Trying to plot array points on a graph.

I have an matrix that I am trying to turn into a picture using the graphing function. it is a 10x10 matrix with numbers ranging from 0 to 5 and I'm trying to figure out how to plot only certain points with the array itself serving as my x/y axis. I have tried the graphing function as well as nesting a loop function to allow for the figure, but I'm still coming up with nothing.

right now my matrix is as follows:

0 0 0 0 0 0 5 0 5 0

0 0 0 2 0 0 0 0 0 0

0 2 0 1 0 4 2 1 3 0

0 1 0 1 0 0 0 0 0 0

4 3 0 1 0 0 0 0 0 0

4 0 0 3 0 3 1 1 2 0

0 0 5 0 0 0 0 0 0 0

0 0 0 0 0 5 0 0 0 0

0 3 1 1 1 2 0 0 4 0

0 0 0 0 4 0 0 5 0 0

if anyone can help isolare the non-zero values to use as data points i would be most grateful.

[Jim Riggs]

Try This:

Assume that AA is the matrix of data

[row,col] = size(AA);
figure;
for ii=1:row
    for jj=1:col
        if AA(ii,jj) > 0  % specify criterion for the points you want to plot
            plot(jj, col-ii, 'or', 'LineWidth',1.5,'MarkerSize',10)
            hold on;
        end
    end
end
hax = gca;
set (hax, 'Xlim', [0 col+1], 'Ylim', [0 row+1]);
grid on;
title('Non-zero Values');
xlabel('Column');
ylabel('Row');

Answer 1

[Jim Riggs]

You might also try this:

[row,col] = size(AA);  % AA is the data matrix
figure;
for ii=1:row
    for jj=1:col
        if AA(ii,jj) > 0  % specify criterion for the points you want to plot
            plot(jj, col-ii, 'or', 'LineWidth',1.5,'MarkerSize',10)
            hold on;
        else
            plot(jj, col-ii, 'xk', 'LineWidth',0.5,'MarkerSize',6)
            hold on;
        end
    end
end
hax = gca;
set (hax, 'Xlim', [0 col+1], 'Ylim', [0 row+1]);
grid on;
title('Non-zero Values');
xlabel('Column');
ylabel('Row');