Hi again !

Please send a testcase, that would be very helpful. Also, please be explicit on the version of gretl you're running.

Ok Jack, I send it as soon as possible (sure tomorrow). Finally, I installe 1.7.1 today, rebooted and started again.

The problem persist but I could bypass it using genr instead of matrix functions. Here is some sample code :

============== in my script file ========
###calcul à partir de séries
genr elr_log=1+(1/yhat_s01)*$coeff[4]
genr elr_car=1+(1/yhat_s02)*$coeff[11]
matrix melrlog=meanc(elr_log)
matrix melrcar=meanc(elr_car)
matrix merl=melrlog~melrcar
merl
===============================

it works ok, and here is the return code:

===========================
###calcul à partir de séries
? genr elr_log=1+(1/yhat_s01)*$coeff[4]
Matrice elr_log remplacée
? genr elr_car=1+(1/yhat_s02)*$coeff[11]
Matrice elr_car remplacée
? matrix melrlog=meanc(elr_log)
Matrice melrlog générée
? matrix melrcar=meanc(elr_car)
Matrice melrcar générée
? matrix merl=melrlog~melrcar
Matrice merl générée
? merl
merl (1 x 2)

0.16027 0.14265
=============================

So using genr and the $coeff from system estimation with fitted saved as yhat_s01 and yhat_s02, I can compute my elasticities and show them in a row vector (merl)

however, there is still something a bit puzzling: using genr I expected two series of elasticites (elr_log ; elr_car) but gretl returns two matrices.

Well its ok, I just need the results to compute standard errors of mean elasticities via the delta method (the objective of the whole thing !).

So, I will submit a sample of the data and the full script as soon as possible so that all this can be investigated.

PS: I have good hope to provide around march / april some functions and scripts to compute spatial tests in gretl.

Excellent. I assume you've noticed that we now have the function "mread" to read matrices from text files, haven't you?

Woosh ! that is really great news ! And I must admit i did not notice because I am fully mobilized on the system estimation and elasticities computations. I saw that my doc is out of date...
I think that this will greatly ease the development of these scripts ! thanx a lot to mention it !

cheers

sincerely

Franck

Riccardo (Jack) Lucchetti
Dipartimento di Economia
Università Politecnica delle Marche

r.lucchetti@univpm.it
http://www.econ.univpm.it/lucchetti
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