Show specific data points in contourf plots

I am currently trying to obtain volcano / sabatier plots for my project. I have generated the contour plot as follows:

contourf(x,y,rate)
colorbar

I would like to know how would I be able to show a few specific points that were not in the original set of data used to generate the contour plot.

Thank you.

Answer 1

[Patrick Kalita]

How about scatter? You can use the fourth input argument to set the color of the point:

contourf(x, y, rate)
hold on
scatter(x_other, y_other, [], rate_other)
colorbar