Whats New in Release 4
Introduction
These notes relating to ASReml 4 are intended
to users familar with ASReml 3.
Functional specification of Variance Models
The primary change is a
functional method
of associating
variance structures with model terms.
Use
!SIGMAP
to force simple jobs to use the variance scale (Sigma parameterization)
rather than the gamma scale (Gamma parameteriztion).
New methods for starting values
ASReml will generate initial values for variance parameters.
If these prove inadequate, they are written to
TSV file
which the user may edit and then have ASReml read the changed values.
The
!CONTINUE
qualifier may specify the particular .rsv file to be read.
More sophisticated coding
The
!ASSIGN
statement has been extended with a !FOR ... !DO look
and !IF statements.
!MBF
has been extended to allow binary files.
Input and output
ASReml now routinely reports the
Akaike and Bayesian Incormation Criteria.
The
!OUTFOLDER
qualifier causes the output from different runs to be placed in separate folders.
Qualifiers
!SECTION !ROWFAC !COLFAC
now generate extra data records to 'fill out the grid' for spatial analysis.
The
!DESIGN
qualifier writes the design matrix out to a .des file.
This may faciltate creating design matrices for modelling variances.
The key results from the .asr file are also written in
XML format
to facilitate parsing by database systems if the X command line option is set.
VPREDICT has been extended to allow processing of XFA and CORUV structures,
and use of names rather than just numbers to define the functions calculated,
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