When loading obj model, why are the coordinates of mesh objects {0, 0, 0}?

Questions
3

In the Collection of examples from discourse.threejs.org you will find 2018 discourse.threejs.hofk.de the example 2020-06-02 13.53.19

exampleObject.scale.set( 2.5, 2.5, 2.5);

changes the size, there you can also change the position.

In the animate function

time = clock.getElapsedTime();
		
exampleObject.rotation.x = 0.4 * Math.sin( time / 2);
exampleObject.rotation.y = Math.cos( time );
exampleObject.rotation.z = Math.sin( time / 2);

you can dynamically rotate the model, move it… etc.