Dear Statalist,

Why does my twoway graph generate vertical lines at the minimum and maximum values of my treatment variable (i.e., 0,1)? I would like to remove them.

Thanks so much,

Matt

Regression model:
Code:
 eststo: mixed math treatment math_prior covariates i.year || school: , covariance(unstructured) mle
Graph code:
Code:
predict values, fitted
sort school treatment
twoway (line values treatment), ///
graphregion(color(white)) ///
xtitle(" ""Treatment") ///
xscale(range(-.1 1.1)) ///
xlabel(0 1) ///
ytitle("Empirical Bayes Regression Lines, Math"" ")
Graph: Array