Scaling

To scale the shown data inside its view, use any of the following options:

You can also automatically fit or fill shown data inside its view by clicking on 'Fit' or 'Fill' button (see picture above).

Shifting

To shift the shown data inside its view, use any of the following options:

Discard view scale and shift

To discard both scale and shift click on the icon on the bottom program panel.

To discard only shift press CTRL + SHIFT + 0.

To discard only scale press CTRL + 0.

All these actions you can do by using program menu 'View > Canvas Scale > ...', 'View > Reset canvas shift'.