datapath...route lost

Programming Questions

davos111

in Programming Questions • 1 year ago

Hi,

part of the data path is lost (null) and the images are not loaded when I am in a subroutine.

I am trying to upload an image, it works when I enter it directly form new sketch:

b=loadImage("../dir/subdir/iconos/imagen1.jpg");

image(b,10,10);

println(dataPath(""));

displays> /Users/myuser/Documents/Processing/sketch1/data , and the image is displayed.

but when I copy/paste the same code inside a void subroutine , this happens:

The file "../dir/subdir/iconos/imagen1.jpg" is missing or inaccessible, make sure the URL is valid or that the file has been added to your sketch and is readable.

the data path then is /null/data

If I set the datapath directly,

dataPath("/Users/myuser/Documents/Processing/files1/"); it fails, also iiIf i call the image directly

mimagen=loadImage("/Users/myuser/Documents/Processing//dir/subdir/iconos/imagen1.jpg");

it didn't work,

If I print the data path it says:

/Applications/null/data

maybe is that /null that appears in data path that don't let the image to be loaded, because it exists, is the same code and route, but it don't work in subroutines level..

any idea how to correct it?

thank you

Replies(2)

Jonny Stu..

Without seeing all your code it's a bit hard to say but I think you've misunderstood what dataPath does. The dataPath function returns a string containing the full path to a folder called "data" within your sketche's folder. If you supply it with an argument then that argument is appended to the returned string. So if you have:
/Users/me/Documents/
      Processing/
            myApplet/
                  data/
                        foo.jpg

Then dataPath() returns "/Users/me/Documents/Processing/myApplet/data/"
dataPath("foo.jpg") returns "/Users/me/Documents/Processing/myApplet/data/foo.jpg"

Based on b=loadImage("../dir/subdir/iconos/imagen1.jpg"); it looks like your image isn't actually in the dataPath or the sketchPath so you'd be better off just passing the full path to loadImage and skipping dataPath entirely or, better, moving your sketches assets into a data folder inside the sketch folder.

davos111

Re: datapath...route lost

1 year ago

Hi, that code works when it is in a void, but not when it is ins a class.

so, I moved the photos to the /data directory, and also set a direct link, but it does not work...

public class Xempleados extends EmbeddedSketch{

String url;

Xempleados(PApplet p) {};

Xempleados(String nombre_, String url_, int x_, int y_, String descr_) {

url= url_;

void setup(){

url="photo1.jpg";

mimagen=loadImage(url, "jpg");

if (mimagen==null) {

println("was null");

}

println(dataPath(""));

and the result is>

null

The file "sinfoto.jpg" is missing or inaccessible, make sure the URL is valid or that the file has been added to your sketch and is readable.

was null

and data path is:

/Applications/null/data

...any idea why inside a class it does don't work?

update> I removed the extends EmbeddedSketch and it works fine...

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