Error using plot Vectors must be the same length.

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Michael Darwish
Michael Darwish el 22 de Nov. de 2019
Comentada: Star Strider el 25 de Dic. de 2019
Hi everyone,
I am trying to convolve two step function signals for school assignment the two signals are:
x(t) = (-t+3)(u(t)-u(t-3))
h(t) = 2u(t+2)-u(t+1)
I wrote the code below, when I ran the code I keep getting the "Error using plot
Vectors must be the same length.".the vector generated by the conv command is longer than the t vector!
any help will be appreciated.
clear all
clc
dt=0.01; t= -7:dt:6;
x = 2*heaviside(t+2)-heaviside(t+1);
h =(-t+3).*heaviside(t)-(-t+3).*heaviside(t-3);
y= dt.* conv (x,h);
plot(t,y)
whos
Name Size Bytes Class Attributes
dt 1x1 8 double
h 1x1301 10408 double
t 1x1301 10408 double
x 1x1301 10408 double
y 1x2601 20808 double
these are the values in my work space.

Respuestas (1)

Star Strider
Star Strider el 22 de Nov. de 2019
To create ‘y’ to be the same length as ‘t’, use the 'same' shape argument in conv:
y= dt.* conv (x,h,'same');
  2 comentarios
Star Strider
Star Strider el 25 de Dic. de 2019
Michael Darwish’s Answer moved here —
Thank you for your answer.
Star Strider
Star Strider el 25 de Dic. de 2019
My pleasure.
If my Answer helped you solve your problem, please Accept it!

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