Parameters | Expression Parameters | z-Coordinate Variables

z -Coordinate Variables
Use this field to specify the variable whose values specify the z -axis coordinates for all of the spots on the microarray .
To Specify the Z -Coordinate Variables:
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All of the variables in the data set are displayed in the Available Variables field.
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Highlight the variables listing the z -axis coordinates of the spots on the array.
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Click to add the highlighted variables to the Z-Coordinate Variables field, as shown below: