本文介绍了tryCatch似乎没有返回我的变量的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧! 问题描述 29岁程序员,3月因学历无情被辞! 我试图使用tryCatch生成一个p值的列表,矩阵中有几行没有足够的t检验观察结果。这是我迄今为止生成的代码:I'm trying to use tryCatch to generate a list of p-values there are several rows in the matrix that don't have enough observations for a t test. Here is the code I generated so far:pValues <- c()for(i in row.names(collapsed.gs.raw)){ tryCatch({ t <- t.test(as.numeric(collapsed.gs.raw[i,]) ~ group) pValues <- c(pValues, t$p.value) }, error = function(err) { pValues <- c(pValues, "NA") message("Error") return(pValues) })}它肯定会抛出一个错误[我放入消息(错误)行确认]。问题是矢量pValues没有任何NA,虽然它应该。It definitely throws an error [I put in the message("Error") line to confirm]. The problem is that the vector pValues doesn't have any "NA" in it, though it should.提前感谢您的帮助!推荐答案您的函数中的 pvalues 是一个局部变量。您可能可以用< 来解决这个问题,但最好让函数只返回一个所需的值,并将其收集到函数外部, code> sapply 。可能是(未经测试):The pvalues in your function is a local variable. You might be able to fix this with <<-, but it would be preferred to have the function just return the one desired value and collect them outside the function with sapply. Perhaps something like (untested):pValues <- sapply(rownames(collapsed.gs.raw), function(i) { tryCatch({ t.test(as.numeric(collapsed.gs.raw[i,]) ~ group)$p.value }, error = function(err) { message("Error") return(NA) })}) 这篇关于tryCatch似乎没有返回我的变量的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持! 上岸,阿里云! 07-03 00:05