fread() 将所有列类分配给指定的字符

Question

我在下面附上了我的数据集。我尝试使用 fread 在 r 中阅读它。但是类列都是 character 即使我指定了它们。

class <- c("character", "character", "numeric", "numeric","numeric", 
"character", "numeric", "numeric", rep("chracter", 5), "numeric",                                    
"chracter", "character", "factor", "character",    
"character", "character", "character", "character", "factor",                                          
"numeric", "numeric", "character",rep("numeric", 6), "character",                                      
"numeric", "factor", rep("numeric", 9) , "character", "numeric",                                       
"character", "character", "numeric", "numeric", "numeric", "factor",                                   
"factor", "numeric", "numeric", "factor", rep("numeric", 55))

data_q1 <- fread("LoanStats_2016Q1.csv", header = TRUE, skip = 1, nrows = 133887,  colClasses = class, fill = TRUE)

str(data_q1)

Classes ‘data.table’ and 'data.frame':  133887 obs. of  111 variables:
 $ id                            : chr  "75577129" "75669195" "75769072" "75991583" ...
 $ member_id                     : chr  "81011841" "81136933" "81236807" "81482303" ...
 $ loan_amnt                     : chr  "25000" "4000" "3600" "8000" ...
 $ funded_amnt                   : chr  "25000" "4000" "3600" "8000" ...
 $ funded_amnt_inv               : chr  "25000" "4000" "3600" "8000" ...

我检查了这个 answer 我试过了：

any(is.na(data_q1[, loan_amnt]))
[1] FALSE

我的 loan_amnt 列不包含 NA 值。现在不知道是什么问题

data

Answer 1

您在 class 矢量中有拼写错误。 rep("chracter", 5) 应该是 rep("character", 5) 并且这个错误在同一个 vector

中再次出现

fread() 将所有列 类 分配给指定的字符

fread() assigns all columns classes to character even specified

r

fread

data.table

fread() 将所有列类分配给指定的字符