Unable to change the length of my search radius axes.

[PamelaBond]

I am trying to perform an ordinary kriging interpolation using the geostatistical wizard.  I have a very large dataset (approximately 5000 points) that covers about 12,000 square meters.  I would like to change the length of the major and minor axes but they are grey'd out - like that option is unavailable.  Can anyone tell me why I don't have this option?  Any suggestions will be much appreciated.

Thanks!

[EricKrause]

If you're on the semivariogram screen, you can edit the Major Range by clicking the calculator button directly on its right.  In order for Minor Range to be exposed, you need to set Anisotropy to True.

If you're on the Search Neighborhood screen (where you can preview the prediction surface), set "Copy from Variogram" to False.  Then you should be able to alter the Major and Minor Semiaxes.