[R] Adding in Missing Data

From: Jeff08 <jefferyding_at_gmail.com>
Date: Mon, 07 Jun 2010 20:36:44 -0700 (PDT)

Sample Data.Frame format

Name is Returns.names

            X id ticker date_ adjClose totret RankStk 427225 427225 00174410 AHS 2001-11-13 21.66 100 1235 "id" uniquely defines a row

What I am trying to do is add missing data for each ID.

Important Information: Date is not continuous, the data points are for trading days, so weekends/certain holidays are off

x<-unique(Returns.names$date_) gives me the list of all the possible trading days.

For days that are missing, I would like to add a row for that date & the same totret as the previous day.

I cant think of an easy way to do this

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Received on Tue 08 Jun 2010 - 04:19:04 GMT

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