Parameters | Expression Parameters | x-Coordinate Variable

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