Question

将我的CSV文件上传到r时，数据行中会添加一行和一列，尽管CSV文件中这些行为空。数据框应具有2005 obs。和49个变量。但是，在上传时，它会导致带有2006 obs的数据框。和50个变量。另外，在上传后，某些字段由r填充为NA。

这是我用于将文件上传到r中的代码：

Dev_REITs_MTBV <- read.csv2("Developed_REITS_MTBV.csv", na="NA")

这是csv文件：

代码在上传前运行：

pkgs <- c("readxl","akima","rgl","scatterplot3d","car","MASS","ISLR","stargazer","urca","rpart","ggplot2","e1071","randomForest",
          "quantreg","mgcv","gamlss","rlang","gplots","psych","ggridges","viridis","caTools","caret","forecast", "shape", "diagram", 
          "writexl", "openxlsx", "maptools", "ggridges", "calibrate", "modelr", "XLConnect")
for (pkg in pkgs) {if (! (pkg %in% rownames(installed.packages()))) { install.packages(pkg) }}
lapply(pkgs, require, character.only = TRUE)

以下是我输入的CSV行和列以及生成的数据框的图片：

Empty row CSV

Empty column CSV

Unwanted data frame row

Unwanted data frame column

非常感谢您的帮助！

Answer 1

您是否尝试过tidyverse中的read_csv()？如果没有实际文件，可能很难进行故障排除，但是仅尝试另一个软件包就可以解决。您也可以尝试从data.table包中fread()

稍后编辑/添加：

您的数据非常混乱（用'，'代替'。'作为小数点分隔符，而';'和列分隔符，在最后一列中有一堆尾随逗号，并以数字（年）作为变量名）。但是，此代码应解决此问题：

library(tidyverse) # you need dplyr 1.0.0 or later

# load data
dataset <- read_delim("Developed_REITS_MTBV.csv", delim = ";") %>%
  # rename final column
  rename(`2019` = `2019,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,`) %>%
  # delete all trailing commas in last column (but not the first one)
  mutate(`2019` = gsub("^,*|(?<=,),|,*$", "", `2019`, perl = T)) %>%
  # name the year columns numeric after switching the commas to points
  mutate(across(c(`1980`:`2019`), ~as.numeric(gsub(",", ".", .))))

部分代码来自：Removing multiple commas and trailing commas using gsub

R插入1个其他obs。和1个其他变种读csv时

1 个答案: