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RE: st: using egen for categorical variable indicating groups


From   "Shehzad Ali" <sia500@york.ac.uk>
To   <statalist@hsphsun2.harvard.edu>
Subject   RE: st: using egen for categorical variable indicating groups
Date   Sun, 8 Jun 2008 15:00:20 +0100

Sorted. Thank you.

Shehzad


-----Original Message-----
From: owner-statalist@hsphsun2.harvard.edu
[mailto:owner-statalist@hsphsun2.harvard.edu] On Behalf Of Rufus Peabody
Sent: 08 June 2008 07:35
To: statalist@hsphsun2.harvard.edu
Subject: Re: st: using egen for categorical variable indicating groups

To access your local macro, max, you need to refer to it as `max' .

On Jun 8, 2008, at 12:17 AM, Shehzad Ali wrote:

> Please ignore my previous question. I was using global which was not  
> previously defined because I was following commands from a manual. I  
> have rectified the previous problem but now I am getting a different  
> error. Here is what I do:
>
> qui sum y
> local max=r(max)
> kdensity y [aw=wt], n(100) nograph
> local width=r(scale)
> egen ygroup=cut(y), at(0(width)max) icodes
>
> But I get this error after the last line:
>
> at() invalid -- invalid numlist
>
> I have defined the local 'width'. I am not sure why I am still  
> getting an error. Any help would be appreciated.
>
> Thanks,
>
> Shehzad
>
> On Jun 8 2008, Shehzad Ali wrote:
>
>> Hi,
>>
>> I am trying to generate categorical variable indicating income  
>> groups. My income variable is y. Here is what I am doing:
>>
>> qui sum y
>> local max=r(max)
>> kdensity y [aw=wt], n(100) nograph
>> local width=r(scale)
>> egen ygroup=cut(y), at(0(`width')`max') icodes
>>
>> But I get this error when I run the last line:
>>
>> { required
>>
>> I am not sure where I am missing brackets. I have also tried the  
>> following but it didn't help.
>>
>> egen ygroup=cut(y), {at(0(`width')`max')} icodes
>>
>> Any help would be appreciated.
>>
>> Cheers,
>>
>> Shehzad
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