[英]Cannot read csv file with R
我有一個 csv 文件,看起來像:
,,,,,,,,
,,,,a,b,c,d,e
,,,"01.01.2022, 00:00 - 01:00",82.7,57.98,0.0,0.0,0.0
,,,"01.01.2022, 01:00 - 02:00",87.6,50.05,15.0,25.570000000000004,383.55000000000007
,,,"01.01.2022, 02:00 - 03:00",87.6,41.33,0.0,0.0,0.0
我想先導入表頭,然后是數據,最后將表頭插入到帶有數據的表的名稱中
file <- "path"
pnl <- read.csv(file, dec = ",") #, skip = 1, header = TRUE)
headers <- read.csv(file, skip = 1, header = F, nrows = 1, as.is = T)
df <- read.csv(file, skip = 2, header = F, as.is = T)
#or this
#df <- read.csv(file, skip = 2, header = F, nrow = 1,dec = ".",sep=",", quote = "\"")
colnames(df) <- headers
導入標題時,我有多個包含標題條目的列。 但是,在導入表格時,所有條目都放在一列中,與 csv 文件中的相同(應該是多列)。 如何使用 read.csv() 函數解決它?
像這樣?
data.table::fread(',,,,,,,,
,,,,a,b,c,d,e
,,,"01.01.2022, 00:00 - 01:00",82.7,57.98,0.0,0.0,0.0
,,,"01.01.2022, 01:00 - 02:00",87.6,50.05,15.0,25.570000000000004,383.55000000000007
,,,"01.01.2022, 02:00 - 03:00",87.6,41.33,0.0,0.0,0.0',
skip = 1)
V1 V2 V3 V4 a b c d e
1: NA NA NA 01.01.2022, 00:00 - 01:00 82.7 57.98 0 0.00 0.00
2: NA NA NA 01.01.2022, 01:00 - 02:00 87.6 50.05 15 25.57 383.55
3: NA NA NA 01.01.2022, 02:00 - 03:00 87.6 41.33 0 0.00 0.00
不使用任何庫:
colClasses <- c("NULL", "NULL", "NULL", "character", "numeric", "numeric", "numeric", "numeric")
read.csv(file, header = TRUE, skip = 1, colClasses = colClasses)
# X.3 a b c d
# 1 01.01.2022, 00:00 - 01:00 82.7 57.98 0 0.00
# 2 01.01.2022, 01:00 - 02:00 87.6 50.05 15 25.57
# 3 01.01.2022, 02:00 - 03:00 87.6 41.33 0 0.00
您將要重命名第一列。
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