如何解决如何格式化导入的 csv 文件
我正在尝试从 .csv
文件导入数据集,但我的文件记录了 ?
符号。我怎样才能避免“?”。 market data 网站。
示例数据:
structure(list(`N2EX Day Ahead Auction Prices in EUR/MWh` = c("UK time","23<ff>-<ff>00","00<ff>-<ff>01","01<ff>-<ff>02","02<ff>-<ff>03","03<ff>-<ff>04"),X2 = c("CET/CEST time","03<ff>-<ff>04","04<ff>-<ff>05"),X3 = c("06/01/2019","62,56","69,54",51","59,17","58,81"),X4 = c("05/01/2019","73,38","65,25","63,45",86","57,84"),X5 = c("04/01/2019",48",77","56,42"),X6 = c("03/01/2019","61,05",04",06","60,97",70"),X7 = c("02/01/2019","54,37",65",19","55,39","53,X8 = c("01/01/2019","66,85",99",13","51,"49,14"),X9 = c("31/12/2018",27",07",68",50"),X10 = c("30/12/2018",16","67,"72,83")),row.names = c(NA,-6L),class = c("tbl_df","tbl","data.frame"))
解决方法
我将您的示例数据读取为“数据”并替换了产生 ?
的内容,如下所示:
data$`N2EX Day Ahead Auction Prices in EUR/MWh` <- gsub("<ff>","",data$`N2EX Day Ahead Auction Prices in EUR/MWh`)
data$X2 <- gsub("<ff>",data$X2)
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