Hi Praveen,
In addition to the Snow's suggestions, if you simply want to convert all values in a column to their Z values,
you can use the rnormalize x-function (which corresponds to "Analysis: Math: Normalize Columns" menu) e.g.,rnormalize irng:=Col(A) method:=snd orng:=<new>;
Hope this also helps.
--Hideo Fujii
OriginLab