Time Series Surface Plot
Time Series Surface Plots are used to identify trends and outliers within Time Series surfaces, typically forward curves across time.
The Surface is made up of a series of points where each point has:
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Time Position
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Y Position
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Color (which represents the Z axis)
The color scale can be continuous or stepped to show a surface gradient.
The below figures show an Oil Futures forward curve, with prices relative to the front month.
Figure 1. A time series surface plot with continuous colors
Figure 2. A time series surface plot with stepped colors