r - 在文件中获取错误(文件， "rt"): cannot open the connection

Question

我正在运行以下代码...

#Create a list of all the files
file.list <- list.files(path="~/R/natural-language-processing/class-notes", pattern=".csv")

#Loop over file list importing them and binding them together
D1 <- do.call("rbind",lapply(file.list, read.csv, header = TRUE, stringsAsFactors = FALSE))

这是我在运行上面的 do.call 行时遇到的错误。

Error in file(file, "rt") : cannot open the connection

我试过重置我的 wd。我当前的 getwd() 是

~/R/natural-language-processing

我看过其他的

Error in file(file, “rt”): cannot open connection

Answer 1

很可能您正在尝试从工作目录而不是您调用 list.files 的目录打开文件。而是尝试

D1 <- do.call("rbind",
              lapply(paste0("~/R/natural-language-processing/class-notes/",
                            file.list),
                     read.csv, header = TRUE, stringsAsFactors = FALSE))

或者，您可以在 list.files 中将 full.names 参数设置为 TRUE 以获取完整路径:

file.list <- list.files(path="~/R/natural-language-processing/class-notes", 
                        pattern=".csv", full.names = TRUE)