Contour Plot from Coordinates

Question

Michael 2013-4-22

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/73126-contour-plot-from-coordinates

评论： Udit Srivastava 2017-1-10

Right now I have a matrix with x-coordinates, matrix with y-coordinates, and a matrix with pressure values at these points. I'm trying to create a pressure contour plot based on the pressure values at these points, but I cannot seem to figure it out. Could anyone point me in the right direction of how to accomplish this? Any help would be much appreciated!

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

Kye Taylor 2013-4-22

1
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/73126-contour-plot-from-coordinates#answer_83097

编辑：Kye Taylor 2013-4-22

在 MATLAB Online 中打开

I will assume you have three vectors: x, y, and z (where z represents pressure). For example

x = rand(1,100);
y = rand(1,100);
z = x.^2 + y.^2;

Then, you can try

[xi, yi] = meshgrid(...
    linspace(min(x),max(x)),...
    linspace(min(y),max(y)));
zi = griddata(x,y,z, xi,yi);
contour(xi,yi,zi)

2 个评论
显示无隐藏无

Michael 2013-4-22

Worked great! Thanks for quick response.

Udit Srivastava 2017-1-10

surely, this worked great. But the contour that I got looks like a quarter of a circle. Can you please tell me how to get a contour like a full circle. Thanks!

请先登录，再进行评论。