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Re: st: drop in 1925486/1 leads to: Obs. nos. out of range, r(198)


From   "Eva Poen" <eva.poen@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: drop in 1925486/1 leads to: Obs. nos. out of range, r(198)
Date   Fri, 12 Sep 2008 19:19:55 +0100

Nick is of course correct. I assumed Silke would -use- her data,
-save- part one, -use- again, and -save- part two. Silke should follow
the advice generally voiced on this list: don't overwrite your data on
disk; and only -save- the data if you really have to. If Silke saves
all her commands in do-files, she would always be able to recreate
what she's done.

I'd like to add that what exactly is in the first 1925485 observations
in Silke's data depends on the sort order of the data. If the -sort-
command does not uniquely identify observations (like -sort foreign-
in the auto data), part of the -sort- will be random, and this might
not be what Silke wants. She can find out about the sort order of her
data by using -describe- and reading the note at the bottom.

Eva


2008/9/12 Nick Cox <n.j.cox@durham.ac.uk>:
> If you -drop- the second part of the data, you can certainly -save- the
> first part to somewhere else. But once you then -drop- the first part,
> you are left with nothing and no scope to -save- anything anywhere.
>
> What version you have is immaterial here. Nothing can only be saved as
> nothing, or not saved as anything, which is the same in practice.
>
> What you want to do may be more like
>
> preserve
> drop in 1925486/l
> save part1
> restore
> keep in 1925486/l
> save part2
>
> Nick
> n.j.cox@durham.ac.uk
>
> Silke
>
> I want to divide my data into two seperate files. So I would first like
> to use -drop in 1925486/1- to delete the last rows of the data and save
> the remaining part. Then I want to use -drop in 1/1925485- to delete the
>
> first part in order to save the rest of the data in a second file.
>
> Perhaps it does not work because it is version 8..
>
> Eva Poen
>
>> it should be  -drop in 1/1925486-, not the other way round. Or did you
>> mean -drop in 1925486/l- ? Note the "l", for last, instead of "1".
>>
>
>> 2008/9/12 - <mc_allister@gmx.de>:
>>
>>
>>> I use Stata Version 8 and do not know what I am doing wrong:
>>>
>>> The command:
>>>
>>> . drop in 1925486/1
>>>
>>> leads to the following error:
>>>
>>> Obs. nos. out of range
>>> r(198);
>>>
>>> Does anyone know what is wrong?
>
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