Octane Toon Ramp Node
The ToonRamp mode creates a gradient for use with the Toon Material (discussed here). The node connects to both the Diffuse Ramp and Specular Ramp input pins of the ToonMaterial.

There are two options for control of the gradient:
Keys - Stes the number of gradient keys for the material
Interpolation — The method in which the gradient swatches are blended together. There are three choices:
Constant — This method will not blend in between gradient color swatches. Instead, the result is a series of color bands.
Linear — This method will use a straightforward linear blend.
Cubic — The method will apply a smoother transition between color swatches than the Linear method.
Gradient — The Gradient is edited in this section. You can have up to twelve (12) keys for the gradient in each material currently. The rendered color of the Gradient is affected by the Diffuse color of the Toon Material. To match the Gradient accurately, set the Diffuse color to white.
Usage
Example usage of the Toon Ramp Node is shown below:
