Dear All,
I am using ASREML-R to fit unstructured (UN) and factor analytic (FA) model to explore complex structure of genotype by environment interaction in multienvironment yield data. There are 160 genotypes across 30 environments. It is highly unbalanced data. I used two-stage approach so my data is in two-way GxE table of mean with a single observation for every genotype by environment combination.
The unstructured model is fitted as
UN
Hi Moshood,
You are doing a two-stage analyses. This means that you have to incorporate weights into your model as 1/se(pred), where your pred is the predictions from your first-stage. Then you need to use the family statement in asreml-R, as
family = asr_gaussian(dispersion=1).
I believe that is the reason you are finding problems. With the fixed error variance and with the weight statement you should be able to fit fa1 and even fa2. My only concern there will be how unbalanced is your data. In your 30 environments you need to have at least 2-4 genotypes in common for each pair, otherwise, they are efectively disconected, and hence no option to estimate a correlatoin between sites.
Good luck
Salvador
Hi Moshood,
You are doing a two-stage analyses. This means that you have to incorporate weights into your model as 1/se(pred), where your pred is the predictions from your first-stage. Then you need to use the family statement in asreml-R, as
family = asr_gaussian(dispersion=1).
I believe that is the reason you are finding problems. With the fixed error variance and with the weight statement you should be able to fit fa1 and even fa2. My only concern there will be how unbalanced is your data. In your 30 environments you need to have at least 2-4 genotypes in common for each pair, otherwise, they are efectively disconected, and hence no option to estimate a correlatoin between sites.
Good luck
Salvador
Dear all, I see that most of you are more or less familiar with the "ASREML-R". I have tried hard to install the package of ASREML-R. Although "I am a Ph.D. student at Humbold university" I couldn´t find Site reference: ?????????????? as I found that for the University of Zurich Site reference: VS10AF11 Organization: University of Zurich # Now if I run the model, I get the following error License error: No license for product (-1) # I searched the internet to solve this problem and it was mentioned that the license should be activated by the command asreml.license.activate() # Now I have the next message when I should provide the activation code that should be sent to my email Please enter your activation code (RET or 0 to exit): but to do that in the link below I need Site reference from my organization and I don´t know from where I can get this information. https://asreml.kb.vsni.co.uk/asreml-r-4-download/ I hope any of you can help me in doing that or just tell me clearly if this package is not free to be used as the other packages in R. Thanks in advance Heba
Dear all,
I see that most of you are more or less familiar with the "ASREML-R".
I have tried hard to install the package of ASREML-R.
Although I am a Ph.D. student at Humbold university I couldn´t find Site Site reference: ?????? as I found that for the University of Zurich
Site reference: VS10AF11
Organization: University of Zurich
# Now if I run the model, I get the following error
License error: No license for product (-1)
# I searched the internet to solve this problem and it was mentioned that the license should be activated by the command
asreml.license.activate()
# Now I have the next message when I should provide the activation code that should be sent to my email
Please enter your activation code (RET or 0 to exit):
but to do that in the link below I need Site reference from my organization and I don´t know from where I can get this information.
https://asreml.kb.vsni.co.uk/asreml-r-4-download/
I hope any of you can help me in doing that.
Thanks in advance
Heba
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