Non numeric data X plot
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Tiago Araujo
el 17 de Abr. de 2021
Comentada: Tiago Araujo
el 19 de Abr. de 2021
I need help to solve this plot:
syms X L
X = 0:L/16:L;
Y = 1 + 2*X;
plot (X,Y);
This is just an example, the function I am trying to solve is a bit complicated.
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Respuesta aceptada
Walter Roberson
el 17 de Abr. de 2021
In this particular case, you can plot something meaningful. In most cases, you cannot plot with unresolved symbolic variables unless you use fplot() or fplot3() or fsurf() to have MATLAB automatically substitute specific numeric values for the unresolved values.
You cannot, for example, plot a family of curves expecting it to show you abstract curves such as "s", "s/2", "s/4", "3s/2" and so on. Plotting always requires that something replaces all symbolic variables with particular numeric values.
syms X L
X = 0:L/16:L;
Y = 1 + 2*X;
fplot3(L, X, Y, [0 20]); xlabel('L'); ylabel('X'); zlabel('Y');
5 comentarios
Walter Roberson
el 18 de Abr. de 2021
Editada: Walter Roberson
el 18 de Abr. de 2021
syms X L
X = 0:L/16:L;
for i=1:length(X)
Y(i) = 1 + 2*(X(i)/L);
end
figure
plot(X/L, Y);
xticklabels(string(sym(xticks)) + " L")
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