Why is this wrong?

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Hazwan Arief
Hazwan Arief 2018-7-22
评论： Image Analyst 2018-7-22
clear
clc
[X,Y]=meshgrid(log(5*10.^5):100000:log(10.^7),log(0.6):10:log(2000));
Z=log(((0.037.*(X.^0.8).*Y)/(1+(2.443.*X.^-0.1).*((Y.^2/3)-1))));
mesh(X,Y,Z);
grid on
hold on
  5 个评论
显示 3更早的评论
Jan
Jan 2018-7-22
编辑：Jan 2018-7-22
@Hazwan Arief: I've formatted your code today. Please use the "{} Code" button in the future.
Whenever you get an error message, post it in the forum to show the readers, why you assume that there is something wrong.
Error using mesh (line 83)
Z must be a matrix, not a scalar or vector.
Are you aware that Y.^2/3 is (Y.^2) / 3?
Hazwan Arief
Hazwan Arief 2018-7-22
Noted. Thank you for the input. I'll take note of it in future posts.

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采纳的回答

Jan
Jan 2018-7-22
编辑：Jan 2018-7-22
figure
axes
xv = linspace(log(5e5), log(1e7), 100);
yv = linspace(log(0.6), log(2000), 100);
[X, Y] = meshgrid(xv, yv);
Z = log(((0.037 .* (X.^0.8) .* Y) ./ (1 + (2.443 ./ (X .^ 0.1)) .* ((Y .^ (2/3))-1))));
% Guessed: ^ ^ ^
% Simplified (reduce parentheses):
% Z = log(0.037 .* (X.^0.8) .* Y ./ (1 + 2.443 ./ (X .^ 0.1) .* (Y .^ (2/3) - 1)))
mesh(X, Y, real(Z)); % Z is complex!
grid on
  2 个评论
Hazwan Arief
Hazwan Arief 2018-7-22
Works thanks a lot.
Image Analyst
Image Analyst 2018-7-22
Please accept Jan's answer to give him credit for it. Thanks in advance.

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