Dear Gretl Experts,

                                 I worked with a sample consisting of 6 regions (1,2,……,6)   with 2 areas (1 &2) and thus, a total of 12 sub-samples. But only 11 subsamples are available for estimation. I used the following loop for the estimation.  For all the 12 sub-samples (if available) the following loop works well. When  one sub- sample is unavailable, I used the following code and  got the message “No observations would be left!”.

 

Code:

discrete  Region

discrete  Area

loop i=1..6   # Six Regions

loop j=1..2   # Two areas

smpl (Region==i)&&(Area==j) --restrict --replace

Message:

No observations would be left!

smpl (Region==i)&&(Area==j) --restrict --replace

 loop j=1..2

 

In addition to the above,  I want to create a combined loop in order to compute the Region-wise combined area (1+2)  and for a full sample( six more sub-samples plus  1 more  full sample in the same loop  and thus a total of 19 subsamples).

I would be thankful to you, if you could give a solution to the above issue and to compute the Region-wise combined areas (1+2) and for a full sample in addition to the loop possibly.

 

Thanking You,

Dr.K.Dhanasekaran