Problem with animated line, not drawing anything

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Santiago Marin 2019-9-2

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/478615-problem-with-animated-line-not-drawing-anything

评论： Santiago Marin 2019-9-3

采纳的回答： Walter Roberson

在 MATLAB Online 中打开

I want to plot the value a metric takes while varying the filter sigma value, the code is as follows:

ImgOrg=imread('ROIOriginal_pgm25.png'); %Load the image
for sigmaVal=0.5:0.1:5
    Imed=imgaussfilt(ImgOrg,sigmaVal); %Apply the filter with the sigma value
    [peaksnr, ~] = psnr(Imed, ImgOrg); %Calculate the metric after applying the filter
    h = animatedline;
    addpoints(h,sigmaVal,peaksnr)
    drawnow limitrate
end

But all I get is an empty figure, I can't see any line or any point. I'm in Matlab R2019a.

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采纳的回答

Walter Roberson 2019-9-2

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/478615-problem-with-animated-line-not-drawing-anything#answer_390129

在 MATLAB Online 中打开

Move the

h = animatedline;

to before the loop.

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Santiago Marin 2019-9-3

Thanks you so much!

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