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Summary: This process blends multiple input coverages into a single output coverage.


  • Coverage to Blend (0 or more Coverage) Any number of coverages you want to blend together.

Output: Coverage

  • Description: The blended (averaged) coverage.

Attributes: This process has no attributes.


This process blends any number of coverages together. It does this by averaging all of the values from all of the inputs, and it ignores any inputs that don't have values in a specific region. Each of the inputs must have identical coverage definitions (e.g., you cannot directly blend a dataset with three values, such as RGB, with a dataset of one value, such as elevation. Use the Colourizer to convert the elevation to RGB first.).

Note that in the pipeline editor, when you connect an input coverage to the Blender process, the process automatically generates a new empty input to accept another coverage.

It is possble to have a blender process with 0 or 1 inputs, but rather pointless.


Consider two datasets, each with an associated pipeline. One dataset is color-coded to show municipal boundaries, the second is colour-coded to show the location of pollution generating industrial sites that have been cited for violations. Blending the two sets together would create a visualization of pollution generating sites as well as the municipal boundaries.

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