Make certain plot markers invisible?

set(0,'DefaultLineMarkerSize',6);
plot(x,y,'red.-');

I have some points touching the x-axis (y-value is 0). For these particular points, I want to make the markers invisible.

http://imageshack.us/a/img801/4608/needtofix.png

Also, I want all the points to be plotted. So plot(x,y(y>0),'red.-'); where x is modified earlier in the script to have the same vector length as y(y>0) wouldn't work.

Any help is appreciated. Thanks!

Answer 1

[Walter Roberson]

You cannot modify individual markers of a line() or lineseries() object such as are created by line() or plot().

What you can do is plot() without the markers and the scatter() the markers into place. Or you can plot() without the markers and the plot() again with

hold on; plot(x(y>0), y(y>0), 'r.')

which would plot only markers at those locations, with no lines.