Value of a variable not changing in the workspace ??

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Ramesh Bala 2019-2-18

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/445541-value-of-a-variable-not-changing-in-the-workspace

评论： Ramesh Bala 2019-2-20

采纳的回答： ibabinaca

在 MATLAB Online 中打开

The value of j goes upto 1025 but i stays at 255 itself ,what's the error in this nested loop??

X = load('x.mat');
Y = load('y.mat');
for i=245:61503
    i = i+10;
    for j=1:1024
        j=j+1; 
        figure(); hold on 
        plot(Y.y(1:i,j))
        set(0,'DefaultFigureWindowStyle','docked')
    end
end
hold off

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Rik 2019-2-18

Why don't you try explaining what you want to do? That way we can try to solve your actual issue, instead of the errors from your solution.

Ramesh Bala 2019-2-18

Alright I have x =1x1024 and y = 61503x1024 matrices

X =x,Y=y

I'm trying to plot a 2D plot and 3D plot for it at every 10th step:

Like for y 1:247 and then y 247:494 till 61503 , x goes as 1 and linearly to 1024

so the normal plot goes as for 2D : plot(Y.y(1:247,1) for the first plot and goes on

I would like to convert this data to 3D values and then plot surf for it.

May be not for all the values just for 1,mid value and end value.

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采纳的回答

ibabinaca 2019-2-18

1
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/445541-value-of-a-variable-not-changing-in-the-workspace#answer_361534

编辑：ibabinaca 2019-2-18

在 MATLAB Online 中打开

Why are you putting j = j+1? There is no need to put it with matlab.

X = load('x.mat');
Y = load('y.mat');
for i=245:10:61503
    for j=1:1024
        figure(); hold on 
        plot(Y.y(1:i,j))
        set(0,'DefaultFigureWindowStyle','docked')
    end
end
hold off