Non numeric data X plot
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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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Walter Roberson
2021년 4월 17일
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');
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Walter Roberson
2021년 4월 18일
편집: Walter Roberson
2021년 4월 18일
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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