How do I write code to plot ramp function? Is there any command for ramp?

The discrete function I want to plot is g[n] = ramp[n + 2]− 2ramp[n]+ ramp[n − 2]

The interval is -5<=n<=10

Thanks in advance.

Answer 1

[the cyclist]

There is no ramp function in MATLAB, but it could easily be coded as

function r = ramp(x)
r = max(0,x)

[Ae lay]

Thanks for the reply. Then how to plot this equation g[n] = ramp[n + 2]− 2ramp[n]+ ramp[n − 2] ?

[Ae lay]

n   = -5:10;
p1  = ramp(n,1,-2); % for part 1
p2  = ramp(n,-2,0); % for part 2
p3  = ramp(n,1,2);  % for part 3
Gh  = p1+p2+p3;     % equation of RAMP= the summation of 3 parts
stem(n,Gh);

The above code doesn't work.

[the cyclist]

% Define the ramp function. See this page for details: http://www.mathworks.com/help/matlab/matlab_prog/anonymous-functions.html
ramp = @(x) max(0,x);

% Another anonymous function defining g(x) as the sum of ramp functions.
g = @(x)(ramp(x+2) + 2*ramp(x)+ ramp(x-2));

% Define the input variable
n = -5:1:10;

% Plot
figure
plot(n,g(n),'.-')

[Mohammad Shadman]

is this continous?

[the cyclist]

Do you mean is g a continuous function?

Yes, g is continuous for real x in (-Inf,Inf).

[Mohammad Shadman]

how will we plot for discreet?

[the cyclist]

Take a look at the MATLAB Plot Gallery for ideas (and code) on how to plot.

If that doesn't help, please use more than 8 words to fully describe what you are trying to do, so that people don't waste time guessing at what you want.

Answer 2

[ismael rashid]

clc

clear all

signal_start = input(' signal start value : ');

signal_end = input(' signal end value : ');

ramp_value = input(' ramp : ');

a = [ signal_start:signal_end];

b =mod(a,ramp_value);

plot(a,b)

% hope it helps you