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Re: AW: AW: st: string variable question


From   "Data Analytics Corp." <walt@dataanalyticscorp.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: AW: AW: st: string variable question
Date   Mon, 29 Mar 2010 11:04:56 -0400

This seems to get the job done. Tedious, but it works. Why can't I just create a string vector as in R?

Martin Weiss wrote:
<>
" I should be able to do something like

            gen str brand = "Cheerios" "Wheaties" "Frosted" etc"




Only one -gen- statement is necessary/allowed for "brand", such as - gen str
brand = "Cheerios"-. Subsequently you replace via - replace brand =
"Wheaties" in 2-...


HTH
Martin


-----Ursprüngliche Nachricht-----
Von: owner-statalist@hsphsun2.harvard.edu
[mailto:owner-statalist@hsphsun2.harvard.edu] Im Auftrag von Data Analytics
Corp.
Gesendet: Montag, 29. März 2010 16:24
An: statalist@hsphsun2.harvard.edu
Betreff: Re: AW: st: string variable question

Hi,

Sorry, but I'm not making myself clear.  Let me try again.  Here's the data:

A1   A2
1.35   -2.48
1.50   0.56
0.75   -1.2
...

I want to add a third variable, brand, that has nothing to do with the specific numbers for A1 and A2, but rather with the rows. So, I want

            A1   A2         brand
            1.35   -2.48   Cheerios
            1.50   0.56     Wheaties
            0.75   -1.2      Frosted
            ...

A1 and A2 come from an MDS estimation by converting the e(Y) matrix to variables. I now need to add the brands for further processing. It seems I should be able to do something like

            gen str brand = "Cheerios" "Wheaties" "Frosted" etc

But it doesn't work, unless I just mistyped something. Hope this helps clarify what I need. I really appreciate the help.

Thanks,

Walt


Martin Weiss wrote:
<>
Or, in one fell swoop:

*************
clear*
inp A1 A2
1 2
2 3
3 4
5 6
end

gen brand=string(A1)+string(A2)
list
*************



HTH
Martin


-----Ursprüngliche Nachricht-----
Von: owner-statalist@hsphsun2.harvard.edu
[mailto:owner-statalist@hsphsun2.harvard.edu] Im Auftrag von Eric Booth
Gesendet: Montag, 29. März 2010 15:38
An: statalist@hsphsun2.harvard.edu
Betreff: Re: st: string variable question

Use -tostring- to combine the numeric vars, ex:

*****
clear
inp A1 A2
1 2
2 3
3 4
5 6
end

tostring A1 A2, replace
gen brand = A1 + A2
*****

~ Eric
__
Eric A. Booth
Public Policy Research Institute
Texas A&M University
ebooth@ppri.tamu.edu
Office: +979.845.6754



On Mar 29, 2010, at 8:32 AM, Data Analytics Corp. wrote:

Hi,

I have two numeric variables in a Stata dataset: A1 and A2.  Each has 26
elements.  I want to create a third variable, brand, as part of a do
program
that has 26 brand names.  I tried
gen str brand = "A" "B" and so on to "Z"

but that didn't work.  How can I create a brand variable?

Thanks,

Walt



--
________________________

Walter R. Paczkowski, Ph.D.
Data Analytics Corp.
44 Hamilton Lane
Plainsboro, NJ 08536
________________________
(V) 609-936-8999
(F) 609-936-3733
walt@dataanalyticscorp.com
www.dataanalyticscorp.com

*
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--
________________________

Walter R. Paczkowski, Ph.D.
Data Analytics Corp.
44 Hamilton Lane
Plainsboro, NJ 08536
________________________
(V) 609-936-8999
(F) 609-936-3733
walt@dataanalyticscorp.com
www.dataanalyticscorp.com

*
*   For searches and help try:
*   http://www.stata.com/help.cgi?search
*   http://www.stata.com/support/statalist/faq
*   http://www.ats.ucla.edu/stat/stata/


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