I am getting the wrong plots for g1 and g2..help

Question

James 2017-4-16

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https://ww2.mathworks.cn/matlabcentral/answers/335578-i-am-getting-the-wrong-plots-for-g1-and-g2-help

回答： GEEVARGHESE TITUS 2017-4-16

t = 1:500;
A = 4;B = 10;C = 2.4; D = 2;
g = sin(t/30);               %Original Sin Wave
g1 = A*g.*(t+B); %1st wave transformation
g2 = C*g.*(t*D);   %2nd wave transformation
plot(t,g,t,g1,t,g2);
legend('g(t) = sin(t/30)', 'g1(t) = Ag(t + B)', 'g2(t) = Cg(Dt)')
title('Wave Transformation');       % percent signs are used to comment code
xlabel('time');
ylabel('value');

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Answer 1

Star Strider 2017-4-16

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/335578-i-am-getting-the-wrong-plots-for-g1-and-g2-help#answer_263169

在 MATLAB Online 中打开

It’s not clear what you intend.

If I interpret your legend correctly, the changed lines may be what you want.

The Code —

t = 1:500;
A = 4;B = 10;C = 2.4; D = 2;
% % g = sin(t/30);               %Original Sin Wave
% % g1 = A*g.*(t+B); %1st wave transformation
% % g2 = C*g.*(t*D);   %2nd wave transformation
g = @(t) sin(t/30);               %Original Sin Wave
g1 = A*g(t+B); %1st wave transformation
g2 = C*g(t*D);   %2nd wave transformation
plot(t,g(t),t,g1,t,g2);
legend('g(t) = sin(t/30)', 'g1(t) = Ag(t + B)', 'g2(t) = Cg(Dt)')
title('Wave Transformation');       % percent signs are used to comment code
xlabel('time');
ylabel('value');