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I have a serie of stock index from 1/1/2000 to 1/1/2015, week day 5
I want to sampling the 1st five trading days of year, how can i do ?
Thank you very much.

Is your workfile regular or irregular?

(you can tell by looking at the range statement at the top of your workfile. If it just has dates, it is regular. If it has dates followed by the word "irregular", it is irregular :D