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2067,8
2010 Apr 06
0
Formula 1.0-0: Model formulas with multiple parts and responses
Dear useRs,
version 1.0-0 of the "Formula" package has just been released on CRAN
http://CRAN.R-project.org/package=Formula
accompanied by an article in the Journal of Statistical Software
http://www.jstatsoft.org/v34/i01/
It provides simple infrastructre for processing formulas like
y ~ x1 + x2 | z1 + z2
where there are two groups of explanatory variables, e.g.,