How to create animation of Matlab plotting points on a graph.

Question

jameskl 2014-9-13

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/154659-how-to-create-animation-of-matlab-plotting-points-on-a-graph

回答： Image Analyst 2014-9-13

I have a matrix A=[n,n,n,n,n] and another B=[n,n,n,n;n,n,n]. When Matlab plots it there are two lines. I want to see Matlab plot each line. Is there any way to do that?

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Answer 1

Image Analyst 2014-9-13

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/154659-how-to-create-animation-of-matlab-plotting-points-on-a-graph#answer_151599

在 MATLAB Online 中打开

FAQ: http://matlab.wikia.com/wiki/FAQ#How_can_I_create_a_movie_from_my_MATLAB_figures.3F

Also, see this demo I made for another question http://www.mathworks.com/matlabcentral/answers/153962#answer_151015. Uncomment the stuff about videoWriter if you want to save the movie to disk.

clear all;
clc;
x=[-3:0.1:3];
y=[-3:0.1:3];
t=[0:0.1:5];
hFigure = figure;
numberOfFrames = length(t);
% Set up the movie structure.
% Preallocate recalledMovie, which will be an array of structures.
% First get a cell array with all the frames.
allTheFrames = cell(numberOfFrames,1);
vidHeight = 344;
vidWidth = 446;
allTheFrames(:) = {zeros(vidHeight, vidWidth, 3, 'uint8')};
% Next get a cell array with all the colormaps.
allTheColorMaps = cell(numberOfFrames,1);
allTheColorMaps(:) = {zeros(256, 3)};
% Now combine these to make the array of structures.
myMovie = struct('cdata', allTheFrames, 'colormap', allTheColorMaps);
% Create a VideoWriter object to write the video out to a new, different file.
% writerObj = VideoWriter('problem_3.avi');
% open(writerObj);
% Need to change from the default renderer to zbuffer to get it to work right.
% openGL doesn't work and Painters is way too slow.
set(gcf, 'renderer', 'zbuffer');
  
[x, y] = meshgrid(-3:.1:3,-3:.1:3);
for frameIndex = 1 : numberOfFrames
  z = exp(-(x-t(frameIndex)).^2-(y-t(frameIndex)).^2);
  cla reset;
  % Enlarge figure to full screen.
%   set(gcf, 'Units', 'Normalized', 'Outerposition', [0, 0, 1, 1]);
  surf(x,y,z);
  axis('tight')
  zlim([0, 1]);
  caption = sprintf('Frame #%d of %d, t = %.1f', frameIndex, numberOfFrames, t(frameIndex));
  title(caption, 'FontSize', 15);
  drawnow;
  thisFrame = getframe(gca);
  % Write this frame out to a new video file.
%    writeVideo(writerObj, thisFrame);
  myMovie(frameIndex) = thisFrame;
end
% close(writerObj);
message = sprintf('Done creating movie\nDo you want to play it?');
button = questdlg(message, 'Continue?', 'Yes', 'No', 'Yes');
drawnow;  % Refresh screen to get rid of dialog box remnants.
close(hFigure);
if strcmpi(button, 'No')
   return;
end
hFigure = figure;
% Enlarge figure to full screen.
% set(gcf, 'Units', 'Normalized', 'Outerposition', [0, 0, 1, 1]);
title('Playing the movie we created', 'FontSize', 15);
% Get rid of extra set of axes that it makes for some reason.
axis off;
% Play the movie.
movie(myMovie);
uiwait(helpdlg('Done with demo!'));
close(hFigure);