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Re: st: "stacking" a variable ?
From
Nick Cox <[email protected]>
To
"[email protected]" <[email protected]>
Subject
Re: st: "stacking" a variable ?
Date
Mon, 2 Dec 2013 17:08:00 +0000
<>
I am just underlining that [_n+3] does the loop for you.
Nick
[email protected]
On 2 December 2013 16:51, Thomas, Anthony <[email protected]> wrote:
> sorry, thought you wanted to move observations from q1 to q2. The
> principle is the same though...
>
> On Mon, Dec 2, 2013 at 11:35 AM, Nick Cox <[email protected]> wrote:
>> An explicit loop is unnecessary, as
>>
>> replace q2 = q2[_n+3] in 1/3
>>
>> encapsulates the loop. Subscripting should be familiar in terms of
>> e.g. [_n-1] for previous observation.
>>
>> Nick
>> [email protected]
>>
>>
>> On 2 December 2013 16:28, Thomas, Anthony <[email protected]> wrote:
>>> Hi Nick,
>>>
>>> You can try using Stata's subscript notation "_n":
>>>
>>> replace q2 = q1[4] if _n == 1
>>> replace q2 = q1[5] if _n == 2
>>>
>>> *** where 4 and 5 are the observation number of what you want to move in q1
>>>
>>> and so on. Of course it would be smarter to implement this in a loop
>>> if possible.
>>>
>>> Hope that helps,
>>>
>>> Anthony
>>>
>>> On Mon, Dec 2, 2013 at 11:03 AM, Nick Bornschein
>>> <[email protected]> wrote:
>>>> Hello,
>>>>
>>>> after some problems with my data, I have a final question to deal with them. Imagine the following example:
>>>>
>>>> clear
>>>> input q1 q2
>>>> 2.05 .
>>>> 3.01 .
>>>> 0.75 .
>>>> . 1.99
>>>> . 1.86
>>>> . 0.44
>>>> end
>>>>
>>>> How do I "move" column q2 upwards, so that finally 1.99 is in the same line as 2.05 in the first row, 1.86 is besides 3.01 and so on.
>>>>
>>>> Thanks a lot
>>>> -Nick
>>>> *
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