DrCJones <matthias.goddard <at> gmail.com> writes: > for a simple scatterplot: > > plot(X ~ Y, type = 'p', col = 'red') > > this produces red-edged circles, but I want to fill in the circles. plot(X ~ Y, type = 'p', col = 'red', pch=16) Are you sure you want X~Y and not Y~X?