st: Merging data

[Reka Sundaram-Stukel <rsundara@wisc.edu>]

Dear statalist,

I am trying to create a panel dataset and I need to merge several 
datasets in a particular way but don't know how to. See example below.

I have 2 data sets

1999.dta contains

id 	income	year
1       $		1999
2 	$		1999
3	$		1999

2000.dta has the same info.

I want to merge these two datasets to look like

id 	year 		income
1	1999	$
1	2000	$
2	1999	$
2	2000	$
3	1999	$
3	2000	$

I would really appreciate any help on this.

Reka

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