Contour Plots and Points
Why can I not have a single point on a contour plot?
var('x,y') f(x,y)=sin(x)*cos(y) G = contour_plot(f(x,y),(x,-3,3),(y,-3,3),contours=20,plot_points=100) G += point((1,1), size=100) G.show()
does not display the point. I can add a line (for example)
G += line(((1.5,1),(1.5,0)))
and that line shows up but not the point.