Read First n line then plot and read next lines and plot and collectively make movie of all graphs.

Question

Yashvardhan Bhati 2022-8-24

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1784975-read-first-n-line-then-plot-and-read-next-lines-and-plot-and-collectively-make-movie-of-all-graphs

评论： Yashvardhan Bhati 2022-8-27

I am trying to read data from file. Now i would like to read first suppose n=337 lines and plot the data for the same, now repeat same for the next 337 lines and untill the end. Now i would like to make movie of the graphs\plots with same x and y axis generated into single mvi file.

T=readtable('Plug.txt','ReadVariableNames',true);

F = scatteredInterpolant(T.XC, T.YC, T.VY);

[xmin, xmax] = bounds(T.XC);

[ymin, ymax] = bounds(T.YC);

x0 = linspace(xmin, xmax, 409);

y0 = linspace(ymin, ymax, 337);

[xq, yq] = meshgrid(x0, y0);

zq = F(xq, yq);

this is how i am planning to go ahead with reading the file but how to loop and save all the plots into animation. One of the static images can be found below but what i want is that movie whcih procceds with first showing y=0 data and then y=1 y=2.... till y=87.

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Answer 1

KSSV 2022-8-24

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链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1784975-read-first-n-line-then-plot-and-read-next-lines-and-plot-and-collectively-make-movie-of-all-graphs#answer_1032185

在 MATLAB Online 中打开

T=readtable('https://in.mathworks.com/matlabcentral/answers/uploaded_files/1106475/Plug.txt\Plug.txt','ReadVariableNames',true);
x = T.XC ;
y = T.YC ;
vy = T.VY ;
xv = unique(x) ;
yv = unique(y) ;
nx = length(xv) ;
ny = length(yv) ;
figure(1)
filename = 'test.gif';
for i = 1:ny
    plot(x(y==y(i)),vy(y==y(i)))
    ylim([-8 1])
    drawnow
    frame = getframe(1);
    im = frame2im(frame);
    [imind,cm] = rgb2ind(im,256);
    if i == 1
        imwrite(imind,cm,filename,'gif', 'Loopcount',inf);
    else
        imwrite(imind,cm,filename,'gif','WriteMode','append');
    end
end