Re: [Gretl-users] trouble with matrix functions

Dear all listers As I wrote yesterday, here is my script and part of my data (a sample of 500 households). The following script does system estimation by ITSUR on two variables home energy and motorfuel. then I compute elasticities for each household. Initially i intended to do it with matrix commands only. But as I encountered the problem i resorted to saving the fitted values and using genr commands. However, after these command the script computes those same elasticities but with matrix commands. So let ei = income elasticity for equation i I have eih = 1 + beta[i] / what[i,h] essentially i generate the vector of ones vecun = ones(500,1) then compute b = beta[i] * (1/what[i,h]) to finally add them : ei = vecun + b but here gretl do not want to add those two vectors. you can see it by yourself executing the script. Notes : 1) i am under 1.7.1 just installed yesterday. The problem persists 2) in system estimation, the matrix accessors are a bit different. There is an extra line & column in $vcv and $coeff but I do not remember what it is exactly althrough it seems to be related to ML ? greetings and see ya ! sincerly Franck