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Code not showing any result or any error

1 次查看（过去 30 天）
Tushar Das
Tushar Das 2023-5-28
回答： Walter Roberson 2023-5-28
clc
clear all
close all
e = 0.1;
M_min = 0;
M_max = 2 * pi;
N = 20;
function [E, M] = kepler_plot(e, M_min, M_max, N)
f = @(E) E - e * sin(E) - M;
M = linspace(M_min, M_max, N);
E = fzero(f, 0, M);
plot(M, E)
xlabel('Mean Anomaly')
ylabel('Eccentric Anomaly')
title('Keplers Equation')
end
this is the code. matlab is not showing any error or any result.

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回答（1 个）

Walter Roberson
Walter Roberson 2023-5-28
Ran in:
Your code defines kepler_plot but never invokes it.
But you have other problems as well. I had to guess what you were doing.
e = 0.1;
M_min = 0;
M_max = 2 * pi;
N = 20;
[E, M] = kepler_plot(e, M_min, M_max, N)
E = 1×20
0 0.3665 0.7279 1.0803 1.4217 1.7518 2.0719 2.3836 2.6893 2.9912 3.2920 3.5939 3.8996 4.2113 4.5313 4.8615 5.2029 5.5553 5.9167 6.2832
M = 1×20
0 0.3307 0.6614 0.9921 1.3228 1.6535 1.9842 2.3149 2.6456 2.9762 3.3069 3.6376 3.9683 4.2990 4.6297 4.9604 5.2911 5.6218 5.9525 6.2832
function [E, M] = kepler_plot(e, M_min, M_max, N)
f = @(E,m) E - e * sin(E) - m;
M = linspace(M_min, M_max, N);
E = arrayfun(@(m) fzero(@(E)f(E,m), 0), M);
plot(M, E)
xlabel('Mean Anomaly')
ylabel('Eccentric Anomaly')
title('Keplers Equation')
end

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