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How does Voxler's Transform Scale change the XYZ coordinates?

The Transform module's Scale operation can operate around any point of an object and the results depend on the origin.

 

For example, consider a data set with Z values as follows:

Z Min: 90
Z Max: 100
Range: 10
Midpoint: 95

 

Apply a Z Scale of 0.1 with a central origin and the results are:

Z Min: 94.5
Z Max: 95.5
Range: 1
Midpoint: 95

 

The Z Min and Z Max are calculated by multiplying the Scale by the range, dividing by 2, and adding or subtracting from the origin.

 

Updated February 1, 2019

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