Download.file fails in RStudio

Question

file<-tempfile(fileext=\".csv\")
download.file(url=\"ftp://pubftp.spp.org/Markets/DA/LMP_By_SETTLEMENT_LOC/2014/03/28/DA-LMP-SL-201403280100.csv\",destfile=file,m         


        

Answer 1

I have the same problem when I download a file in RStudio when using

> source("http://www.statmethods.net/RiA/wmc.txt")
Error in file(filename, "r", encoding = encoding) : 
  cannot open the connection
In addition: Warning message:
In file(filename, "r", encoding = encoding) :
  InternetOpenUrl failed: '安全频道支持出错'

Then I try

> options(download.file.method="libcurl", url.method="libcurl")
> source("http://www.statmethods.net/RiA/wmc.txt")
> wmc

It worked