not enough arguments in zeros function,

the code is :

function [] = my_scatter(N, L, coverage_range)
% ref input 50,50,20
% non-overlap distance > 5
% coverage_range ; % the shorter, the deeper tree
% == random coordination == 
distinct_BOUND = 5;
Z = zeros(N,2);
T = rand(1,2)*L;
Z(1,:) = T;
for i = 2:N
    u = true;
    v = false;               
    while u || v       
        T = rand(1,2)*L;        
        % u is true if new added node is too far to all node
        u = true;
        for j = 1:i-1
            if pdist([T;Z(j,:)],'euclidean') < coverage_range
                u = false;
            end
        end       
        % v is true if if new added node is too near to one node
        v = false;
        for j = 1:i-1
            if pdist([T;Z(j,:)],'euclidean') < distinct_BOUND
                v = true;
            end
        end       
    end    
    Z(i,:) = T;
end
% == figure raw nodes ==
figure;
scatter(Z(:,1),Z(:,2));
s = sprintf('N-%d,L-%d, cr-%d nodes', N, L, coverage_range);
title(s); 
s1 = sprintf('N%d_L%d_cr-%d_nodes.png', N, L, coverage_range);
print(gcf,'-dpng',s1) ;
% == find root ==
m = mean(Z);
d = pdist([m;Z(1,:)],'euclidean');
r = Z(1,:);
root = 1;
for i = 2:N
    if pdist([m;Z(i,:)],'euclidean') < d
        d= pdist([m;Z(i,:)],'euclidean');
        r = Z(i,:);
        root = i;
    end
end
Weight = zeros(N,N);
for i = 1:N
    for j = 1:N
        Weight(i,j) = pdist([Z(j,:) ; Z(i,:)],'euclidean');
    end
end
% set a upper bound for distance, no connection for distance exceed it.
% == remove 'weak' link to generate mesh
for i = 1:N
    for j = 1:N
        if  Weight(i,j) > coverage_range
            Weight(i,j) = 0;    % cancel 'too long' distance
        end
    end
end
% == shortest path alg ==
G = Weight;
G = sparse(G);
% root = 41;
[dist, path, pred] = graphshortestpath(G, root);
% Dijkstra,Time complexity is O(log(N)*E)
NUM_link = length(cell2mat(path));
G_adj = zeros(N,N);
for i = 1:N
    for j = 1:N
        if G(i,j)~=0
            G_adj(i,j) = 1;
        end
    end
end
% == figure mesh ==
figure; 
gplot(G_adj,Z);
s = sprintf('N-%d,L-%d, cr-%d mesh', N, L, coverage_range);
title(s);
s2 = sprintf('N%d_L%d_cr-%d_mesh.png', N, L, coverage_range);
print(gcf,'-dpng',s2) ;
depth_MAX = 20;
path_mat = zeros(N, depth_MAX);
depth = zeros(N,1); 
for i = 1:N
    t = cell2mat(path(i));
    depth(i) = length(t);
    t(depth_MAX)=0;
    path_mat(i,:) = t;
end
Depth = max(depth); % in case multi output
Depth = Depth(1);
G_tree = zeros(N,N);
for i = 1:N
    for j = 1:nnz(path_mat(i,:))-1
        s = path_mat(i,j);
        t = path_mat(i,j+1);
        G_tree(s,t) = 1;
    end
end
degree = zeros(1,N);
for i = 1:N
    degree(i) = nnz( G_tree(i,:) );
end
degree_avg = mean(degree); 
% == figure tree ==
figure; 
gplot(G_tree,Z);
s = sprintf('N-%d,L-%d, cr-%d tree', N, L, coverage_range);
title(s);
s3 = sprintf('N%d_L%d_cr-%d_tree.png', N, L, coverage_range);
print(gcf,'-dpng',s3) ;
end

[Stephen23]

@malik shastry: please edit your question and show us the complete error message. This means all of the red text.

Answer 1

[Walter Roberson]

You cannot execute that code just by clicking on Run or using one of the execution menu entries. You need to go down to the command line and call it there, passing in three scalar parameters, the first of which is a positive integer. For example,

my_scatter(17, 89.14, 6.1235)