how do i number all nodes in a graph

hello.. i am a beginner in matlab. i have a matlab code which plots a graph. please help me in numbering all the points(nodes) in the graph. here is my matlab code. "Nodes3.txt" is file with all the nodes that are to be plot.

clc
clear all
close all

load Elements3.txt
load Nodes3.txt

nrelm=size(Elements3,1);
nnod=size(Nodes3,1);

Edof=zeros(nrelm,4);%
Ex=zeros(nrelm,3); Ey=Ex; Ez=Ex;
Edof(:,1)=sort(1:nrelm);
Elm(:,1)=sort(1:nrelm);

for i=1:nrelm
    Edof(i,2:7)=[2*Elements3(i,6)-1 Elements3(i,6)*2 2*Elements3(i,7)-1 ...
        Elements3(i,7)*2 2*Elements3(i,8)-1 2*Elements3(i,8)];  
    Elm(i,2:4)=Elements3(i,6:8);  
    Ex(i,:)=[Nodes3(Elm(i,2),2) Nodes3(Elm(i,3),2) Nodes3(Elm(i,4),2)];
    Ey(i,:)=[Nodes3(Elm(i,2),3) Nodes3(Elm(i,3),3) Nodes3(Elm(i,4),3)];
    Ez(i,:)=[Nodes3(Elm(i,2),4) Nodes3(Elm(i,3),4) Nodes3(Elm(i,4),4)];    
end

nrdof=max(max(Edof));

figure(1);
hold on;
for i=1:length(Edof(:,1));
    plot(Ex(i,[1:end 1]),Ey(i,[1:end 1]));
end
axis equal

[Image Analyst]

I fixed your formatting for you this time. For next time read this link

Answer 1

[KSSV]

Use the PlotMesh code from the below link:

http://in.mathworks.com/matlabcentral/fileexchange/32029-plate-bending/content/Plate%20Bending/PlotMesh.m

To display the node numbers, you un comment the lines at the end of the code which says; To display the node numbers. Alternatively have a look on the below code as well:

http://in.mathworks.com/matlabcentral/fileexchange/34143-meshing-thin-shells-using-four-noded-elements