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Re: st: RE: String Variable in Collapse Command.
From
Sadia Khalid <[email protected]>
To
[email protected]
Subject
Re: st: RE: String Variable in Collapse Command.
Date
Thu, 9 Jan 2014 21:05:58 -0800
Thanks
David Radwin
getting type mismatch error in this command
collapse (firstnm) string1 (mean) num2, by(num1)
On 9 January 2014 13:24, Radwin, David <[email protected]> wrote:
> -collapse- cannot calculate a statistic like mean or sd of a string
> variable. Instead, you have to use first, last, firstnm, or lastnm
> (which is fine if the string variable is constant within the group and
> problematic otherwise). Here is a simple example where string1 is
> constant within num1 :
>
> input str1 string1 num1 num2
> a 1 5
> a 1 3
> a 1 9
> b 2 0
> b 2 4
> b 2 3
> c 3 1
> c 3 9
> end
>
> list
>
> collapse (firstnm) string1 (mean) num2, by(num1)
>
> list
>
>
> David
> --
> David Radwin, Senior Research Associate
> Education and Workforce Development
> RTI International
> 2150 Shattuck Ave. Suite 800, Berkeley, CA 94704
> Phone: 510-665-8274
>
> www.rti.org/education
>
>> -----Original Message-----
>> From: [email protected] [mailto:owner-
>> [email protected]] On Behalf Of Sadia Khalid
>> Sent: Thursday, January 09, 2014 12:44 PM
>> To: [email protected]
>> Subject: st: String Variable in Collapse Command.
>>
>> Hi
>>
>> How to handle string variable in collapse command.
>>
>> when i am using the string variable in collapse command . i am getting
>> an error message.
>>
>> I have a panel data, i want to take the average of the country values
>> and than i have to draw a scatter diagram, and have to label the
>> observations with country name.
>>
>> but the string variable in the collapse command is giving an error
>> message.
>>
>> Regards
>>
>> Ssdia Khalid
>
>
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