时无需将眼睛一直盯着屏幕就可以收到警报?

Is there any way I can make R / Rstudio play a sound when the error message occurs so that I can be alerted without having to keep my eyes on the screen while the script is looping along?

我可以使用以下方法线性生成声音:

I can generate sounds linearly using:

beep <- function(n = 3){
    for(i in seq(n)){
        system("rundll32 user32.dll,MessageBeep -1")
        Sys.sleep(.5)
    }
}
beep()

但是我如何以错误消息为条件执行此操作?

but how can I do this conditional on an error message?

推荐答案

基于@frankc 的回答和@hrbrmstr 的评论，一种方法:

Building on @frankc answer and @hrbrmstr comment, a way to do this:

install.packages("beepr")
library(beepr)
options(error = beep)

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