Extract first trading days of the month
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Hi! So I need to extract the trading data of the first day of the month but I don't know how to do it because some months start at day 4 and compare one day with the following one (when decreasing 31st to 1st) we reach a new month
what I had was
days_3 = data(((days>=1) & (days>28)),4)
I know it's not correct cause its just giving trading rates of days 29 30 31 of some months
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Stephen Jue
am 21 Jun. 2017
What you can do instead is:
days_3 = data((days-[100; days(1:end-1)])<0,4)
This checks the difference between each successive value. When the value decreases, it signifies the start of a new month.
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