st: identifying change in cell values

[Adeel Yousaf <townplanneradeel@gmail.com>]

Hi,

I applied the  'tag' command that is detecting new values, how can i
detect change in the value of 'coded' either repeating or new.

 egen tagcoded = tag( coded)


coded	tagcoded
24	1
24	0
28	1
27	1
27	0
27	0
27	0
27	0
28	0
22	1
22	0
24	0
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