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st: RE: Dates - converting time periods to inividual records
How's this...?
. list
+-------------------------------+
| start end value |
|-------------------------------|
1. | 01jan2006 03jan2006 4 |
2. | 05jan2006 11jan2006 9 |
+-------------------------------+
. gen id=_n
. gen dur=end-start+1
. expand dur
(8 observations created)
. bysort id: gen date=start+_n-1
. format date %d
. list
+------------------------------------------------------+
| start end value id dur date |
|------------------------------------------------------|
1. | 01jan2006 03jan2006 4 1 3 01jan2006 |
2. | 01jan2006 03jan2006 4 1 3 02jan2006 |
3. | 01jan2006 03jan2006 4 1 3 03jan2006 |
4. | 05jan2006 11jan2006 9 2 7 05jan2006 |
5. | 05jan2006 11jan2006 9 2 7 06jan2006 |
|------------------------------------------------------|
6. | 05jan2006 11jan2006 9 2 7 07jan2006 |
7. | 05jan2006 11jan2006 9 2 7 08jan2006 |
8. | 05jan2006 11jan2006 9 2 7 09jan2006 |
9. | 05jan2006 11jan2006 9 2 7 10jan2006 |
10. | 05jan2006 11jan2006 9 2 7 11jan2006 |
+------------------------------------------------------+
-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Jonathan Cox
Sent: 07 February 2006 14:44
To: [email protected]
Subject: st: Dates - converting time periods to inividual records
Greetings,
I'd be grateful for any assistance with the following query regarding
dates in Stata:
Currently I have a dataset with 3 columns: start date of observation;
end date (typically a few days later) of observation; value. What I
would like to do is turn this into a dataset for individual days - and
assign the value for the time period to each date individually. I guess
this is a sort of inverse of the collapse function.
Has anybody come across anything like this before?
Many thanks
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* For searches and help try:
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* http://www.ats.ucla.edu/stat/stata/
