Systems with memory-Function for

Hello

Excuse me, how can I enter the following function in matlab?

y[n]=x[n]+x[n-1]

I have the vector [1 0.5 0.75 0.5 1] that corresponds to each value of n evaluated.

n=0:5

My code is

clc
clear all
vec=[1 0.5 0.75 0.5 1 0];
for i=1:6
    n2= i-1;
    ynum= vec(i)+ vec(n2);
    y= ynum./2;
    hold on 
    stem (i,y)
end

and the error that matlab tells me is

Array indices must be positive integers or logical values.

Error in Memoriafunejemplo (line 8)

ynum= vec(i)+ vec(n2);

Thank you very much for your comments!

[Jeffrey Clark]

@Mechelle Zarahi Fuentes Perez, MATLAB indexs are 1 based so vec(n2) is invalid since n2 is zero the first time through your loop. You must decide how y(1) is to be defined.

[Mechelle Zarahi Fuentes Perez]

Thank you very much, that was my mistake!

Answer 1

[Walter Roberson]

vec=[1 0.5 0.75 0.5 1 0]

vec = 1×6

1.0000 0.5000 0.7500 0.5000 1.0000 0

vm = movmean(vec, 2)

vm = 1×6

1.0000 0.7500 0.6250 0.6250 0.7500 0.5000

plot([vec; vm].')