search for: desiredformula

...he columns. Up to now we have been doing this by giving the data frame a `formula' attribute, that can be passed to plot.formula. For example dat <- data.frame(x=1:100,y=runif(100),z=100:1) attr(dat, "plotme") <- (z ~ x) ...... ...... if(missing(desiredformula)) desiredformula <- attr(dat, "plotme") plot(desiredformula, data=dat) We just got bitten by the fact that a formula object has a `.Environment' attribute, which may be huge, depending on the environment in which the formula was created. In the example above there is no upp...