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st: scatter line and reshape question

From   Arina Viseth <arina@UDel.Edu>
Subject   st: scatter line and reshape question
Date   Sun, 18 Oct 2009 21:00:00 -0400 (EDT)

Dear Statalist,

I have two questions I am hoping you could help me with. 

1) I would like to draw scatter lines (Y: value, X: time), for difference countries. I have inputed the country_name (string) and also the country_code (float). 

However, my scatter line by country works only when I type:
twoway line value time, by(country_id)

but although in the help section, it says that the by option may be use with numeric or string variables, I can't draw any scatter lines when I type:
twoway line value time, by(country_name)

And instead I have the following error message: "option Dem. not allowed

Could you please help me with what I am doing wrong here?

2) my second question is: I would like to use the reshape long command, but instead of years, I would have quarterly data(for example q1_2005 q2_2005..etc). So I am not sure what to put after the "j" in reshape long command: long value, i(id) j(?)

Thank you very much in advance for your help. It is very much appreciated. 


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