how can i do to plot node i and eliminate node j?

Question

ali hadjer 2015-11-15

0
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https://ww2.mathworks.cn/matlabcentral/answers/254894-how-can-i-do-to-plot-node-i-and-eliminate-node-j

关闭： MATLAB Answer Bot 2021-8-20

hello

i have this programm in matlab:

net = [1:n;rand([1,n])*x;rand([1,n])*y];
net1 = net;
hold on;
plot(net(2,:),net(3,:),'bo','MarkerSize',5,'MarkerFaceColor','b');

an i want to eliminate in plot a nodes j * whos distance is inferieur than *r (range) of the first node i but she doesn't work :

figure;
if isfield(handles,'net')
    n=numel(handles.net(1,:));
      for i = 1:n
     % for j = i+1:n
     for j = 1:n
          X1 = handles.net(2,i);
          Y1 = handles.net(3,i);
          X2 = handles.net(2,j);
          Y2 = handles.net(3,j);
          xSide = abs(X2-X1);
          ySide = abs(Y2-Y1);
          d(i,j) = sqrt(xSide^2+ySide^2);% distance euclidienne ENTRE NOEUD
        end
      end
     for i = 1:n
          for j = 1:n
            if (d(i,j)<=(handles.r) )
             handles.net(2,j)=0;
             handles.net(3,j)=0;
             plot([X1,Y1],[X2,Y2],'bo','MarkerSize',5,'MarkerFaceColor','b'); 
            end
         end
     end
end