Plot 3 with data set and one equation

Question

Redwood 2019-2-13

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/444723-plot-3-with-data-set-and-one-equation

评论： Redwood 2019-2-13

Dear all.

I have data set for EQ and lamda, and I have one equations about C.

I would like to make a figure using plot3 or surf. Please let me know how to to it.

Thank you very much in advance.

Sincerely yours,

J1

EQ lamda

0.7835 0.118

0.7939 0.115

0.8043 0.1121

0.8148 0.1093

0.8254 0.1066

0.8360 0.104

0.8468 0.1014

0.8577 0.0989

0.8687 0.1347

0.8799 0.1195

0.8911 0.1066

0.9024 0.0845

ep = 1;

gam1 = 0.3;

eta11 = 0.001;

eta21 = 0.003;

A = gam1+gam1*eta11-1;

C = (ep*eta11)^((gam1*eta11)/A)*EQ.^((-gam1*eta21)/A)*lamda.^(1/A);

Plot3(EQ,lamda, C);

Surf(EQ, lamda, C);

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Answer 1

KSSV 2019-2-13

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https://ww2.mathworks.cn/matlabcentral/answers/444723-plot-3-with-data-set-and-one-equation#answer_360832

在 MATLAB Online 中打开

A= [  0.7835  0.118 
  0.7939  0.115 
  0.8043  0.1121 
  0.8148  0.1093 
  0.8254  0.1066 
  0.8360  0.104 
  0.8468  0.1014 
  0.8577  0.0989 
  0.8687  0.1347 
  0.8799  0.1195 
  0.8911  0.1066 
  0.9024  0.0845 ] ;
EQ  = A(:,1) ;
lamda  = A(:,2) ;
[EQ,lamda] = meshgrid(EQ,lamda) ;
ep = 1;
gam1 = 0.3;
eta11 = 0.001;
eta21 = 0.003;
A = gam1+gam1*eta11-1;
C = (ep*eta11).^((gam1*eta11)/A)*EQ.^((-gam1*eta21)/A)*lamda.^(1/A);
surf(EQ,lamda, C);