2D plot

I have let 4 entries.

x=[1 2 3 4]

y=[-1 2 -3 -4]

i want to plot x and y. let plot(x,y,' * ');

but i need the index number with each ' * '. If i plot [3; -3], then with ' * ' i must be given index number 3.on the plot window.

index=[1 2 3 4] , for 4 points of x and y.

Answer 1

[Richard]

Are you thinking of something like this?

    clear all
  x=[1,2,3,4];
  y=[-1,2,-3,-4];
  strValues = num2str([x(:) y(:)],'(%d,%d)');
  plot(x,y,' * ');
  text(x,y,strValues,'VerticalAlignment','bottom');

[Tallha Akram]

You have given me clue. thanks .