Jmagick error : magick.MagickException: No image to scale

[karim_sousse]

Hello,

Normally this topic should be posted on the Image Magick program Interface section, but unfortunately I didn't found JAVA programming interface section, so I posted my problem here to share it with developers.
I have installed Image magick 6.4.0 and JMagick 6.4.0 Q16 on my Ubuntu 11.10
I tried the following piece of code on Eclipse to test jmagick integration :

try{
ImageInfo info = new ImageInfo("myPic.jpg");
MagickImage image = new MagickImage();
MagickImage bigger = image.scaleImage(1200, 900);

bigger.setFileName("bigger.jpg");
bigger.writeImage(info);
} catch (MagickException e){
e.printStackTrace();
}

When running a simple main class, I get the following exception :

magick.MagickException: No image to scale
at magick.MagickImage.scaleImage(Native Mehtod)
at comcom.myCompany.image.ImageTest.main(ImageTest.java:20)

Does any one faced/solved the same problem

Thanks in davance for your help

Karim.