MATLAB: Plotting distance values with lines

linesplotting

Hi, I have this result. I have calculated the distance between centre(red) and all the scatter points. So i want to display those distance values with each corresponding line in the figure. Any idea guys………..

Best Answer

I’m not certain what you intend by ‘display’, but if you want the distances as numbers, perhaps near each point, I suggest you experiment with the text function.

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MATLAB: Draw lines from one point to the all others

If I understand correctly what you want to do, this works.

The Code —

xy = rand(5, 2);
centrd = mean(xy);                                                                  % Calculate Centroid
[dist1,idx1] = pdist2(xy, centrd, 'euclidean', 'Smallest', size(xy,1));             % Distances From Centroid
centre_point = xy(idx1(1),:);                                                       % Point With Shortest Distance To Centroid
[distances,idx2] = pdist2(xy, centre_point, 'euclidean', 'Smallest', size(xy,1));   % Distances From Centre Point
Distance_Sum = sum(distances);                                                      % Sum Of Distances To Centre Point
figure(1)
plot(xy(:,1), xy(:,2), 'pg', 'MarkerSize',10, 'MarkerFaceColor','g')
hold on
plot([repmat(centre_point(1),size(xy,1),1) xy(:,1)]', [repmat(centre_point(2),size(xy,1),1) xy(:,2)]')
hold off
grid
text(centrd(1), centrd(2), sprintf('\\Sigma \\itdist\\rm = %.4f',Distance_Sum), 'FontSize',10)

The Plot —

MATLAB: Displaying the level curve of a probability density function

mvnpdf

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MATLAB: Draw lines from one point to the all others

MATLAB: Displaying the level curve of a probability density function

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