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r - 如何在 R 中导入多个 txt 文件并添加新标题？

问题描述

我有 8 个没有标题的文本文件全部保存，我的目标是将它们全部读入并将它们合并到一个文件中。我还想添加列名，但不断收到错误消息。到目前为止，我的代码是：

txt_files_ls = list.files(path=mypath, pattern="*.txt")


txt_files_df <- lapply(txt_files_ls, function(x) {read.table(file = x, header = F, sep ="\t",colnames(x))})


combined_df <- do.call("rbind", lapply(txt_files_df, as.data.frame)) 

colnames(combined_df)<-c("INSUR","POLICY","STREET","STREETPRED","STREETNAME","STREETTYPE","STREETPOSTD","STREETADD2","CITY","STATE","ZIP","ZIP4","EFFDATE","POLTYPE","PREM","FILL", "BVAMOUNT","Full","COUNT")

我一直收到此错误：名称错误（x）<-值：'names'属性[19]必须与向量[1]的长度相同

但我知道这些都是列并且它们是相同的。

我还试图有一个列，其中包含文本文件来自的 ID，但这是一个单独的问题。谢谢看到这个的人

标签： rimporttext-files

解决方案

尝试这个：

txt_files_ls <- paste(mypath, list.files(path = mypath, pattern = "*.txt"), sep = "/")
txt_files_df_list <- vector("list", length(txt_files_ls))
txt_files_df_list <- lapply(txt_files_ls, 
                       function(x){data.frame(read.table(file = x, header = F,
                                                         sep ="\t",colnames(x)))})
combined_df <- setNames(do.call("rbind", txt_files_df_list),
                        c("INSUR", "POLICY","STREET","STREETPRED","STREETNAME",
                          "STREETTYPE","STREETPOSTD","STREETADD2","CITY","STATE",
                          "ZIP","ZIP4","EFFDATE","POLTYPE","PREM","FILL", "BVAMOUNT",
                          "Full","COUNT"))

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