Question

# 2.3 MB file
download.file("http://www.nzta.govt.nz/resources/crash-analysis-system-data/docs/crash-data-2014.csv"
              , "temp.csv")

# Blank lines cause fread to fail
data.table::fread("temp.csv")

# Empty data.table (0 rows) of 29 cols: TLA NAME,CRASH ROAD,CRASH DIST,CRASH DIRN,INTSN,SIDE ROAD...

在Notepad ++中打开文件表明在每个CRLF字符对后插入了一个额外的CR字符。如果我通过浏览器（Chrome）下载文件，则不会发生这种情况。

发生了什么事？

不幸的是，我在Windows XP上。

sessionInfo()
R version 3.1.1 (2014-07-10)
Platform: i386-w64-mingw32/i386 (32-bit)

locale:
[1] LC_COLLATE=English_New Zealand.1252  LC_CTYPE=English_New Zealand.1252    LC_MONETARY=English_New Zealand.1252
[4] LC_NUMERIC=C                         LC_TIME=English_New Zealand.1252    

attached base packages:
[1] stats     graphics  grDevices utils     datasets  methods   base     

loaded via a namespace (and not attached):
[1] data.table_1.9.2 plyr_1.8.1       Rcpp_0.11.3      reshape2_1.4     stringr_0.6.2    tools_3.1.1

Answer 1

download.file(url, destfile, mode = "wb")

download.file在每个CRLF之后插入一个额外的CR

1 个答案: