EViews.com

Posted: **Mon Feb 16, 2009 9:03 am**

Hallo,

I want to use the @dtoo command in a pool. Is this possible? (I only get error messages :( )

Context: I want to calculate the growth rate log(Y_2008) - log(Y_1950) in a pool (gdp series for different countries in the sample 1950 - 2008). In order to do the calculations I tried to get the value of the series in 2008 with the @dtoo command. However, this seems to be not possible in a pool... Does someone knows another way to solve this?

My code:
pool all _ALB _DZA _AGO _ARG

all.genr grow? = log(y_?(@dtoo("2008"))) - log(y_?(@dtoo("1950")))

Thanks!

Posted: **Mon Feb 16, 2009 9:13 am**

You can't use @dtoo to directly index a series like that (whether in a pool or not).

Try this:

Code: Select all


pool all _ALB _DZA _AGO _ARG	
!o1 = @dtoo("2008")
!o2 = @dtoo("1950")
all.genr grow? = log(y_?(!o1)) - log(y_?(!o2))

Posted: **Mon Feb 16, 2009 9:26 am**

Thanks for the help.

Unfortunately, this does not solve my problem, as EViews calculates for example grow_usa = log(y_usa(59)) - log(y_usa(1)) and this is always "NA". (I suppose, that it always takes the 59 lead which does not exist)

I think I will try to solve my calculations without the pool and make a big loop (for %a _ALB _DZA _AGO _ARG) ...

However, I really appreciate the quike responses in this forum!!

Posted: **Mon Feb 16, 2009 9:45 am**

My mistake. You're probably best off just using a for loop.

Code: Select all


!o1 = @dtoo("2008")
!o2 = @dtoo("1950")
for %j _ALB _DZA _AGO _ARG   
     %name = "y" + %j
     !num = log({%name}(!01)) - log({%name}(!02))
     %name2 = "grow" + %j
     series {%name2} = !num
next

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