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Re: st: "stacking" a variable ?


From   Nick Bornschein <[email protected]>
To   "[email protected]" <[email protected]>
Subject   Re: st: "stacking" a variable ?
Date   Mon, 2 Dec 2013 20:12:06 +0100

Ok, thank you all. I will give that a try tomorrow.
My real data "change" the column every 181 values, so q1 is in 1/181, q2 from 182/363 and so on..hop that will work... ;))



> Am 02.12.2013 um 18:08 schrieb Nick Cox <[email protected]>:
> 
> <>
> 
> 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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