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Index › Programming Questions & Help › Syntax Questions › Working with files, loading folders of images
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Working with files, loading folders of images (Read 768 times)
Jack Perkins
Working with files, loading folders of images
Jul 8th, 2009, 5:51pm  
Hi, I'm looking for the simplest solution for automatically loading a set of images from a directory.

I'm happy to put them into a PImage array, they don't need to be named or have any unique treatments. I've been playing with this (http://processing.org/learning/topics/directorylist.html) tutorial on looking at files and folders, but I don't know how to use loadImage() in conjunction with the file[] array that holds the names of the images.

Can anyone help?

Quote:
PImage[] pics; //i want to put all of the files in data/ in here

void setup() {

String path = sketchPath+"/data/";
File[] files = listFiles(path);

print(path+"\n");
print(files.length+"\n"); //how many files are here
println();

pics=new PImage[files.length];


for(int i=0;i<files.length;i++) {
println(files[i]);


// I really want to be able to:
pics[i]=loadImage(files[i]);
//but there is a type mismatch, as files is an array of File, and load image wants a string
//can I do a simple conversion?

}

}


//taken from http://processing.org/learning/topics/directorylist.html
File[] listFiles(String dir) {
 File file = new File(dir);
 if (file.isDirectory()) {
   File[] files = file.listFiles();
   return files;
 } else {
   // If it's not a directory
   return null;
 }
}
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PhiLho 
Re: Working with files, loading folders of images
Reply #1 - Jul 8th, 2009, 11:28pm  
pics[i]=loadImage(files[i].getName());
or
pics[i]=loadImage(files[i].getAbsolutePath()); // Works outside of data folder

or change File[] to String[] and use files = file.list(); instead (but less flexible afterward).
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Jack Perkins
Re: Working with files, loading folders of images
Reply #2 - Jul 9th, 2009, 2:38am  
Thanks, I didn't realize it was as simple as calling a method on the files array.
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PhiLho 
Re: Working with files, loading folders of images
Reply #3 - Jul 9th, 2009, 3:34am  
I forgot the "mandatory" link: File
There you can see what you can do with a File object.
And to be picky: the methods doesn't act on the file array but on each element of the array...  Cool
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Jack Perkins
Re: Working with files, loading folders of images
Reply #4 - Jul 9th, 2009, 1:30pm  
Haha, I appreciate the exactness.

Thanks for linking the reference, I dunno why I couldn't find it earlier.
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