I am trying to download a pdf file that is stored in an internal server.
The url for this file is like this below
file_location <- "file://dory.lisa.org/research/data/test.pdf"
I tried downloading this file using the download.file option
download.file(file_location, "test.pdf",method='curl')
and i am getting an error.
curl: (37) Couldn't open file /research/data/test.pdf
Warning message:
In download.file(file_location, "test.pdf", method = "curl") :
download had nonzero exit status
I tried
url <- ('http://cran.r-project.org/doc/manuals/R-intro.pdf')
download.file(url, 'introductionToR.pdf')
And i have no problem downloading this file, but somehow it shows an error when I try to use the same approach to download a file on my server.
I'm guessing that the file does not exist at that location on your local drive. When I executed the couple of lines that downloaded from CRAN I get a pdf file in my User directory/folder. I then get success with this code:
url <- ('file://~/introductionToR.pdf')
download.file(url, 'NewintroductionToR.pdf')
Related
I am trying to download a ncdf file using rCurl. Can anyone provide any advice on why this is not working?
require(RCurl)
require(ncdf4)
url <- "https://oceandata.sci.gsfc.nasa.gov/MODIS-Aqua/Mapped/Seasonal_Climatology/4km/sst/"
filename <-"A20021722014263.L3m_SCSU_NSST_sst_4km.nc"
download.file(paste0(url, filename),destfile = paste0("~/Desktop/", filename), method="curl")
setwd("~/Desktop/")
files<-dir(pattern="*.nc")
f<-nc_open(files[1])
Error in R_nc4_open: NetCDF: Unknown file format
Error in nc_open(files[1]) :
Error in nc_open trying to open file A20021722014263.L3m_SCSU_NSST_sst_4km.nc
It appears that the file downloaded is an error file in XML format? If you open it in Notepad, you'll see it contains stuff like
Sorry, an error has occurred. Use the back button to return to the previous page or go to the Ocean Color Home Page
Are you sure that the filename you're wanting to download actually exists in that URL?
I am trying to upload a data.frame called 'ftp_test' via ftpUpload command
library(RCurl)
ftpUpload("Localfile.html", "ftp://User:Password#FTPServer/Destination.html")
and am getting an error:
Error in file(what, "rb") : cannot open the connection
In addition: Warning message:
In file(what, "rb") :
cannot open file 'ftp_test': No such file or directory
Could anyone tell me what is the issue here? Can I actually use data.frame and upload from r global environment ?
If I can't use the data.frame is there any workaround?
Many thanks,
Artur
You problem is, that you are trying to send an R object with an file transfer protocol. Since you are saving it there, you have to tell how to save it. A workaround is to save it as a file, upload it and then delete it on your local afterwards. Also saving as R.History is fine, but you need to transfer the R object to a file in some way. This example is used with an open ftp sever (uploads get deleted immediately, but you can try if it works)
filename="test.csv"
write.csv(df, file=filename)
#use your path to the csv file here instead of ".~/test.csv", you can check with getwd()
ftpUpload("~/test.csv", paste("ftp://speedtest.tele2.net/upload/",filename, sep=""))
file.remove(filename)
Also make sure your server is running. You can try your code with the open ftp server.
I'm having trouble download a .pdf from the internet into Rstudio. I would like to analyse the .pdf using the pdftools package. I have a directory called files that I want the .pdf to go to. I'm using this code.
download.file('https://www2.gov.scot/Resource/Doc/352649/0118638.pdf', 'files')
I get this error:
Warning messages:
1: In download.file("https://www2.gov.scot/Resource/Doc/352649/0118638.pdf", :
URL https://www2.gov.scot/Resource/Doc/352649/0118638.pdf: cannot open destfile 'files', reason 'Is a directory'
2: In download.file("https://www2.gov.scot/Resource/Doc/352649/0118638.pdf", :
download had nonzero exit status
Is there way to get around this message?
The destfile has to be the filename (not the directory name) for the downloaded file.
For example, if we were to download the file above and save it as "Commission.pdf" in the files folder we would do the following:
download.file(url='https://www2.gov.scot/Resource/Doc/352649/0118638.pdf',
destfile="files/Commission.pdf")
You're passing in file to the destfile, which prompts R to throw the error warning that the argument you specified is a directory.
You miss the function assignature. It is
download.file(url, destfile, ...)
Therefore, when you're using download.file('https://www2.gov.scot/Resource/Doc/352649/0118638.pdf', 'files'), you are downloading the file https://www2.gov.scot/Resource/Doc/352649/0118638.pdf and saving it with the name files.
What you need to do is to modify the second argument to encopass the complete file path. It can be something like this:
download.file('https://www2.gov.scot/Resource/Doc/352649/0118638.pdf', 'files/0118638.pdf')
I'm trying to read this xbrl file with R XBRL package...
https://www.cnmv.es/Portal/Consultas/wuc/DescargaXBRLIPP.ashx?t={77853e69-5deb-4bd5-acd4-3fb4715e2664}
...but when I download the file and run the code
xbrl.vars <- xbrlDoAll(inst, verbose=TRUE)
I get this error:
error in XBRL::xbrlParse(file) :
./ipp-enc-ind-2005-06-30.xsd./ipp-enc-con-2005-06-30.xsd does not exists. Aborting.
I suppose that the error is a problem with the ULR of the .xsd file. Is it possible to download the xsd files in a local directory and use them to read the .XBRL file? How can it be done?
I am trying to download an excel zip file into a R Project folder that I have started. I'm new to R so I'm a little puzzled at the error message that I'm receiving.
The file is an excel file and so first I created a variable for the file:
excel2file="http://op.nsf.data/dataFiles/Housing2013EXCEL.zip"
Then I used the coding:
download.file(excel2file, destfile= "~/Home/Documents/Data")
I receive this error message:
Error in download.file(excel2file, destfile = "~/Home/Documents/Data") :
cannot open destfile '~/Home/Documents/Data', reason 'Permission denied'
I tried looking at other examples of permission denied and I think it may be my destination file but I am not sure why or the steps to trouble shoot it.
destfile should be a filename, not a directory. For example:
download.file(excel2file, destfile= "~/Home/Documents/Data/Housing2013EXCEL.zip")
Also, that URL doesn't seem to be valid, but that's a different (non-R) problem.
Make sure you don't have the file already open in the destfile, as the Permission denied error also comes from being unable to overwrite an open file.
This tripped me up for a while.
You could use the package readr and its function read_csv. It allows you to download the file, but it has to be a downloaded files such as a CSV file, something like this worked for me
library(readr)
newz <- read_csv("https://www.stats.govt.nz/assets/Uploads/Annual-enterprise-survey/Annual-enterprise-survey-2020-financial-year-provisional/Download-data/annual-enterprise-survey-2020-financial-year-provisional-csv.csv")
View(newz)
about the "Permission Denied" I still doesn`t solved that problem
You can also use basename with paste, which would be useful if downloading a bunch of files.
For example:
(excel2file="http://op.nsf.data/dataFiles/Housing2013EXCEL.zip")
(file_name <- basename(excel2file))
download.file(excel2file, destfile= paste("~/Home/Documents/Data",file_name, sep="/"))
add a name in destfile like /downloadedfile.csv"