- set up a vector x between 0 and 1
- compute y
- plot y vs. x
- hold on
- do the same for the interval [1 3]
how to plot y=ax+b for different equations
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How to plot a line for different equations for the x and y, for example: y=1 when 0<x<=1; y=2x+1 when 1<x<=3; y=-2x-1 when 3<x<=5; y=0 when x>5
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Answers (2)
Titus Edelhofer
on 25 Jun 2013
Hi Vivi,
Titus
2 Comments
Titus Edelhofer
on 25 Jun 2013
Not really. You can either compute one vector for plotting like Iain did, or plot the different pieces separately using "hold on" in between.
Iain
on 25 Jun 2013
x = min_desired_x:step_size:max_desired_x;
y = (x>0 & x<=1) * 1 + ...
(x>1 & x<=3) * (2*x+1) + ...
(x>3 & x<=5) * -(2*x+1) + ...
(x>5 ) * 0;
plot(x,y)
1 Comment
Titus Edelhofer
on 25 Jun 2013
You will need to use
(x>0 & x<=1) .* 1
and likewise for the other terms. Note the ".*" instead of "*".
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