Dear list,
I have a data set which looks like myDF (see below) and I'd like to estimate
the linear model rea=a*rea+b*mod+error, where a+b=1 and a,b>0. I tried
mymodel=lm(rea~ st + mod-1, data=myDF)
summary(mymodel)
but I couldn't get what I'm looking for. Also, I tried
RSiteSearch("constrained coefficients in lm") which produces 20 hints, but
they're not what I need.
Any help would be appreciated.
Thanks in advance,
Jorge
# Data set to estimate the model
myDF=read.table(textConnection("rea st mod
14482734 14305907 14761000
14427969 14502228 14848024
14698723 14408264 14259492
15741064 14797138 14565303
15914249 16162714 14348592
16475594 15977623 15592229
17124613 16688456 14988151
17575281 17383822 15647240
17721548 17757635 15624907
18178273 17779858 15598802
18005810 18364233 16363321
18032618 17938963 16536844
17737470 18043063 17096089
17652014 17624039 17056355"),header=TRUE,sep="")
closeAllConnections()
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