Although I used 'drawnow' and 'hold on', last plot still appears in animation - MATLAB -

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i read lot of answers here, reason animation still doesn't work expected.

the axis range should vary frame frame. 'hurricane center' caption should remain in center time, captions previous frames must erased. also, i'm afraid of data previous parts remain.

i used hold on , draw now still happens.

the animation can seen here:

image

code:

v = videowriter('test_video.avi'); v.framerate = 4; v.open()     hold on i=1:length(relevant(1,1,:))           if isempty(relevant) == 0              title('lightning around hurricane jerry')         grid on            ylim([interp_jerry(i,2)-radius interp_jerry(i,2)+radius])         xlim([interp_jerry(i,3)-radius interp_jerry(i,3)+radius])          ylabel('latitude')         xlabel('longitude')          text(interp_jerry(i,3),interp_jerry(i,2),txt1);           scatter(relevant(:,3,i),relevant(:,2,i),'.');         drawnow         pause(0.1);            v.writevideo(getframe(fig));     end end   v.close()

the best of 2 worlds:

v = videowriter('test_video.avi'); v.framerate = 4; v.open()     hold on; i=1:length(relevant(1,1,:))           if ~isempty(relevant)  % corrected               if == 1             % prepare first plot , save handles of graphical objects             ht = text(interp_jerry(i,3),interp_jerry(i,2),txt1);              hold on;             hs = scatter(relevant(:,3,i),relevant(:,2,i),'.');              ylabel('latitude')             xlabel('longitude')             title('lightning around hurricane jerry')             grid on           else             % update graphical objects             set(ht, 'position', [interp_jerry(i,3), interp_jerry(i,2)]);             set(hs, 'xdata', relevant(:,3,i) , 'ydata' , relevant(:,2,i));         end          ylim([interp_jerry(i,2)-radius interp_jerry(i,2)+radius])         xlim([interp_jerry(i,3)-radius interp_jerry(i,3)+radius])          drawnow         pause(0.1);            v.writevideo(getframe(fig));     end end   v.close()




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