How to change the shape of node

I am learning wireless sensor network basic. I want to change the shape of nodes . Here nodes are in circle shape but I want nodes is in car shape. Please help me. How I can do that?

[Jan]

How do you create the image currently? How are the coordinates defined?

[Vartika Agarwal]

This is the code . I want to change the shape of node. How I can do this ?

clc;
clear all;
%imp=menu('Generate Network','DOS Detection');
no_nodes=input('Enter the no of nodes');
net_length=input('Enter the Length of the network');
net_width=input('Enter the width of the network');
for i=1:no_nodes
    x_loc(i)=net_length*rand;
    y_loc(i)=net_width*rand;
    node_id(i)=i;
 
    plot(x_loc(i),y_loc(i),'b^','linewidth', 2);
    text(x_loc(i)+10,y_loc(i)+10,['N',num2str(i)]);
    
    hold on;
    xlabel('Network Length');
    ylabel('Network Width');
    grid on;
    pause(0.5);
end
 
source=round(no_nodes*rand);
if source==0
    source=5;
end
destination=round(no_nodes*rand);
if destination==0
    destination = 6;
end
figure(1);

[Jan]

Thanks. Now it is clear, how the coordinates are defined. The next step is to explain, what exactly a "car shape" is.

https://www.google.com/search?q=car+gif&source=lnms&tbm=isch&sa=X&biw=1366&bih=654

Answer 1

[Sulaymon Eshkabilov]

Here is a kind of helpful code you can start working with to substitute the plot markers with images w.r.t your definitions:

https://www.mathworks.com/matlabcentral/answers/481183-insert-image-as-a-marker-in-plot

[Vartika Agarwal]

This is the car shape. I want to plot this shape instead of *.

I am trying to execute this code but it does not work for me.

x = 1:10;
y = 5*rand(size(x)) + 2.5;
[marker,m] = imread('images.png');
marker = imresize(marker,0.5);
markersize = [1,1]; %//The size of marker is expressed in axis units, NOT in pixels
x_low = x - markersize(1)/2; %//Left edge of marker
x_high = x + markersize(1)/2;%//Right edge of marker
y_low = y - markersize(2)/2; %//Bottom edge of marker
y_high = y + markersize(2)/2;%//Top edge of marker
for k = 1:length(x)
imagesc([x_low(k) x_high(k)], [y_low(k) y_high(k)],marker)
hold on
end
axis equal
hold off

[Jan]

Please explain, what "does not work" means. Sharing this important information is a good idea, if you want to get the problem solved.

[Vartika Agarwal]

Means i want to place node in car shape instead of *. This code show only 1 image in the whole graph . I want to place multiple car shape node in graph.