Change marker and color plotting

HI, i want to know how i can change color and marker of a signal, but not all signal, just a point. I mean, i want to change color and marker to a point (x,y).

[Thomas]

A little ambiguity in your question.. Do you want to change the marker and color of just a single point on the signal?

Answer 1

[John Petersen]

I think the answer in this question is similar and may help: http://www.mathworks.com/matlabcentral/answers/33614-color-coding-a-2d-plot

or do you just want plot(x,y,color) where color is a string such as 'g','r','m', etc.