CODEWITHSUNDEEP
matlabmatlab-figure
will_cheuk
will_cheuk

Reputation: 379

How to delete existing graph and plot a new graph?

In my program, I am doing a least squared optimization problem, i.e. \sum_{i} (y_{i}-y_{i}^{market})^2. At the same time, I want to plot the modeled y_{i} against the y_{i}^{market}. To program it which suit my needs, I define OutputFcn during my optimization and write the code as follow: (Suppose x represent the x-coord

figure()
hold on
plot(x,[y_{1},y_{2},...,y_{n}]);
plot(x,[y_{1}^{market},y_{2}^{market},...,y_{n}^{market}]);

When I run the program, I can draw a new calculated curves on the same plot. Unfortunately, the final plot is difficult to view it. In order to make it to be visible to read, I want to delete the curve (calculated values) obtained in the previous iteration and plot the new curve (calculated values) in the new iteration on the existing plot. What should I do to the current code to fulfill my needs?

Upvotes: 0

Views: 59

Answers (1)

Ander Biguri
Ander Biguri

Reputation: 35525

Something like:

hold on
for iterations
    clf
    % PLOT STUFF
    drawnow
    pause(0.1)
end
  • clf clears the figure
  • drawnow forces drawing on screen
  • pause stops execution for a bit so you have time to see it.

Upvotes: 2

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