how to plot the data on the iamge

 n=5
x=rand(1,n)*n;
y=rand(1,n)*n;
node_no=(1:n)';
plot(x,y,'color','k')
text(x,y,num2str(node_no))

how to plot the nodes on the image

Answer 1

[Image Analyst]

You have to specify a marker in your plot() call:

plot(x, y, 'k*', 'MarkerSize', 20);

[singh]

output of the coding is plot(x, y, 'k*', 'MarkerSize', 20); but i need below image plotted nodes are on the road image.

[Joseph Cheng]

 hold on

should work