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I am writing a program to analize panel dataset. I was planning to read the data in as an unstructured dataset and then create a dated balanced panel. My cross section identiyer is "id" and my time identifier is "per." I can do this with proc menue but I would like to write code to set the cross section and time identifiers.

Here is what I have so far:

wfcreate(wf=work, page=panel) u 175
import data.xlsx


Thanks.