Running two portions of a script simulateneously?

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matlabuser12 2015-4-29

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/214311-running-two-portions-of-a-script-simulateneously

I am trying to update a graph animation in sync with a played movie. How do i structure the while loop so that when the movie(...) line is running the plot loop is running as well?

I have a movie playing using the movie function a la:

movie(video, mov,1,xyloObj.FrameRate)

I am following this code for a graph

%# control animation speed
DELAY = 0.01;
numPoints = 600;
%# create data
x = linspace(0,10,numPoints);
y = log(x);
%# plot graph
figure('DoubleBuffer','on')                  %# no flickering
plot(x,y, 'LineWidth',2), grid on
xlabel('x'), ylabel('y'), title('y = log(x)')
%# create moving point + coords text
hLine = line('XData',x(1), 'YData',y(1), 'Color','r', ...
    'Marker','o', 'MarkerSize',6, 'LineWidth',2);
hTxt = text(x(1), y(1), sprintf('(%.3f,%.3f)',x(1),y(1)), ...
    'Color',[0.2 0.2 0.2], 'FontSize',8, ...
    'HorizontalAlignment','left', 'VerticalAlignment','top');
%# infinite loop
i = 1;                                       %# index
while true      
    %# update point & text
    set(hLine, 'XData',x(i), 'YData',y(i))   
    set(hTxt, 'Position',[x(i) y(i)], ...
        'String',sprintf('(%.3f,%.3f)',[x(i) y(i)]))        
    drawnow                                  %# force refresh
    %#pause(DELAY)                           %# slow down animation
        i = rem(i+1,numPoints)+1;                %# circular increment
        if ~ishandle(hLine), break; end          %# in case you close the figure
    end