Adobe After Effects - Manual (Page 148)

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Note:
To move selected layers so that their anchor points are at the center in the current view, choose Layer > Transform > Center In View or press
Ctrl+Home (Windows) or Command+Home (Mac OS).
To move a layer so that its anchor point is at the center of the composition, right-click (Windows) or Control-click (Mac OS) the Position
property, choose Edit Value, choose % Of Composition in the Units menu, and enter 50 for each of the components of the Position property.
To avoid softening of an image that is not moving, make sure that a layer’s Position values are non-fractional values. This avoids resampling that
is used when a layer with image quality set to Best is placed on subpixels.
Move layers by dragging in the Composition panel
To snap the edges of a layer to grids or guides as you drag, choose View > Snap To Grid or View > Snap To Guides.
Select one or more layers, and then drag a selected layer using the Selection tool .
When you move a layer by dragging it in the Composition panel, the Info panel shows the change in the Position property as you drag.
Move layers by directly modifying the Position property
1. Select one or more layers.
2. Press P to show the Position property in the Timeline panel.
3. Modify the Position property in the Timeline panel.
Move layers with arrow keys
1. Select one or more layers.
2. To move selected layers one pixel left, right, up, or down, press an arrow key. To move 10 pixels, hold Shift as you press the arrow key.
The arrow keys move the layer one pixel at the current magnification. To move a layer more precisely with the arrow keys, zoom in the
Composition panel. (See Zoom an image for preview.)
Separate dimensions of Position to animate components individually
By default, each Position property has two or three components, with each holding the value for one of the spatial dimensions (axes). You can
separate the components of a Position property into individual properties—X Position, Y Position, and (for 3D layers) Z Position. Separating
dimensions allows you to modify or animate the position of a layer along the x axis, y axis, and z axis independently.
For a video tutorial about using the Separate Dimensions command, go to the Adobe website .
To decompose selected Position properties into individual X Position, Y Position, and (for 3D layers) Z Position properties, do one of the following:
Choose Animation > Separate Dimensions.
Right-click (Windows) or Control-click (Mac OS) a Position property and choose Separate Dimensions from the context menu.
Click the Separate Dimensions button at the bottom of the Graph Editor.
To recompose a set of individual Position properties into a single Position property with multiple components, use the same commands that you
use to separate dimensions.
When you recompose separate Position properties into a single Position property, some information about the motion path and speed is
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