surf得到的云图不对

% 我上传了4个txt文件，分别对应我的点坐标和我的响应，我想用surf绘制不同点坐标的响应云图。其中，我的响应数据是完全对称的，但是surf得到的结果并不对称

load newX3.txt

load newY3.txt

load newZ3.txt

load newStressZ3.txt

surf(newX3,newY3,newZ3,newStressZ3)

Answer 1

[Varun]

Hello!

From the code snippet you just uploaded, I think there’s a syntax error in the way the "surf" function has been called. Calling the surf function with the

surf(newX3,newY3,newZ3,newStressZ3)

syntax passes the variable "newStressz3" as a colour variable, thus changing the way the values get plotted.

To plot the points exactly on the point they are on, try using the hold statement to plot all the variables on the same axes.

surf(newX3)
hold on   
surf(newY3)
surf(newZ3)
surf(newStressZ3)
hold off

The result looks something like this:

You may refer to the following documentation for:

Surface plots: https://www.mathworks.com/help/matlab/ref/surf.html#bvgp3nn-2

Hold statement: https://www.mathworks.com/help/matlab/ref/hold.html?searchHighlight=hold&s_tid=srchtitle_hold_1

Hope this helps!