How to plot the maximum value as an "asterik" everything else is just a normal line?

the maximum value as an "asterik" everything else is just a normal line

[Rik]

What do you mean? A line plot where one value should be plot with a marker as well?

[Walter Roberson]

plot(x, y, 'k-', x_at_max, y_at_max, 'r*')

Answer 1

[Steven Lord]

If you want markers at the rest of the points on the line and a different / larger / different color marker at the maximum, use the code in Walter's comment.

If you want a marker ONLY at the maximum and you're using release R2016b or later, use the MarkerIndices property of the line to specify you only want a marker at the maximum.