Data dimensions must agree. Using surf

Question

Olaf Schipper 2022-8-9

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1776330-data-dimensions-must-agree-using-surf

评论： Olaf Schipper 2022-8-9

I want to make a 3D plot using MATLAB with the code below:

[pA, T] = meshgrid(7600000:100000:20000000, 313:1:373);
mu = ((((-0.1146067)+(0.000000697838).*(pA/100000)+(0.0000000003976765).*((pA/100000).^2)+(0.0633612).*log(T)+(-0.01166119).*(log(T).^2)+(0.0007142596).*(log(T).^3))/(1+(0.000006519333).*(pA/100000)+(-0.3567559).*log(T)+(0.03180473).*(log(T).^2)))/1000);
surf(pA, T, mu);
colormap(jet);    % change color map
shading flat    % interpolate colors across lines and faces
colorbar;

pA and T are 61x125 matrices and mu is 61x61. Is there a possibility to equalize this so that I can make the surface plot? Or is there another way to make a 3D plot with these matrices?

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Answer 1

Walter Roberson 2022-8-9

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1776330-data-dimensions-must-agree-using-surf#answer_1023490

在 MATLAB Online 中打开

[pA, T] = meshgrid(7600000:100000:20000000, 313:1:373);

mu = ((((-0.1146067)+(0.000000697838).*(pA/100000)+(0.0000000003976765).*((pA/100000).^2)+(0.0633612).*log(T)+(-0.01166119).*(log(T).^2)+(0.0007142596).*(log(T).^3)) ./ (1+(0.000006519333).*(pA/100000)+(-0.3567559).*log(T)+(0.03180473).*(log(T).^2)))/1000);

surf(pA, T, mu);

colormap(jet); % change color map

shading flat % interpolate colors across lines and faces

colorbar;

You accidentally used / where you needed ./