Hello,
I have almost 40 variables that I am trying to include in a formula.
I tried to include them using as.formula(), however the variables do not
follow a patter in the name. e.g. These variables are named like: lvacb23
lvacb30 lvacb300 lvacb40 ..... lvacb81.
> lvadd <- paste0("lvacb", 23:81)
> (fmla <- as.formula(paste("lwage ~ ", paste(lvadd, collapse = "+"))))
> fit <- lm(fmla, data = wageszm14)
Error in eval(predvars, data, env) : object 'lvacb24' not found
The variable lvacb24 doesn't exist, because from lvacb23 it jumps to
lvacb30.
Thanks in advance for any help.
--
Rolando Valdez
Facultad de EconomÃa y Relaciones Internacionales
Universidad Autónoma de Baja California
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