how to make the contour line more curvy

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yuxuan 2024-3-10

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https://ww2.mathworks.cn/matlabcentral/answers/2092726-how-to-make-the-contour-line-more-curvy

评论： Mathieu NOE 2024-4-26

The contour line is straight, how to make it more curvy? I have uploaded the image i and raw data.

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DGM 2024-3-10

It's not clear how your data is arranged or whether this is even the same data or all that's required to plot it. There's only one 63x189 matrix in the file.

Neither 63 nor 189 are integer-divisible by 12, so it's hard to guess whether this needs to be reshaped. It doesn't look like it does. So how did you plot this? If there's other information needed, please include it.

yuxuan 2024-3-11

BJ.mat

sorry, i have uploaded the wrong data. Here's the correct data.

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VBBV 2024-3-10

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https://ww2.mathworks.cn/matlabcentral/answers/2092726-how-to-make-the-contour-line-more-curvy#answer_1423341

编辑：VBBV 2024-3-10

在 MATLAB Online 中打开

xdata % your x data
ydata % your y data
zdata % your z data
v = min(min(zdata)):1:max(max(zdata))  % add finer step size for smoother /curvier lines 
contourf(xdata,ydata,zdata,v)  % use additional argument 

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VBBV 2024-3-10

编辑：VBBV 2024-3-10

From the figure attachment the data looked like it's sufficiently smoothed, but was plotted at a coarse step. Yes, if the data is coarsely spaced that option doesn't smooth as you told.

@yuxuan , you can try this function to make the lines more curvy given in this link.

https://www.mathworks.com/help/matlab/ref/smoothdata.html