Access and download images from urls (which are values of a variable)

Hi everyone, I'm creating a new topic since I couldn't find answers to my question in past publications.

The problem:

One of the variables of my data frame contains urls (one per observation). Each of these url goes directly to an image. I would like to create a loop that allows me to access each of these urls and save the images in a specific folder.

I hope someone can give me some advice to realize that task.

Best,

Hey there,

Welcome to the community! It is always much easier to help when you have some code or a minimally reproducible example of your code. I am going to write some dummy code that should get you there.

library(jpeg) #to read and write the images
library(here) #to save the files to the right location - this only works if you're working with a R project

#Code to read one file and save it will look something like this:
myurl <- "http://upload.wikimedia.org/wikipedia/commons/9/95/Apollonian_spheres.jpg"
#Creating temporary place ot save
z <- tempfile()
#Downloding the file
download.file(myurl,z,mode="wb")
#Reading the file from the temp object
pic <- readJPEG(z)
#Saving to your location
writeJPEG(pic,"image.jpg") 
# cleanup
file.remove(z) 

Looped example:

#Looped code 

for (i in 1:100) { #change 100 with your number of rows to read through
  myurl <- paste(df[i,1], sep = "") #you need the exact column number so change 1 to that value and change df to your dataframe's name
  z <- tempfile() #same as above
  download.file(myurl,z,mode="wb")
  pic <- readJPEG(z)
  writeJPEG(pic, paste("image", "i", ".jpg", sep = "") 
#alternatively you can do writeJPEG(pic, here("desired folder", paste("image", "i", ".jpg", sep = ""))
#you can do setwd to the folder you want to write the files but here is much better
  file.remove(z)
}

Let me know if this helps :slight_smile:

1 Like

Thanks! This helps a lot

1 Like

Do let me know if this was the solution to your problem :slight_smile:

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