I have used the following code to create a wsn virtual structure with 4*4 grid-cells and have deployed 100 nodes in it. Now i want to select a wsn area-header which would be in the center of the whole wsn virtual structure. How could that be done. Pl

I have used the following code to create a wsn virtual structure with 4*4 grid-cells and have deployed 100 nodes in it. Now i want to select a wsn area-header which would be in the center of the whole wsn virtual structure. How could that be done. Please help.

 % WSN Grid structure with 4*4 cells made
NrGrid = 4;                        
x = linspace(0, 100, NrGrid+1);
[X,Y] = meshgrid(x);
figure(1)
plot(X,Y,'k')
hold on
plot(Y,X,'k')
hold off
set(gca, 'Box','off', 'XTick',[], 'YTick',[])
axis square                                          
% grid formation ends
% Nodes deployment started
NrGrid = 4;                                     
coords = rand(100,2) * NrGrid + 1;
scatter(coords(:,1),coords(:,2));
set(gca, 'XTick', 1:NrGrid+1, 'YTick', 1:NrGrid+1)
grid on

Answer 1

[Walter Roberson]

[mindist, minidx] = sqrt(sum((coords - NrGrid/2).^2,2));

coords(minidx,:) is the closest node to the center.

[Parveen verma]

When i run the code,following error comes:-

??? Error using ==> sqrt Too many output arguments.

Error in ==> techworks at 48 [mindist, minidx] = sqrt(sum((coords - NrGrid/2).^2,2));

Please help.

[Walter Roberson]

[mindist, minidx] = min(sqrt(sum((coords - NrGrid/2).^2,2)));