Re: st: Problem in appending data files : an error happened

[Nick Cox <njcoxstata@gmail.com>]

There is, I guess, a clash between datasets in variable type. Perhaps
-m12b- is numeric elsewhere. You may need to apply -destring- before
you can combine that dataset with others.

On Tue, Nov 6, 2012 at 4:18 PM, Amir Kasaeian <amir_kasaeian@yahoo.com> wrote:

> I encountered a new error in appending my data with the below codes.
> I received the following error about one of my variables.
>
> ""m12b is str5 in using data""
>
> and I do not know how to resolve it.

From: Maarten Buis <maartenlbuis@gmail.com>

> replace province=`i'
>
> should be
>
> replace province=`i' if province == .


On Tue, Nov 6, 2012 at 3:07 PM, Maarten Buis <maartenlbuis@gmail.com> wrote:

>> use "C:\Total85\S0.dta"
>> gen province = 0
>> forvalues i= 1/29 {
>> append using "C:\Total85\S`i'.dta" ,
>> replace province=`i'
>> }
>> save "C:\Total85\Total.dta", replace

On Tue, Nov 6, 2012 at 2:46 PM, Amir Kasaeian <amir_kasaeian@yahoo.com> wrote:

>>> I have a problem in appending my data files.
>>> I wrote a loop but there is little problem that I don't know how to resolve it.
>>> Your help will be appreciated.
>>> I use stata MP 11.
>>> The problem is that I have 30 files in a folder named S0 through S1. I want to have a final file named for example "Total" including a new variable as an indicator for observations of each of 30 separate files.
>>> I wrote my file as :
>>>
>>> forvalues i= 0/29 {
>>> append using "C:\Total85\S`i'.dta" ,
>>> gen Province=`i'
>>> save "C:\Total85\Total.dta", replace
>>> }
>>>
>>>
>>> but the code stops at the first step alarming:
>>>
>>>
>>> . do "C:\Users\AK\AppData\Local\Temp\STD00000000.tmp"
>>>
>>> . forvalues i= 0/29 {
>>>   2. append using "C:\Total85\S`i'.dta" ,
>>>   3. gen Province=`i'
>>>   4. save "C:\Total85\Total.dta", replace
>>>   5. }
>>> file C:\Total85\Total.dta saved
>>> Province already defined
>>> r(110);
>>>
>>> end of do-file
>>>
>>> r(110);
>>>
>>>
>>> The Total file just includes observation from the S0.
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