Surf plot using meshgrid

Question

Mohanned Al Gharawi 2019-9-23

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/481713-surf-plot-using-meshgrid

回答： Mohanned Al Gharawi 2019-9-24

snr values.xlsx

Hello everybody,

I have a set of snr values for defects in a concrete specimen for different depths as attached in excel sheet. I used the wavelet method to analyze them into several levels.

Anyhow, I need them to be plotted into 3D by using the command surf. Would snybody help me with that?

Thank you in advance.

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Rik 2019-9-23

What have you already tried? Have you read the doc for the surf function?

Mohanned Al Gharawi 2019-9-23

I'm trying to plot a 3D x-axis represents the defect depths, y-axis is the levels and the z-direction has the values of snr.

Thanks

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Answer 1

Shubham Gupta 2019-9-24

1
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/481713-surf-plot-using-meshgrid#answer_393211

在 MATLAB Online 中打开

Try this :

snr_data = xlsread('snr values.xlsx');
depth = [1,2,3,5];
level = 1:7;
depth_mesh = meshgrid(depth,level).';
level_mesh = meshgrid(level,depth);
surf(depth_mesh,level_mesh,snr_data)

I hope it helps !