t检验错误 [英] Error with t-test

问题描述

我的正常t检验有误:

  data <- read.table("/Users/vdas/Documents/RNA-Seq_Smaples_Udine_08032013/GBM_29052013/UD_RP_25072013/filteredFPKM_matrix.txt",sep="",header=TRUE,stringsAsFactors=FALSE)

  PGT <- cbind(data[,2],data[,7],data[,24])
  PDGT <- cbind(data[,6],data[,8])
  pval2 <- NULL
  for(i in 1:length(PGT[,1])){
     pval2 <- c(pval2,t.test(as.numeric(PDGT[i,]),as.numeric(PGT[i,]))$p.value)
     print(i)
  }

错误:

Error in t.test.default(as.numeric(PDGT[i, ]), as.numeric(PGT[i, ])) : 
  not enough 'x' observations

我无法理解向量出了什么问题.你能告诉我吗?我还没弄清楚.

I cannot understand what went wrong with the vector. Can you please tell me? I have not been able to figure it out .

推荐答案

您的数据很可能具有NA值.例如:-

Most likely your data have NA values. For example: -

x<-rep(NA,4)
t.test(x)

Error in t.test.default(x) : not enough 'x' observations

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