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Re: st: using egen for categorical variable indicating groups


From   Rufus Peabody <rufus.peabody@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: using egen for categorical variable indicating groups
Date   Sun, 8 Jun 2008 02:35:00 -0400

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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