waitbar bar inside two for loops

Question

Alejandro Fernández 2020-8-10

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/577825-waitbar-bar-inside-two-for-loops

评论： Alejandro Fernández 2020-8-10

Hi, I have the folowing code (it's just a example)

maxI = 2;
maxJ = 3;
cont = 1/(maxI*maxJ)
for i = 1:maxI
    for j = 1 : max
        waitbar(cont,sprintf('Calculating i = %d, j = %d',i,j))
        cont = cont + 1/(maxI*maxJ)
        pause(rand/10) % here is the code
    end
end

If I execute this, every waitbar appears in a new figure, and I want it to just be a figure and automatically update, does someone know?

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Answer 1

Geoff Hayes 2020-8-10

1
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https://ww2.mathworks.cn/matlabcentral/answers/577825-waitbar-bar-inside-two-for-loops#answer_477748

在 MATLAB Online 中打开

Alajendro - rather than creating a new waitbar on each iteration of the inner loop, just create it once and then re-use it. For example,

maxI = 2;
maxJ = 3;
cont = 1/(maxI*maxJ);
hWaitbar = waitbar(0,sprintf('Calculating i = %d, j = %d',0,0)); % create the waitbar
for i = 1:maxI
    for j = 1 : maxJ
        waitbar(cont, hWaitbar, sprintf('Calculating i = %d, j = %d',i,j)) % update the waitbar
        cont = cont + 1/(maxI*maxJ);
        pause(rand/10); % here is the code
    end
end