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RE: st: FW: [...] Stored Data after the calculation


From   "Martin Weiss" <martin.weiss1@gmx.de>
To   <statalist@hsphsun2.harvard.edu>
Subject   RE: st: FW: [...] Stored Data after the calculation
Date   Mon, 29 Mar 2010 22:35:14 +0200

<>

See http://www.stata.com/support/faqs/res/statalist.html#who for the people
behind Statalist. Among other things, it says: "Statalist is not moderated."


Nobody is bullying you, really. Nick just pointed out ways for you to help
yourself before turning to others, which makes good economic sense. Note
that other sentence in the FAQs: "Assume goodwill even if it is not
evident". I hope you will continue to ask any questions on the list that you
cannot answer yourself.


HTH
Martin


-----Original Message-----
From: owner-statalist@hsphsun2.harvard.edu
[mailto:owner-statalist@hsphsun2.harvard.edu] On Behalf Of keeler james
Sent: Montag, 29. März 2010 22:21
To: statalist@hsphsun2.harvard.edu
Subject: RE: st: FW: [...] Stored Data after the calculation

In a way, I think, being a new Stata programmer and only started programming
for 3 months, I am being bullied by Nick Cox (BTW, is he the moderator?).

I think if I know the answer and/or if I have time to go through all the
previous discussions in details back from 2002, I do not need to come here
and ask for help. I hope he understands why people are joining Statalist in
the 1st place. Is that the reason why this site was being set up for in the
1st place?

Cal 

----------------------------------------
> Subject: RE: st: FW: [...] Stored Data after the calculation
> Date: Mon, 29 Mar 2010 12:53:16 +0100
> From: n.j.cox@durham.ac.uk
> To: statalist@hsphsun2.harvard.edu
>
> This was well answered by Martin Weiss, but keeler james or Calchas could
have answered part of his or her question by studying the help for -display-
>
> "and", as Martin pointed out, was guessed but illegal syntax.
>
> In addition, -display- does not support -if-. If a command supports -if-
it is always explicit in the help.
>
> By the way, I think only the moderator has the right to claim urgency on
this list.
>
> Nick
> n.j.cox@durham.ac.uk
>
> keeler james
>
> BTW, one more question.
>
> What if the groups are ever changing, e.g. sometimes groups 1 and 4 are
missing, and it will end up like the following:
>
> Cohort Tot08 Tot09 A08 A09
>
> Group 2 10   3     0
> ?
> Group 3 3    4     2    ?
> Group 5 3
> 8     0    ?
> Group 6 0    31    0    ?
> Group 7 266  245   181  ?
>
> if we use the same display command -di in r "Second value of A09: "
A09[2]-, it will show the value of Group 3 instead of Group 2.
>
> I try in vain to use the following command
>
> di in r if Cohort=="Group 2" and A09!=.
>
> to lock the output to Group 2 but there was an error message. Any help
will be great!
>
> Cal
>
>> From: keelercalchas@hotmail.com
>>
>> Brilliant! Many thanks, Martin - have a good weekend!
>>
>>
>>> From: martin.weiss1@gmx.de
>
>>> Try this, and switch your mail program to text only... All of this is
>>> discussed in [U], sect. 13.7...
>>>
>>> *******
>>> clear*
>>>
>>> input str7 Cohort int(Tot08 Tot09 A08)
>>> "Group 1" 48 66 17
>>> "Group 2" 10 3 0
>>> "Group 3" 3 4 2
>>> "Group 4" 1 0 0
>>> "Group 5" 3 8 0
>>> "Group 6" 0 31 0
>>> "Group 7" 266 245 181
>>> end
>>>
>>> gen A09=round((A08/Tot08)*Tot09)
>>>
>>> list, noo
>>>
>>> di in r "First value of A09: " A09[1]
>>> di in r "Second value of A09: " A09[2]
>>> di in r "Double the first value of A09: " 2*A09[1]
>>>
>>> *store second value in a -local-
>>> local second=A09[2]
>>> di in r `second'
>>> *******
>>>
>>> From: keeler james [mailto:keelercalchas@hotmail.com]
>>
>>> Thanks for the prompt response.
>>>
>>> The message attached is my original request, which got bounced back:
>>>
>>> For Group1, the calculated value for A09 is 23.4; for Group2, the
calculated
>>> value is 0 and so on for the rest of the groups. But how can I reuse
23.4
>>> (Group 1, A09) in one specific (further) calculation and 0 (Group2, A09)
in
>>> a separate (further) calculation?
>>>
>>> I think it should be quite easy, but I just don't know how to do that.
>>>
>>> Calchas
>>> ________________________________________
>>> From: keelercalchas@hotmail.com
>
>>> I have the following table with column "A09" needed to be calculated.
>>>
>>> Cohort Tot08 Tot09 A08 A09
>>>
>>> Group 1 48 66 17 ?
>>> Group 2 10 3 0 ?
>>> Group 3 3 4 2 ?
>>> Group 4 1 0 0 ?
>>> Group 5 3 8 0 ?
>>> Group 6 0 31 0 ?
>>> Group 7 266 245 181 ?
>>>
>>> I use the command:
>>>
>>> gen A09=round((A08/Tot08)*Tot09)
>>>
>>> This will work well for the missing column "A09", but how can I reuse
the
>>> calculated numbers to do further calculations?
>>>
>>> I know it is something relating to the command of stored data, i.e.:
>>>
>>> local missing=r(N)
>>>
>>> but this is only for a scalar value, what about saving and reusing the
>>> entire column? Really stuck at the moment and any help will be
appreciated.
>
> *
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