Question

Write a code that plots the rows of a matrix (rows) one by one. after plotting eah vector, if you clicked the plot with the mouse it should store that row (array) in a new matrix. [MATLAB}

Answer 1

function plotMatrixAndCopyClicks(M)
% M = original matrix, newMatrix = new matrix

rows = numel(M(:,1));
cols = numel(M(1,:));
newMatrix = [];

figure
axes('NextPlot', 'add') % keep adding the next plots on the figure
k = 1;
h = plot(M(k,:),'-','LineWidth',2, 'color',rand(1,3)); % plotting the 1st row of the original matrix while saving the handles in h
set(h,'ButtonDownFcn',{@selectedPlot,h}) % getting the click event

%% function to respond to clicks
function selectedPlot(objH,~,~)
set(objH, 'LineStyle','--'); % change the line style of clicked line to --
data = get(objH,'ydata'); % retrieve data of the selected line
newMatrix(k,1:cols) = data; % store the data retrieved to new matrix
disp('New Matrix: ')
disp(newMatrix);
save('newMatrix.mat','newMatrix') % save the new matrix

k = k+1;
if k<=rows
h = plot(M(k,:),'-','LineWidth',2, 'color',rand(1,3)); % plot the rest of the rows after every click until all the rows of M are exhausted
end
set(h,'ButtonDownFcn',{@selectedPlot,h}) % getting the click event recursively
end

end

7 6 5 4 3 1 3.5 4.5 1 1.5 2 2.5 3 4. 5 LO C

Command Window Figure 1 [2,3,4,5,6.. > M= Help Window Desktop Tools Insert Edit View File 1,2,3,4,7. .. 4,1,3,6,5 м - 7 4 3 2. 7 4 3 2 1 6 5 3 1 4 > plotMatrixAndCopyClicks (M) 5 New Matrix: 5 4 3 2 4 New Matrix: 6 4 2 5 3 1 4 >>load ('newMatrix.mat') >>newMatrix 2 newMatrix = 5 4 1 3 2 4.5 4 3.5 3 2 2.5 1.5 1 5 3 4 >> X i st CC st 00 rt

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