Thank you so so so much Kim.

Okay, now I understand. It looks like you've found a bug, the AspectRatio property isn't initialized for trackables created at runtime. We'll fix this for the next release.

In the meanwhile, you can fix it on your end by editing the following scripts:

ImageTargetBehaviour.cs - comment out the Application.isEditor check in AspectRatio.set

    public float AspectRatio
    {
        get
        {
            return mAspectRatio;
        }

        set
        {
            /*
            if (!Application.isEditor)
            {
                Debug.LogError("ImageTargetBehaviour: 'AspectRatio' must " +
                    "not be set at run-time.");
                return;
            }
            */

            mAspectRatio = value;
        }
    }

DataSet.cs - set the AspectRatio

    private ImageTargetBehaviour CreateImageTarget(int id,
                                                   string itName,
                                                   Vector2 itSize)
    {
        ...

        newITB.CorrectScale();
        newITB.AspectRatio = itSize[1] / itSize[0];

        return newITB;
    }

- Kim

My project doesnt include ".dat" and ".xml" files in Unity. Script download them at runtime on device. Than i can't test this command in Unity, so i added "if(markerDedected)" command.

So when tracking found app crushes. If I delete "if(markerDedected)" command app crushes directly.

how can i use that with downloaded markers?

Hmm, it should... I created the following script:

using UnityEngine;
using System.Collections;

public class NewBehaviourScript : MonoBehaviour
{
    void Update ()
    {
        ImageTargetBehaviour ITB=GetComponent<ImageTargetBehaviour>();
        Debug.Log(ITB.AspectRatio.ToString());
    }
}

And attached it to the ImageTargetChips object in the ImageTargets sample. The log prints 0.7 each frame. What are you seeing in the log?

- Kim

How can i use AspectRatio? it isnt giving me float result.

public bool markerDedected;

void Update () {
		
if(markerDedected){

ImageTargetBehaviour ITB=GetComponent<ImageTargetBehaviour>();

Debug.Log(ITB.AspectRatio.ToString());

Debug.Log(ITB.mAspectRatio.ToString());

		
	}
}

Once you have an ImageTarget in the scene you can scale it down using the Inspector view. Note this is a uniform scale. If you want to know the aspect ratio of the target you can use the ImageTargetBehaviour.AspectRatio property.

- Kim