Download images from a URL and skip files with errors

Asked Feb 06 '18 at 19:01

Active Feb 06 '18 at 19:01

Viewed 230 times

I am attempting to download several thousand image files. I have written a loop that works as long as there are no problem files or URL errors.

For example:

URLs <- c("https://api.idigbio.org/v2/media/d201d0b9af2bfe78e3203820d10fdca9?
size=fullsize",
"https://api.idigbio.org/v2/media/a2b9b1510c60e8a41f7ae0552c7e51ba?
size=fullsize",
"http://usuherbarium.usu.edu/UTCimages/140/UTC00130056_lg.jpg",                   
"https://api.idigbio.org/v2/media/fe113f423971f51a58caf9bfc90a5171?
size=fullsize")

for(i in seq_along(URLs)){
    download.file(URLs[i],basename(URLs[i]),mode="wb")
}

In this particular example, there is a problem with the 3rd URL and my code just stops. I would like to skip the problems ones and continue to download the ones that work. How can I do that? Ideally, I would also generate a list of the ones that were skipped, but my biggest priority is to continue the process without stopping.

Thanks in advance.

asked Feb 06 '18 at 19:01

mwdenslow

Does this help? https://stackoverflow.com/questions/14748557/skipping-error-in-for-loop – MrFlick Feb 06 '18 at 19:05
Maybe `try()`. Use it as `try(download.file(URLs[i],basename(URLs[i]),mode="wb"))`. Couldn't test it as all your URLs gave me errors. – Cris Feb 06 '18 at 19:05
try() appears to be working. Thanks! – mwdenslow Feb 06 '18 at 19:18

Download images from a URL and skip files with errors

0 Answers0