3d line plot help

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Robert Tapia
Robert Tapia 2020-6-25
评论： Robert Tapia 2020-6-25
T = linspace(-7.5,17,120);
S = linspace(-4.5,28,120);
Y = Piecewise(T,S);
function Yn = Piecewise(X1,X2)
T = linspace(-7.5,17,120);
N = length(T);
for n = 1:N
if X1(n) > 0
Y1(n) = cos(X1(n));
end
if X1(n) <= 0
Y1(n) = exp(X1(n));
end
if X2(n) > 0
Y2(n) = sin(X2(n));
end
if X2(n) <= 0
Y2(n) = 3*X2(n);
end
Yn = Y1(n).*Y2(n)
end
end
need some help so im asked to create a 3d line plot for 2 arrays T and S and then Y which solves a piecewise function, although im getting an error that states "vectors must be the same length " ? is my issue that Y isnt being properly solved ?

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回答（1 个）

Rafael Hernandez-Walls
Using this function:
function Y = Piecewise(X1,X2)
T = linspace(-7.5,17,120);
N = length(T);
for n = 1:N
if X1(n) > 0
Y1(n) = cos(X1(n));
end
if X1(n) <= 0
Y1(n) = exp(X1(n));
end
if X2(n) > 0
Y2(n) = sin(X2(n));
end
if X2(n) <= 0
Y2(n) = 3*X2(n);
end
Y(n) = Y1(n).*Y2(n);
end
  1 个评论
Robert Tapia
Robert Tapia 2020-6-25
sorry can you explain a bit the difference from mine and why it would fix the vector length when plotting

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