I tried Gretl system and I impressed for the results. I compared Gretl system with SAS statistics package. I used SAS in 30 years and I want to learn how make my own gretl program. I used SAS for scientific purpose and I intended to use gretl system in scientific purpose. I did experiments in using image analysis to estimate animal weight, using the relationship between weight and body area from above. I run my data by gretl system and found the same results as in SAS system.

Best regards and keep inc touch

Nabil Brandl

nabil brandl