Plotting Earth globe and ECEF co-ordinates

Hi! I want to plot the WGS84 Ellipsoid and a few more co-ordinates (I have them in ECEF format). I am able to do the former by following instructions from this page (https://www.mathworks.com/matlabcentral/answers/369490-how-can-i-plot-earth-wgs84-ellipsoid) but I can't seem to plot the other co-ordinates. My globe will disappear when I try to add those points on the figure. Note that some of the points may not fall on the Earth.

Also, how can I make sure that the figure will be centered on one of the co-ordinates?

Thank you!

[Dave]

Are you using "hold on" after the first plot? As in:

plot(a, b)
hold on % or hold all
plot(c, d)