The Distance Between utility uses the distance between two locator points in the scene to control an attribute of the shading material or texture that it’s connected to. For example, you can control the frequency of a noise texture with the Distance Between utility as shown:
To see the locator nodes in the Hypershade, right-click the work area and select Show > Objects > Clear Below from the marking menu to clear the display filters.
Find this utility in the Create tab (see Create tab).
To use this utility, see Use the Distance Between utility.
The X, Y, Z axis coordinates for the locator to be used as the first point of the distance between utility.
The X, Y, Z axis coordinates for the locator to be used as the second point of the distance between utility.