RE: st: RE: problem with -collapse- [was: ]

[HAKAN USLU <hakan_uslu84@hotmail.com>]

Nick, 
I tried your command below but it did not work for my data. do you know how to convert all numeric characters into string characters in -type-?

thank you

Hakan

----------------------------------------
> Date: Mon, 19 Aug 2013 20:04:51 +0100
> Subject: Re: st: RE: problem with -collapse- [was: ]
> From: njcoxstata@gmail.com
> To: statalist@hsphsun2.harvard.edu
>
> Try this
>
> contract *
> list
> reshape wide _freq , i(year month) j(type) string
> renpfix _freq
> list
> mvencode * , mv(0)
> list
>
> That said, my wild guess is that the -reshape- may cause more problems
> than it solves. Also, watch out for characters in -type- that can't
> appear in variable names.
>
>
> Nick
> njcoxstata@gmail.com
>
>
> On 19 August 2013 19:53, HAKAN USLU <hakan_uslu84@hotmail.com> wrote:
>>> Hello all,
>>> I am having a problem with -collapse (count)-
>>> Can someone help me to convert (collapsing and counting) my data as
>>> follows? ;
>>>
>>> My data looks like this:
>>> year month type
>>> 2010 1 a
>>> 2010 1 a
>>> 2010 1 b
>>> 2011 1 b
>>> 2012 3 b
>>> 2010 1 c
>>> 2011 4 c
>>> 2011 4 c
>>> 2011 4 c
>>> 2010 2 c
>>> 2012 5 c
>>> 2012 5 c
>>>
>>
>>> I need data that looks like this:
>>>
>>> year month a b c
>>> 2010 1 2 1 1
>>> 2010 2 0 0 1
>>> 2011 1 0 1 0
>>> 2011 4 0 0 3
>>> 2012 3 0 0 0
>>> 2012 5 0 0 2
>>>
>>>
>>> Basically, I try to collapse and count my data with respect to month
>>> and year. I have 800 different numeric characters in the variable
>>> namely 'type'. I want to convert each character to a new variable. I
>>> use Stata 11.0. I already tried the following loop but I got unexpected
>>> error message like 'type mismatch' or 'no observations'.
>>>
>>> foreach c in 1/800 {
>>> preserve
>>> keep if type == `c'
>>> collapse (count) type, by (month year)
>>> ren type `c'
>>> save `c', replace
>>> restore
>>> }
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