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Re: st: Relative Comparision between Observations
From
Nick Cox <[email protected]>
To
[email protected]
Subject
Re: st: Relative Comparision between Observations
Date
Thu, 25 Aug 2011 14:22:19 +0100
Please show a representative chunk of your data so that precisely what
are your variables and your observations becomes clear.
Nick
On Thu, Aug 25, 2011 at 2:09 PM, <[email protected]> wrote:
> I want to perform the following task for a very large dataset (so writing a Mata loop is probably not the solution): the dataset consists of two sorts of data: spreads and transactions. Spreads do have a start and an end date, while transactions only have a transaction date. Now I want to know whether some transaction happend between the start and end date of a spread. Ideally, I would like to have variables containing all the ids of transactions that occured between the start and end data of the spread for each spread. Is there a way to use inexact matching or merging for this ?
> This should be a familiar problem, however, I do not have a clue how to solve it.
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