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Hi, I would like to estimate something like y = a + b*d2*y + c*d3*y where the dummies are created from some vector d with three (actually many more) levels using factor(). But either there is included the variable y or d1*y. How could I get rid of these? Example: x = c(1,2,3,4,5,6,7,8) y = c(3,6,2,8,7,6,2,4) d = c(1,1,1,2,3,2,3,3) fd = factor(d) lm(x ~ fd*y) gives: Coefficients: (Intercept)

Hi, Pine user should read the following advisory. I have not checked it because I don't use Pine. Werner -- Omnis enim res, quae dando non deficit, dum habetur et non datur, nondum habetur, quomodo habenda est. -- Augustinus -------------- next part -------------- An embedded message was scrubbed... From: "V. Alex Brennen" <vab@CRYPTNET.NET> Subject: [CryptNET Advisory]...