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Chapter 13. Keyframe Interpolation > Viewing a Value, Speed, or Velocity Graph

Viewing a Value, Speed, or Velocity Graph

In order to control the temporal interpolation manually, you must reveal a graph of the layer property. Expanding most properties in the layer outline reveals a value graph and velocity graph. Spatial properties—position, effect point, and anchor point—expand to reveal a speed graph.

Value Graph

A value graph measures a (nonspatial) property's value vertically, and measures its time horizontally (Figure 13.48). The actual values depend on the type of property: rotation is measured in rotations and degrees, opacity in percentages, and so on. The slope of the line between keyframes represents the rate of change, in units/ second. Straight lines indicate a constant rate, and curved lines indicate a changing rate, or acceleration.


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